[INFO] fetching crate cargo-mutants 26.2.0...
[INFO] testing cargo-mutants-26.2.0 against beta-2026-03-05 for beta-1.95-1
[INFO] extracting crate cargo-mutants 26.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate cargo-mutants 26.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cargo-mutants 26.2.0
[INFO] tweaked toml for crates.io crate cargo-mutants 26.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-mutants 26.2.0 on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cargo-mutants 26.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d9c18a853d3d6850f8935e903e537db53b36aa6a0b9e8f338f017db62eea383
[INFO] running `Command { std: "docker" "start" "-a" "1d9c18a853d3d6850f8935e903e537db53b36aa6a0b9e8f338f017db62eea383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d9c18a853d3d6850f8935e903e537db53b36aa6a0b9e8f338f017db62eea383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d9c18a853d3d6850f8935e903e537db53b36aa6a0b9e8f338f017db62eea383", kill_on_drop: false }`
[INFO] [stdout] 1d9c18a853d3d6850f8935e903e537db53b36aa6a0b9e8f338f017db62eea383
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4906a75330f9a8c0babac7af2214817df83b285ca0b99a4940ee0f7a294de6de
[INFO] running `Command { std: "docker" "start" "-a" "4906a75330f9a8c0babac7af2214817df83b285ca0b99a4940ee0f7a294de6de", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling once_cell v1.20.3
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling rustix v0.37.28
[INFO] [stderr]    Compiling guppy-workspace-hack v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling nu-ansi-term v0.50.1
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling semver v1.0.25
[INFO] [stderr]    Compiling ref-cast v1.0.24
[INFO] [stderr]    Compiling target-spec v3.2.2
[INFO] [stderr]    Compiling nextest-workspace-hack v0.1.0
[INFO] [stderr]    Compiling thiserror v1.0.65
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling bstr v1.11.3
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling cfg-expr v0.17.2
[INFO] [stderr]    Compiling env_filter v0.1.3
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling env_logger v0.11.6
[INFO] [stderr]    Compiling dyn-clone v1.0.19
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling terminal_size v0.4.1
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling similar v2.1.0
[INFO] [stderr]    Compiling clap_builder v4.5.27
[INFO] [stderr]    Compiling path-slash v0.2.0
[INFO] [stderr]    Compiling mutants v0.0.3
[INFO] [stderr]    Compiling whoami v1.5.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling indoc v2.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling fs2 v0.4.0
[INFO] [stderr]    Compiling reflink v0.1.3
[INFO] [stderr]    Compiling jobserver v0.1.0
[INFO] [stderr]    Compiling tempfile v3.22.0
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling ctrlc v3.4.7
[INFO] [stderr]    Compiling terminal_size v0.2.6
[INFO] [stderr]    Compiling nutmeg v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling clap_derive v4.5.28
[INFO] [stderr]    Compiling ref-cast-impl v1.0.24
[INFO] [stderr]    Compiling thiserror-impl v1.0.65
[INFO] [stderr]    Compiling schemars_derive v0.9.0
[INFO] [stderr]    Compiling test-log-macros v0.2.17
[INFO] [stderr]    Compiling color-print-proc-macro v0.3.7
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling globset v0.4.16
[INFO] [stderr]    Compiling regex v1.10.0
[INFO] [stderr]    Compiling color-print v0.3.1
[INFO] [stderr]    Compiling console v0.15.0
[INFO] [stderr]    Compiling ignore v0.4.23
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling flickzeug v0.4.5
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling clap v4.5.28
[INFO] [stderr]    Compiling clap_complete v4.0.0
[INFO] [stderr]    Compiling strum v0.26.0
[INFO] [stderr]    Compiling test-log v0.2.16
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling serde_spanned v0.6.8
[INFO] [stderr]    Compiling smol_str v0.3.2
[INFO] [stderr]    Compiling cargo-platform v0.1.9
[INFO] [stderr]    Compiling jiff v0.1.29
[INFO] [stderr]    Compiling toml_edit v0.20.7
[INFO] [stderr]    Compiling schemars v0.9.0
[INFO] [stderr]    Compiling cargo_metadata v0.19.0
[INFO] [stderr]    Compiling nextest-metadata v0.12.1
[INFO] [stderr]    Compiling toml v0.8.0
[INFO] [stderr]    Compiling cargo-mutants v26.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 59.03s
[INFO] running `Command { std: "docker" "inspect" "4906a75330f9a8c0babac7af2214817df83b285ca0b99a4940ee0f7a294de6de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4906a75330f9a8c0babac7af2214817df83b285ca0b99a4940ee0f7a294de6de", kill_on_drop: false }`
[INFO] [stdout] 4906a75330f9a8c0babac7af2214817df83b285ca0b99a4940ee0f7a294de6de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7e5cc7acd678b0785c7b1228b8a6b891d44bcfc2c29852ca4e0748c6758f901
[INFO] running `Command { std: "docker" "start" "-a" "a7e5cc7acd678b0785c7b1228b8a6b891d44bcfc2c29852ca4e0748c6758f901", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling bstr v1.11.3
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling predicates-core v1.0.9
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling wait-timeout v0.2.1
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling similar v2.1.0
[INFO] [stderr]    Compiling termtree v0.5.1
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling assert_cmd v2.0.17
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling predicates-tree v1.0.12
[INFO] [stderr]    Compiling cp_r v0.5.2
[INFO] [stderr]    Compiling rusty-fork v0.3.1
[INFO] [stderr]    Compiling globset v0.4.16
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling ignore v0.4.23
[INFO] [stderr]    Compiling float-cmp v0.10.0
[INFO] [stderr]    Compiling predicates v3.1.3
[INFO] [stderr]    Compiling insta v1.12.0
[INFO] [stderr]    Compiling cargo-mutants v26.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 20.83s
[INFO] running `Command { std: "docker" "inspect" "a7e5cc7acd678b0785c7b1228b8a6b891d44bcfc2c29852ca4e0748c6758f901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7e5cc7acd678b0785c7b1228b8a6b891d44bcfc2c29852ca4e0748c6758f901", kill_on_drop: false }`
[INFO] [stdout] a7e5cc7acd678b0785c7b1228b8a6b891d44bcfc2c29852ca4e0748c6758f901
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4f4e64461a7225a716f1ef6d0f0d3cbe523c97ae7d620db2ac937aca2627af9a
[INFO] running `Command { std: "docker" "start" "-a" "4f4e64461a7225a716f1ef6d0f0d3cbe523c97ae7d620db2ac937aca2627af9a", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cargo_mutants-3718a9769b07e4fe)
[INFO] [stdout] 
[INFO] [stdout] running 242 tests
[INFO] [stdout] test annotation::tests::resolve_simple ... ok
[INFO] [stdout] test cargo::test::generate_cargo_args_with_additional_cargo_args_and_test_args ... ok
[INFO] [stdout] test cargo::test::generate_cargo_args_for_baseline_with_default_options ... ok
[INFO] [stdout] test cargo::test::all_features_args_passed_to_cargo ... ok
[INFO] [stdout] test cargo::test::profile_arg_passed_to_cargo ... ok
[INFO] [stdout] test cargo::test::nextest_gets_special_cargo_profile_option ... ok
[INFO] [stdout] test cargo::test::generate_cargo_args_with_additional_cargo_test_args_and_package ... ok
[INFO] [stdout] test cargo::test::rustflags_added_to_existing_rustflags ... ok
[INFO] [stdout] test annotation::tests::resolve_auto_not_on_github ... ok
[INFO] [stdout] test cargo::test::no_default_features_args_passed_to_cargo ... ok
[INFO] [stdout] test cargo::test::cap_lints_passed_to_cargo ... ok
[INFO] [stdout] test annotation::tests::resolve_auto_github_isolated ... ok
[INFO] [stdout] test console::test::format_duration_test ... ok
[INFO] [stdout] test cargo::test::rustflags_added_to_existing_encoded_rustflags ... ok
[INFO] [stdout] test copy_tree::test::copy_non_top_level_target_files ... ok
[INFO] [stdout] test cargo::test::rustflags_with_cap_lints_and_no_environment_variables ... ok
[INFO] [stdout] test cargo::test::rustflags_with_empty_encoded_rustflags ... ok
[INFO] [stdout] test cargo::test::feature_args_passed_to_cargo ... ok
[INFO] [stdout] test copy_tree::test::copy_with_gitignore_true_in_config_and_git_dir_excludes_ignored_files ... ok
[INFO] [stdout] test copy_tree::test::copy_without_gitignore ... ok
[INFO] [stdout] test copy_tree::test::dont_copy_git_dir_or_mutants_out_by_default ... ok
[INFO] [stdout] test fnvalue::test::box_unrecognized_type_replacement ... ok
[INFO] [stdout] test fnvalue::test::arc_replacement ... ok
[INFO] [stdout] test fnvalue::test::array_replacement ... ok
[INFO] [stdout] test fnvalue::test::box_usize_replacement ... ok
[INFO] [stdout] test fnvalue::test::btreeset_replacement ... ok
[INFO] [stdout] test fnvalue::test::btreemap_replacement ... ok
[INFO] [stdout] test copy_tree::test::copy_without_gitignore_by_default ... ok
[INFO] [stdout] test fnvalue::test::cow_generates_borrowed_and_owned ... ok
[INFO] [stdout] test cargo::test::rustflags_without_cap_lints_and_no_environment_variables ... ok
[INFO] [stdout] test fnvalue::test::float_replacement ... ok
[INFO] [stdout] test copy_tree::test::copy_target_dir_when_requested ... ok
[INFO] [stdout] test copy_tree::test::copy_tree_with_parent_ignoring_star ... ok
[INFO] [stdout] test copy_tree::test::copy_with_gitignore_but_without_git_dir ... ok
[INFO] [stdout] test copy_tree::test::copy_git_dir_when_requested ... ok
[INFO] [stdout] test fnvalue::test::http_response_replacement ... ok
[INFO] [stdout] test copy_tree::test::dont_copy_target_dir_by_default_when_copy_target_false ... ok
[INFO] [stdout] test fnvalue::test::match_known_collection ... ok
[INFO] [stdout] test fnvalue::test::match_known_map ... ok
[INFO] [stdout] test fnvalue::test::match_map ... ok
[INFO] [stdout] test fnvalue::test::nonzero_integer_replacements ... ok
[INFO] [stdout] test copy_tree::test::copy_with_gitignore_and_git_dir ... ok
[INFO] [stdout] test fnvalue::test::recurse_into_result_bool ... ok
[INFO] [stdout] test fnvalue::test::isize_replacements ... ok
[INFO] [stdout] test fnvalue::test::rc_replacement ... ok
[INFO] [stdout] test fnvalue::test::option_usize_replacement ... ok
[INFO] [stdout] test fnvalue::test::recurse_into_result_result_bool_with_error_values ... ok
[INFO] [stdout] test fnvalue::test::ref_mut ... ok
[INFO] [stdout] test fnvalue::test::impl_matches_iterator ... ok
[INFO] [stdout] test fnvalue::test::ref_replacement_leaks_values ... ok
[INFO] [stdout] test fnvalue::test::ref_replacement_recurses ... ok
[INFO] [stdout] test fnvalue::test::result_unit_replacement ... ok
[INFO] [stdout] test fnvalue::test::tuple_combinations ... ok
[INFO] [stdout] test fnvalue::test::slice_replacement ... ok
[INFO] [stdout] test fnvalue::test::u16_replacements ... ok
[INFO] [stdout] test fnvalue::test::unknown_container_replacement ... ok
[INFO] [stdout] test glob::test::empty_globs ... ok
[INFO] [stdout] test fnvalue::test::unit_replacement ... ok
[INFO] [stdout] test fnvalue::test::vec_string_replacement ... ok
[INFO] [stdout] test fnvalue::test::iter_replacement ... ok
[INFO] [stdout] test fnvalue::test::tuple_combination_longer ... ok
[INFO] [stdout] test glob::test::set_with_multiple_filenames ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_double_deletion ... ok
[INFO] [stdout] test in_diff::test_super::in_empty_diff_file ... ok
[INFO] [stdout] test in_diff::test_super::parse_diff_with_binary_files ... ok
[INFO] [stdout] test glob::test::glob_with_slashes_matches_whole_path ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_single_deletion ... ok
[INFO] [stdout] test glob::test::starstar_within_path_matches_zero_or_more_directories ... ok
[INFO] [stdout] test glob::test::glob_without_slash_matches_filename_anywhere ... ok
[INFO] [stdout] test glob::test::on_unix_backslash_is_escape ... ok
[INFO] [stdout] test in_diff::test_super::patch_parse_error ... ok
[INFO] [stdout] test annotation::tests::format_mutant_annotation ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_single_insertion ... ok
[INFO] [stdout] test in_diff::test_super::read_diff_with_empty_mutants ... ok
[INFO] [stdout] test in_diff::test_super::read_diff_with_no_sourcecode ... ok
[INFO] [stdout] test in_diff::test_super::parse_diff_with_only_moves ... ok
[INFO] [stdout] test in_diff::test_super::reconstruct_partial_new_file ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_replacement ... ok
[INFO] [stdout] test in_diff::test_super::strip_patch_path_prefix ... ok
[INFO] [stdout] test manifest::test::absolute_path_in_manifest_is_unchanged ... ok
[INFO] [stdout] test glob::test::starstar_at_start_of_path_matches_anywhere ... ok
[INFO] [stdout] test manifest::test::fix_path_relative ... ok
[INFO] [stdout] test manifest::test::fix_patch_section ... ok
[INFO] [stdout] test manifest::test::fix_path_absolute_unchanged ... ok
[INFO] [stdout] test manifest::test::fix_replace_section ... ok
[INFO] [stdout] test manifest::test::cargo_config_toml_paths_outside_tree_are_made_absolute ... ok
[INFO] [stdout] test manifest::test::subdir_path_in_manifest_is_unchanged ... ok
[INFO] [stdout] test mutant::test::squash_lines ... ok
[INFO] [stdout] test mutant::test::always_skip_constructors_called_new ... ok
[INFO] [stdout] test options::test::all_features_arg ... ok
[INFO] [stdout] test options::test::all_features_command_line_overrides_config ... ok
[INFO] [stdout] test glob::test::literal_filename_matches_anywhere ... ok
[INFO] [stdout] test manifest::test::fix_relative_path_in_manifest ... ok
[INFO] [stdout] test options::test::all_features_from_config ... ok
[INFO] [stdout] test options::test::cargo_test_arg_and_cargo_test_args_combined ... ok
[INFO] [stdout] test options::test::cargo_test_arg_cargo_test_args_and_config_combined ... ok
[INFO] [stdout] test options::test::cargo_test_arg_from_command_line ... ok
[INFO] [stdout] test options::test::arg_configure_skip_calls_default_off ... ok
[INFO] [stdout] test options::test::cargo_test_args_after_double_dash ... ok
[INFO] [stdout] test glob::test::filename_matches_directories_and_their_contents ... ok
[INFO] [stdout] test options::test::arg_overrides_config_skip_calls_defaults ... ok
[INFO] [stdout] test options::test::cli_timeout_multiplier_overrides_config ... ok
[INFO] [stdout] test options::test::config_skip_calls_default_off ... ok
[INFO] [stdout] test options::test::arg_redundantly_configure_skip_calls_default_on ... ok
[INFO] [stdout] test options::test::cargo_test_arg_and_config_combined ... ok
[INFO] [stdout] test options::test::copy_target_command_line_overrides_config ... ok
[INFO] [stdout] test options::test::conflicting_build_timeout_options ... ok
[INFO] [stdout] test options::test::cargo_test_arg_multiple_from_command_line ... ok
[INFO] [stdout] test options::test::copy_target_config_only ... ok
[INFO] [stdout] test options::test::copy_target_command_line_true_overrides_config ... ok
[INFO] [stdout] test options::test::default_jobserver_settings ... ok
[INFO] [stdout] test options::test::default_options ... ok
[INFO] [stdout] test options::test::copy_target_default_false ... ok
[INFO] [stdout] test options::test::copy_target_from_command_line ... ok
[INFO] [stdout] test options::single_threaded_tests::color_control_from_cargo_env ... ok
[INFO] [stdout] test mutant::test::mutate_factorial ... ok
[INFO] [stdout] test options::test::conflicting_timeout_options ... ok
[INFO] [stdout] test options::test::copy_target_from_config ... ok
[INFO] [stdout] test options::test::disable_jobserver ... ok
[INFO] [stdout] test options::test::features_from_config ... ok
[INFO] [stdout] test options::test::gitignore_false_in_config ... ok
[INFO] [stdout] test options::test::gitignore_command_line_overrides_config ... ok
[INFO] [stdout] test build_dir::test::for_baseline_in_place ... ok
[INFO] [stdout] test options::test::features_arg ... ok
[INFO] [stdout] test options::test::features_command_line_and_config_combined ... ok
[INFO] [stdout] test options::test::default_skip_calls_includes_with_capacity ... ok
[INFO] [stdout] test options::test::from_config ... ok
[INFO] [stdout] test options::test::no_copy_target_deprecated_option_still_works ... ok
[INFO] [stdout] test options::test::no_copy_target_sets_copy_target_false ... ok
[INFO] [stdout] test options::test::no_default_features_arg ... ok
[INFO] [stdout] test options::test::no_shuffle_option_is_accepted ... ok
[INFO] [stdout] test options::test::no_default_features_from_config ... ok
[INFO] [stdout] test options::test::no_shuffle_by_default ... ok
[INFO] [stdout] test options::test::gitignore_false_on_command_line ... ok
[INFO] [stdout] test options::test::no_default_features_command_line_overrides_config ... ok
[INFO] [stdout] test options::test::gitignore_off_by_default ... ok
[INFO] [stdout] test options::test::gitignore_true_in_config ... ok
[INFO] [stdout] test options::test::gitignore_true_on_command_line ... ok
[INFO] [stdout] test options::single_threaded_tests::color_control_from_env ... ok
[INFO] [stdout] test options::test::jobserver_tasks ... ok
[INFO] [stdout] test build_dir::test::build_dir_copy_from ... ok
[INFO] [stdout] test options::test::copy_vcs ... ok
[INFO] [stdout] test build_dir::test::build_dir_in_place ... ok
[INFO] [stdout] test options::test::profile_from_config ... ok
[INFO] [stdout] test options::test::profile_option_from_args ... ok
[INFO] [stdout] test options::test::options_from_baseline_arg ... ok
[INFO] [stdout] test options::test::options_from_test_tool_arg ... ok
[INFO] [stdout] test options::test::test_workspace_arg_false ... ok
[INFO] [stdout] test options::test::test_workspace_arg_false_allows_packages_from_config ... ok
[INFO] [stdout] test options::test::test_workspace_args_override_config_true ... ok
[INFO] [stdout] test options::test::test_workspace_config_false ... ok
[INFO] [stdout] test options::test::skip_calls_from_args_and_options ... ok
[INFO] [stdout] test outcome::test::find_phase_result ... ok
[INFO] [stdout] test output::test::clean_filename_removes_special_characters ... ok
[INFO] [stdout] test options::test::skip_calls_from_args ... ok
[INFO] [stdout] test options::test::test_workspace_args_override_config_false ... ok
[INFO] [stdout] test options::test::test_package_arg_with_commas ... ok
[INFO] [stdout] test options::test::options_from_timeout_args ... ok
[INFO] [stdout] test options::test::test_workspace_arg_true ... ok
[INFO] [stdout] test options::test::test_workspace_config_true ... ok
[INFO] [stdout] test options::test::shuffle_option_is_accepted ... ok
[INFO] [stdout] test options::test::sharding ... ok
[INFO] [stdout] test mutant::test::discover_factorial_mutants ... ok
[INFO] [stdout] test build_dir::test::for_baseline_copied ... ok
[INFO] [stdout] test path::test::path_slashes_drops_empty_parts ... ok
[INFO] [stdout] test pretty::test::preserve_boolean_or ... ok
[INFO] [stdout] test process::test::shell_quoting ... ok
[INFO] [stdout] test source::test::skips_files_outside_of_workspace ... ok
[INFO] [stdout] test shard::tests::shard_from_str_invalid_input ... ok
[INFO] [stdout] test shard::tests::shard_round_robin ... ok
[INFO] [stdout] test output::test::rotate ... ok
[INFO] [stdout] test source::test::source_file_normalizes_crlf ... ok
[INFO] [stdout] test span::test::empty_span_at_start_of_string ... ok
[INFO] [stdout] test span::test::empty_span_at_end_of_string ... ok
[INFO] [stdout] test pretty::test::pretty_format_examples ... ok
[INFO] [stdout] test span::test::cut_before_crlf ... ok
[INFO] [stdout] test span::test::cut_including_crlf ... ok
[INFO] [stdout] test span::test::span_ops ... ok
[INFO] [stdout] test span::test::span_debug_form ... ok
[INFO] [stdout] test pretty::test::format_thick_arrow ... ok
[INFO] [stdout] test pretty::test::format_trait_with_assoc_type ... ok
[INFO] [stdout] test output::test::track_previously_caught ... ok
[INFO] [stdout] test tail_file::test::last_line_of_file ... ok
[INFO] [stdout] test test::option_help_sentence_case_without_period ... ok
[INFO] [stdout] test shard::tests::shard_from_str_valid_input ... ok
[INFO] [stdout] test span::test::empty_span_in_empty_string ... ok
[INFO] [stdout] test timeouts::test::test_timeout_unaffected_by_in_place_build ... ok
[INFO] [stdout] test timeouts::test::build_timeout_from_option ... ok
[INFO] [stdout] test path::test::path_ascent ... ok
[INFO] [stdout] test timeouts::test::no_default_build_timeout ... ok
[INFO] [stdout] test timeouts::test::build_timeout_multiplier_default ... ok
[INFO] [stdout] test timeouts::test::build_timeout_multiplier_from_option ... ok
[INFO] [stdout] test timeouts::test::build_timeout_is_affected_by_in_place_build ... ok
[INFO] [stdout] test timeouts::test::timeout_from_option ... ok
[INFO] [stdout] test timeouts::test::build_timeout_multiplier_from_config ... ok
[INFO] [stdout] test span::test::linecolumn_debug_form ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_default ... ok
[INFO] [stdout] test pretty::test::pretty_match_guard ... ok
[INFO] [stdout] test visit::test::delete_struct_field_complex_values ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_default_with_baseline_skip ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_from_option ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_from_config ... ok
[INFO] [stdout] test visit::test::delete_struct_field_single_field_with_default ... ok
[INFO] [stdout] test visit::test::delete_struct_field_with_custom_default ... ok
[INFO] [stdout] test visit::test::delete_struct_field_with_default ... ok
[INFO] [stdout] test visit::test::find_path_attribute_on_module_item ... ok
[INFO] [stdout] test visit::test::mutants_from_test_str ... ok
[INFO] [stdout] test visit::test::no_mutants_equivalent_to_source ... ok
[INFO] [stdout] test output::test::create_output_dir ... ok
[INFO] [stdout] test visit::test::mutate_match_guard ... ok
[INFO] [stdout] test visit::test::find_path_attribute_matches_the_right_attribute ... ok
[INFO] [stdout] test visit::test::path_ends_with ... ok
[INFO] [stdout] test visit::test::reject_module_path_absolute ... ok
[INFO] [stdout] test visit::test::mutate_match_arms_with_fallback ... ok
[INFO] [stdout] test visit::test::skip_functions_with_sqlx_test_attribute ... ok
[INFO] [stdout] test visit::test::do_not_skip_functions_with_non_test_attributes ... ok
[INFO] [stdout] test visit::test::mutant_name_includes_type_parameters ... ok
[INFO] [stdout] test visit::test::skip_functions_with_tokio_test_attribute ... ok
[INFO] [stdout] test visit::test::skip_functions_with_test_attribute ... ok
[INFO] [stdout] test visit::test::skip_match_arms_without_fallback ... ok
[INFO] [stdout] test visit::test::mutate_vec_with_capacity_when_default_skips_are_turned_off ... ok
[INFO] [stdout] test visit::test::skip_unsafe_fn ... ok
[INFO] [stdout] test visit::test::skip_struct_without_default ... ok
[INFO] [stdout] test visit::test::skip_with_capacity_by_default ... ok
[INFO] [stdout] test visit::test::skip_named_fn ... ok
[INFO] [stdout] test visit::test::skip_functions_with_arbitrary_test_attribute ... ok
[INFO] [stdout] test visit::test::skip_method_calls_by_name ... ok
[INFO] [stdout] test visit::test::skip_removing_match_arm_with_guard ... ok
[INFO] [stdout] test visit::test::mutate_assign_ops ... ok
[INFO] [stdout] test visit::test::mutate_binops ... ok
[INFO] [stdout] test mutant::test::filter_by_attributes ... ok
[INFO] [stdout] test visit::test::mutate_comparisons ... ok
[INFO] [stdout] test workspace::test::package_filter_all_from_subdir_gets_everything ... ok
[INFO] [stdout] test workspace::test::open_subdirectory_of_crate_opens_the_crate ... ok
[INFO] [stdout] test workspace::test::error_opening_outside_of_crate ... ok
[INFO] [stdout] test visit::test::no_mutants_in_files_with_inner_cfg_test_attribute ... ok
[INFO] [stdout] test workspace::test::filter_by_multiple_packages ... ok
[INFO] [stdout] test workspace::test::find_root_from_subdirectory_of_workspace_finds_the_workspace_root ... ok
[INFO] [stdout] test workspace::test::find_top_source_files_from_subdirectory_of_workspace ... ok
[INFO] [stdout] test workspace::test::auto_packages_in_workspace_subdir_finds_single_package ... ok
[INFO] [stdout] test workspace::test::filter_by_single_package ... ok
[INFO] [stdout] test workspace::test::auto_packages_in_virtual_workspace_gets_everything ... ok
[INFO] [stderr]      Running tests/main.rs (/opt/rustwide/target/debug/deps/main-2a2eed0e22b50483)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 242 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.56s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 136 tests
[INFO] [stdout] test binary_git_diff_is_not_an_error_and_matches_nothing ... ok
[INFO] [stdout] test binary_diff_is_not_an_error_and_matches_nothing ... ok
[INFO] [stdout] test cargo_term_color_env_shows_colors ... ok
[INFO] [stdout] test already_failing_doctests_are_detected ... ok
[INFO] [stdout] test already_failing_tests_are_detected_before_running_mutants ... ok
[INFO] [stdout] test check_tree_where_build_fails ... ok
[INFO] [stdout] test clicolor_force_shows_in_stdout_and_trace ... ok
[INFO] [stdout] test check_succeeds_in_tree_that_builds_but_fails_tests ... ok
[INFO] [stdout] test completions_option_generates_something ... ok
[INFO] [stdout] test config_option_mutual_exclusion_with_no_config ... ok
[INFO] [stdout] test config_option_nonexistent_file ... ok
[INFO] [stdout] test config_option_reads_custom_file ... ok
[INFO] [stdout] test colors_always_shows_in_stdout_and_trace ... ok
[INFO] [stdout] test config_option_vs_default_behavior ... ok
[INFO] [stdout] test copy_testdata_doesnt_include_build_artifacts ... ok
[INFO] [stdout] test baseline_test_respects_package_options ... ok
[INFO] [stdout] test diff_containing_non_utf8_is_not_an_error ... ok
[INFO] [stdout] test already_failing_doctests_can_be_skipped_with_cargo_arg ... ok
[INFO] [stdout] test cdylib_tree_is_well_tested ... ok
[INFO] [stdout] test emit_config_schema ... ok
[INFO] [stdout] test diff_with_multiple_deletions_is_ok ... ok
[INFO] [stdout] test env_var_controls_trace ... ok
[INFO] [stdout] test empty_diff_is_not_an_error_and_matches_nothing ... ok
[INFO] [stdout] test example_config_file_can_be_loaded ... ok
[INFO] [stdout] test exclude_file_argument_overrides_config ... ok
[INFO] [stdout] test exclude_re_overrides_config ... ok
[INFO] [stdout] test additional_cargo_test_args ... FAILED
[INFO] [stdout] test cargo_test_arg_and_additional_cargo_test_args_combined ... FAILED
[INFO] [stdout] test cargo_mutants_in_replace_dependency_tree_passes ... FAILED
[INFO] [stdout] test additional_cargo_args ... FAILED
[INFO] [stdout] test cargo_test_arg_multiple_options ... FAILED
[INFO] [stdout] test all_features_config_option ... FAILED
[INFO] [stdout] test fail_when_error_value_does_not_parse ... ok
[INFO] [stdout] test file_argument_overrides_config_examine_globs_key ... ok
[INFO] [stdout] test cargo_mutants_in_override_dependency_tree_passes ... FAILED
[INFO] [stdout] test cargo_mutants_in_patch_dependency_tree_passes ... FAILED
[INFO] [stdout] test gitignore_respected_when_enabled ... ok
[INFO] [stdout] test cargo_test_arg_option ... FAILED
[INFO] [stdout] test in_workspace_only_default_members_are_mutated_if_present ... ok
[INFO] [stdout] test check_tree_with_mutants_skip ... FAILED
[INFO] [stdout] test incorrect_cargo_subcommand ... ok
[INFO] [stdout] test cargo_mutants_in_relative_dependency_tree_passes ... ok
[INFO] [stdout] test in_place_check_leaves_no_changes ... ok
[INFO] [stdout] test gitignore_can_be_turned_off ... ok
[INFO] [stdout] test invalid_cargo_term_color_rejected_with_message ... ok
[INFO] [stdout] test invalid_field_rejected ... ok
[INFO] [stdout] test gitignore_not_respected_by_default ... ok
[INFO] [stdout] test constfn_mutation_passes_check ... FAILED
[INFO] [stdout] test invalid_toml_rejected ... ok
[INFO] [stdout] test list_diff_json_contains_diffs ... ok
[INFO] [stdout] test list_files_as_json_in_workspace_subdir ... ok
[INFO] [stdout] test list_files_json_well_tested ... ok
[INFO] [stdout] test list_files_json_workspace ... ok
[INFO] [stdout] test list_files_respects_file_filters ... ok
[INFO] [stdout] test list_files_text_well_tested ... ok
[INFO] [stdout] test error_value_catches_untested_ok_case ... ok
[INFO] [stdout] test list_mutants_in_cfg_attr_mutants_skip ... ok
[INFO] [stdout] test interrupt_caught_and_kills_children ... ok
[INFO] [stdout] test list_mutants_in_cfg_attr_mutants_skip_json ... ok
[INFO] [stdout] test list_mutants_in_cfg_attr_test_skip ... ok
[INFO] [stdout] test list_mutants_in_cfg_attr_test_skip_json ... ok
[INFO] [stdout] test list_mutants_in_factorial ... ok
[INFO] [stdout] test list_mutants_in_factorial_json ... ok
[INFO] [stdout] test list_mutants_json_well_tested ... ok
[INFO] [stdout] test list_mutants_regex_anchored_matches_full_line ... ok
[INFO] [stdout] test list_mutants_regex_filters ... ok
[INFO] [stdout] test list_mutants_regex_filters_json ... ok
[INFO] [stdout] test list_mutants_well_tested_examine_and_exclude_name_filter_combined ... ok
[INFO] [stdout] test list_mutants_well_tested ... ok
[INFO] [stdout] test list_mutants_well_tested_examine_name_filter ... ok
[INFO] [stdout] test list_mutants_well_tested_exclude_folder_filter ... ok
[INFO] [stdout] test list_mutants_well_tested_exclude_name_filter ... ok
[INFO] [stdout] test list_mutants_well_tested_multiple_examine_and_exclude_name_filter_with_files_and_folders ... ok
[INFO] [stdout] test list_mutants_with_alternate_registry ... ok
[INFO] [stdout] test list_mutants_with_dir_option ... ok
[INFO] [stdout] test list_mutants_with_diffs_in_factorial ... ok
[INFO] [stdout] test list_mutants_with_error_value_from_command_line_list ... ok
[INFO] [stdout] test list_warns_about_unmatched_packages ... ok
[INFO] [stdout] test list_with_config_file_exclusion ... ok
[INFO] [stdout] test list_with_config_file_inclusion ... ok
[INFO] [stdout] test list_with_config_file_regexps ... ok
[INFO] [stdout] test features_config_option ... FAILED
[INFO] [stdout] test mismatched_diff_causes_error ... ok
[INFO] [stdout] test missing_cargo_subcommand ... ok
[INFO] [stdout] test hang_const_fn_is_unviable ... FAILED
[INFO] [stdout] test hang_avoided_by_build_timeout_with_cap_lints ... FAILED
[INFO] [stdout] test insta_test_failures_are_detected ... FAILED
[INFO] [stdout] test no_color_in_test_subprocesses_by_default ... ok
[INFO] [stdout] test no_mutants_in_tree_everything_skipped ... ok
[INFO] [stdout] test open_by_manifest_path ... ok
[INFO] [stdout] test option_in_place_of_cargo_subcommand ... ok
[INFO] [stdout] test minimum_test_timeout_from_env ... FAILED
[INFO] [stdout] test factorial_mutants_no_copy_target ... ok
[INFO] [stdout] test in_workspace_only_relevant_packages_included_in_baseline_tests_by_file_filter ... ok
[INFO] [stdout] test factorial_mutants_with_all_logs ... ok
[INFO] [stdout] test shard_divides_all_mutants ... ok
[INFO] [stdout] test show_help ... ok
[INFO] [stdout] test show_version ... ok
[INFO] [stdout] test factorial_mutants_with_all_logs_and_nocapture ... ok
[INFO] [stdout] test diff_trees_well_tested ... FAILED
[INFO] [stdout] test jobs_option_accepted_and_causes_multiple_threads ... ok
[INFO] [stdout] test list_mutants_changed_in_diff1 ... ok
[INFO] [stdout] test source_tree_parse_fails ... ok
[INFO] [stdout] test integration_test_source_is_not_mutated ... ok
[INFO] [stdout] test small_well_tested_mutants_with_cargo_arg_release ... ok
[INFO] [stdout] test source_tree_typecheck_fails ... ok
[INFO] [stdout] test log_file_names_are_short_and_dont_collide ... FAILED
[INFO] [stdout] test test_with_nextest_on_small_tree ... FAILED
[INFO] [stdout] test mutants_causing_tests_to_hang_are_stopped_by_manual_timeout ... FAILED
[INFO] [stdout] test output_option ... ok
[INFO] [stdout] test output_option_use_config ... ok
[INFO] [stdout] test output_option_use_env ... ok
[INFO] [stdout] test unexpected_nextest_error_code_causes_a_warning ... FAILED
[INFO] [stdout] test small_well_tested_tree_check_only_shuffled ... ok
[INFO] [stdout] test uses_cargo_env_var_to_run_cargo_so_invalid_value_fails ... ok
[INFO] [stdout] test small_well_tested_tree_check_only ... ok
[INFO] [stdout] test warn_if_error_value_starts_with_err ... ok
[INFO] [stdout] test warn_module_outside_of_tree ... ok
[INFO] [stdout] test warn_unresolved_module ... ok
[INFO] [stdout] test warning_when_no_mutants_found ... ok
[INFO] [stdout] test no_config_option_disables_config_file_so_error_value_is_not_generated ... ok
[INFO] [stdout] test proc_macro_tree_is_well_tested ... FAILED
[INFO] [stdout] test unviable_mutation_of_struct_with_no_default ... ok
[INFO] [stdout] test warn_about_too_many_jobs ... FAILED
[INFO] [stdout] test symlink_in_source_tree_is_copied ... ok
[INFO] [stdout] test small_well_tested_tree_is_clean ... ok
[INFO] [stdout] test test_small_well_tested_tree_with_baseline_skip ... ok
[INFO] [stdout] test strict_warnings_about_unused_variables_are_disabled_so_mutants_compile ... FAILED
[INFO] [stdout] test mutants_are_unapplied_after_testing_so_later_missed_mutants_are_found ... ok
[INFO] [stdout] test uncaught_mutant_in_factorial ... ok
[INFO] [stdout] test cross_package_tests ... ok
[INFO] [stdout] test timeout_when_unmutated_tree_test_hangs ... FAILED
[INFO] [stdout] test tree_fails_without_needed_feature ... FAILED
[INFO] [stdout] test tree_with_child_directories_is_well_tested ... FAILED
[INFO] [stdout] test iterate_retries_missed_mutants ... ok
[INFO] [stdout] test workspace_tree_is_well_tested ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- additional_cargo_test_args stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'additional_cargo_test_args' (323) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-JCJ76K"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 10s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-JCJ76K-Zbgjfj.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427efba6 - main::additional_cargo_test_args::h98f91741e55604f0
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3644:10
[INFO] [stdout]   25:     0x575b427efc07 - main::additional_cargo_test_args::{{closure}}::h90e034839aa564bd
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3632:32
[INFO] [stdout]   26:     0x575b42838e76 - core::ops::function::FnOnce::call_once::h01a8764592788a49
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- cargo_test_arg_and_additional_cargo_test_args_combined stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'cargo_test_arg_and_additional_cargo_test_args_combined' (336) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--cargo-test-arg=--all-features" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-HMs7EO"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 10s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-HMs7EO-viuGGG.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b4281e021 - main::cargo_test_arg_and_additional_cargo_test_args_combined::h7c03de29d4494286
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1239:10
[INFO] [stdout]   25:     0x575b4281e087 - main::cargo_test_arg_and_additional_cargo_test_args_combined::{{closure}}::h98a4d193132da6b4
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1227:60
[INFO] [stdout]   26:     0x575b428393f6 - core::ops::function::FnOnce::call_once::h2cb113b9b0ce0561
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- cargo_mutants_in_replace_dependency_tree_passes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'cargo_mutants_in_replace_dependency_tree_passes' (334) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--no-times" "--no-shuffle" "-d" "/tmp/.tmpS0v1ed/testdata/replace_dependency"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 5 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-replace-dependency@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-replace-dependency v0.0.0 (/tmp/cargo-mutants-replace_dependency-TrTJMg.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b42819331 - main::cargo_mutants_in_replace_dependency_tree_passes::h298990cd03b780b2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:955:10
[INFO] [stdout]   25:     0x575b428197d7 - main::cargo_mutants_in_replace_dependency_tree_passes::{{closure}}::hc6b5c8de9164a819
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:945:53
[INFO] [stdout]   26:     0x575b4283aa86 - core::ops::function::FnOnce::call_once::hbc27602f53dc1336
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- additional_cargo_args stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'additional_cargo_args' (322) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-fCpZwk"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0 --features needed
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-fCpZwk-Y2uO4U.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427e7696 - main::additional_cargo_args::h3f5ece9daefc8a9f
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3628:10
[INFO] [stdout]   25:     0x575b427e76f7 - main::additional_cargo_args::{{closure}}::hf03a09ab16a924ca
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3616:27
[INFO] [stdout]   26:     0x575b42839b06 - core::ops::function::FnOnce::call_once::h5fb39e1ed4a8619f
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- cargo_test_arg_multiple_options stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'cargo_test_arg_multiple_options' (337) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--cargo-test-arg=--all-features" "--cargo-test-arg=--no-fail-fast" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-jZoD3v"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-jZoD3v-ryEEr2.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b428025bd - main::cargo_test_arg_multiple_options::h63f435c1a251883a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1223:10
[INFO] [stdout]   25:     0x575b42802627 - main::cargo_test_arg_multiple_options::{{closure}}::h174527093b6fc257
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1212:37
[INFO] [stdout]   26:     0x575b42839bf6 - core::ops::function::FnOnce::call_once::h6885a4d2fc9a26a2
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- all_features_config_option stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'all_features_config_option' (324) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-UDCybF"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 10s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0 --all-features
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-UDCybF-2z3iY4.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427efd76 - main::all_features_config_option::h8c8a64060501131e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3676:10
[INFO] [stdout]   25:     0x575b427efdd7 - main::all_features_config_option::{{closure}}::h3198eacdc9f9a80a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3664:32
[INFO] [stdout]   26:     0x575b42839566 - core::ops::function::FnOnce::call_once::h3467ff7cd2a0c33b
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- cargo_mutants_in_override_dependency_tree_passes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'cargo_mutants_in_override_dependency_tree_passes' (331) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--no-times" "--no-shuffle" "-d" "/tmp/.tmpWqTqFO/testdata/override_dependency"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 5 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-override-dependency@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-override-dependency v0.0.0 (/tmp/cargo-mutants-override_dependency-TKyFh6.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b42819a01 - main::cargo_mutants_in_override_dependency_tree_passes::h83dbf06226fc328b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:918:10
[INFO] [stdout]   25:     0x575b42819ea7 - main::cargo_mutants_in_override_dependency_tree_passes::{{closure}}::hfb126dedc42fc12a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:908:54
[INFO] [stdout]   26:     0x575b4283a6d6 - core::ops::function::FnOnce::call_once::haa6beda68d1ec5ab
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- cargo_mutants_in_patch_dependency_tree_passes stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'cargo_mutants_in_patch_dependency_tree_passes' (332) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--no-times" "--no-shuffle" "-d" "/tmp/.tmpNHL96v/testdata/patch_dependency"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 5 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-patch-dependency@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-patch-dependency v0.0.0 (/tmp/cargo-mutants-patch_dependency-DxNEUP.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b4281602d - main::cargo_mutants_in_patch_dependency_tree_passes::he19d7aec6f305617
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:972:10
[INFO] [stdout]   25:     0x575b42816177 - main::cargo_mutants_in_patch_dependency_tree_passes::{{closure}}::h053e5e3d7d7b0ce6
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:963:51
[INFO] [stdout]   26:     0x575b428390f6 - core::ops::function::FnOnce::call_once::h16b092c96b2329e4
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- cargo_test_arg_option stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'cargo_test_arg_option' (436) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--cargo-test-arg=--all-features" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-iEVSJs"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-iEVSJs-kmzWHZ.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427e7862 - main::cargo_test_arg_option::hf7496c344f81d7f9
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1208:10
[INFO] [stdout]   25:     0x575b427e78c7 - main::cargo_test_arg_option::{{closure}}::h0842a8b8d9c67d90
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1202:27
[INFO] [stdout]   26:     0x575b4283a8c6 - core::ops::function::FnOnce::call_once::hb455cd002b8ed02a
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- check_tree_with_mutants_skip stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'check_tree_with_mutants_skip' (771) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo check failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-hang_avoided_by_attr-kOwWlv" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--check" "--no-times" "--no-shuffle"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 6 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo check --tests --verbose --package=cargo-mutants-testdata-hang-avoided-by-attr@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-hang-avoided-by-attr v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-hang_avoided_by_attr-kOwWlv-525rbZ.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo check failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427f3b9b - main::check_tree_with_mutants_skip::h4069da846fe1e812
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2598:10
[INFO] [stdout]   25:     0x575b427f4927 - main::check_tree_with_mutants_skip::{{closure}}::hba9da896fd13c6b4
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2590:34
[INFO] [stdout]   26:     0x575b4283a556 - core::ops::function::FnOnce::call_once::h9f57d44048a40bda
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- constfn_mutation_passes_check stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'constfn_mutation_passes_check' (1359) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected return code, failed var == 0
[INFO] [stdout] └── var: 4
[INFO] [stdout] 
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-hang_when_mutated-TDZc2T" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--check" "--build-timeout=10"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 7 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s check
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo check --tests --verbose --package=cargo-mutants-testdata-hang-when-mutated@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-hang-when-mutated v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-hang_when_mutated-TDZc2T-LpJY95.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo check failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b4287176e - assert_cmd::assert::Assert::code::h59011355f3e420b6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:266:29
[INFO] [stdout]   24:     0x575b427f726a - main::constfn_mutation_passes_check::h1fda8084849f53a8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:851:10
[INFO] [stdout]   25:     0x575b427f73e7 - main::constfn_mutation_passes_check::{{closure}}::hf2a7e2e15d8aed9e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:842:35
[INFO] [stdout]   26:     0x575b42838eb6 - core::ops::function::FnOnce::call_once::h0987c240f45c265f
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- features_config_option stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'features_config_option' (2244) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-S6SnKU"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 10s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0 --features=needed
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-S6SnKU-FzrmXV.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427e9726 - main::features_config_option::h0c3c051685a965b7
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3660:10
[INFO] [stdout]   25:     0x575b427e9787 - main::features_config_option::{{closure}}::he90a010eba3e2d0a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3648:28
[INFO] [stdout]   26:     0x575b4283acf6 - core::ops::function::FnOnce::call_once::hd4c0567744a96444
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- hang_const_fn_is_unviable stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'hang_const_fn_is_unviable' (2367) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected return code, failed var == 0
[INFO] [stdout] └── var: 4
[INFO] [stdout] 
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-hang_const-qaAJfm" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 1 mutant to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-hang-const@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-hang-const v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-hang_const-qaAJfm-kZEHry.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b4287176e - assert_cmd::assert::Assert::code::h59011355f3e420b6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:266:29
[INFO] [stdout]   24:     0x575b427eb24b - main::hang_const_fn_is_unviable::hcb5c5f661f8a0a6c
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:716:10
[INFO] [stdout]   25:     0x575b427ec477 - main::hang_const_fn_is_unviable::{{closure}}::hfba2050325e9e07b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:707:31
[INFO] [stdout]   26:     0x575b42839d36 - core::ops::function::FnOnce::call_once::h76cfd2c557f799ae
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- hang_avoided_by_build_timeout_with_cap_lints stdout ----
[INFO] [stdout] debug log:
[INFO] [stdout] ===
[INFO] [stdout]    0.196642087s DEBUG cargo_mutants::copy_tree: src/copy_tree.rs:108: walk_builder=WalkBuilder { paths: ["/tmp/cargo-mutants-testdata-hang_const-LWSWHw"], ig_builder: IgnoreBuilder { dir: "", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: "", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout]    0.197178797s DEBUG cargo_mutants::copy_tree: src/copy_tree.rs:48: Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout]    0.197632637s DEBUG cargo_mutants::copy_tree: src/copy_tree.rs:151: Copied source tree total_bytes=608 total_files=3 reflink_used=false temp_dir="/tmp/cargo-mutants-cargo-mutants-testdata-hang_const-LWSWHw-D3eYjm.tmp"
[INFO] [stdout]    0.198433907s DEBUG cargo_mutants::lab: src/lab.rs:56: starting jobserver n_tasks=16
[INFO] [stdout]    0.198653897s DEBUG cargo_mutants::lab: src/lab.rs:270: test_packages=Explicit([Package { name: "cargo-mutants-testdata-hang-const", version: "0.0.0", relative_dir: "", top_sources: ["src/lib.rs"] }])
[INFO] [stdout]    0.198762587s DEBUG run{phase=Build}: cargo_mutants::cargo: src/cargo.rs:55: encoded_rustflags="--cap-lints=warn\u{1f}--cap-lints=warn"
[INFO] [stdout]    0.198829137s DEBUG run{phase=Build}: cargo_mutants::process: src/process.rs:81: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-hang-const@0.0.0
[INFO] [stdout]   11.886571321s DEBUG run{phase=Build}: cargo_mutants::cargo: src/cargo.rs:68: process_status=Failure(101) elapsed=11.687837324s
[INFO] [stdout]   11.887543261s DEBUG cargo_mutants::lab: src/lab.rs:321: outcome=Failure
[INFO] [stdout]   11.887721341s ERROR cargo_mutants::lab: src/lab.rs:75: cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] 
[INFO] [stdout] ===
[INFO] [stdout] 
[INFO] [stdout] thread 'hang_avoided_by_build_timeout_with_cap_lints' (2344) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected return code, failed var == 3
[INFO] [stdout] └── var: 4
[INFO] [stdout] 
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-hang_const-LWSWHw" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--build-timeout=10" "--regex=const" "--cap-lints=true"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 1 mutant to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-hang-const@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-hang-const v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-hang_const-LWSWHw-D3eYjm.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b4287176e - assert_cmd::assert::Assert::code::h59011355f3e420b6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:266:29
[INFO] [stdout]   24:     0x575b42815890 - main::hang_avoided_by_build_timeout_with_cap_lints::h9e14f2456711bb40
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:832:9
[INFO] [stdout]   25:     0x575b42815ab7 - main::hang_avoided_by_build_timeout_with_cap_lints::{{closure}}::h81e0e49a80f66de6
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:819:50
[INFO] [stdout]   26:     0x575b42839846 - core::ops::function::FnOnce::call_once::h4c95399d88db62a6
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- insta_test_failures_are_detected stdout ----
[INFO] [stdout] INSTA_UPDATE=auto
[INFO] [stdout] 
[INFO] [stdout] thread 'insta_test_failures_are_detected' (2588) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=``````
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-insta-NqopwC\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: walk package manifest_path=/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: found mutation target src/lib.rs of kind [Lib]
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: skipping target \"insta\" of kinds [Test]
[INFO] [stdout] DEBUG Found packages packages=[Package { name: \"cargo-mutants-testdata-insta\", version: \"0.0.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }]
[INFO] [stdout] DEBUG No config found in workspace
[INFO] [stdout] DEBUG config=Config { additional_cargo_args: [], additional_cargo_test_args: [], all_features: None, build_timeout_multiplier: None, cap_lints: false, copy_vcs: None, copy_target: None, error_values: [], examine_globs: [], examine_re: [], exclude_globs: [], exclude_re: [], gitignore: None, features: [], minimum_test_timeout: None, no_default_features: None, output: None, profile: None, skip_calls: [], skip_calls_defaults: None, test_package: [], test_workspace: None, timeout_multiplier: None, common: Common { emit_diffs: None, test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG args.features=[]
[INFO] [stdout] DEBUG options=Options { annotations: None, baseline: Run, cap_lints: false, check_only: false, copy_vcs: false, gitignore: false, copy_target: false, in_place: false, jobserver: true, jobserver_tasks: None, leak_dirs: false, test_timeout: None, test_timeout_multiplier: None, test_package: Mutated, build_timeout: None, build_timeout_multiplier: None, minimum_test_timeout: 20s, print_caught: true, print_unviable: false, show_times: false, show_all_logs: false, show_line_col: true, shuffle: false, skip_calls: [\"with_capacity\"], profile: None, additional_cargo_args: [], additional_cargo_test_args: [], features: [], no_default_features: false, all_features: false, examine_globset: None, exclude_globset: None, examine_names: RegexSet([]), exclude_names: RegexSet([]), output_in_dir: None, jobs: None, error_values: [], colors: Auto, emit_json: false, common: Common { emit_diffs: Some(false), test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"
[INFO] [stdout] DEBUG Resolved auto package filter based on enclosing directory package=\"cargo-mutants-testdata-insta\" package_dir=\"/tmp/cargo-mutants-testdata-insta-NqopwC\"
[INFO] [stdout] TRACE source_file{path=\"src/lib.rs\"}: visit source file
[INFO] [stdout] TRACE source_file{path=\"src/lib.rs\"}:fn{line=1 name=\"say_hello\"}: visit fn
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/cargo-mutants-testdata-insta-NqopwC\"], ig_builder: IgnoreBuilder { dir: \"\", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: \"\", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout] DEBUG Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout] DEBUG Copied source tree total_bytes=739 total_files=4 reflink_used=false temp_dir=\"/tmp/cargo-mutants-cargo-mutants-testdata-insta-NqopwC-pFgL5E.tmp\"
[INFO] [stdout] DEBUG starting jobserver n_tasks=16
[INFO] [stdout] DEBUG test_packages=Explicit([Package { name: \"cargo-mutants-testdata-insta\", version: \"0.0.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }])
[INFO] [stdout] DEBUG run{phase=Build}: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-insta@0.0.0
[INFO] [stdout] DEBUG run{phase=Build}: process_status=Failure(101) elapsed=11.059200954s
[INFO] [stdout] DEBUG outcome=Failure
[INFO] [stdout] ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] ```
[INFO] [stdout] ```
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-insta-NqopwC" && INSTA_UPDATE="auto" "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--no-times" "--no-shuffle" "--caught" "-Ltrace"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 2 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-insta@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `insta` as a dependency of package `cargo-mutants-testdata-insta v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-insta-NqopwC-pFgL5E.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr=```
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-insta-NqopwC\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: walk package manifest_path=/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: found mutation target src/lib.rs of kind [Lib]
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: skipping target \"insta\" of kinds [Test]
[INFO] [stdout] DEBUG Found packages packages=[Package { name: \"cargo-mutants-testdata-insta\", version: \"0.0.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }]
[INFO] [stdout] DEBUG No config found in workspace
[INFO] [stdout] DEBUG config=Config { additional_cargo_args: [], additional_cargo_test_args: [], all_features: None, build_timeout_multiplier: None, cap_lints: false, copy_vcs: None, copy_target: None, error_values: [], examine_globs: [], examine_re: [], exclude_globs: [], exclude_re: [], gitignore: None, features: [], minimum_test_timeout: None, no_default_features: None, output: None, profile: None, skip_calls: [], skip_calls_defaults: None, test_package: [], test_workspace: None, timeout_multiplier: None, common: Common { emit_diffs: None, test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG args.features=[]
[INFO] [stdout] DEBUG options=Options { annotations: None, baseline: Run, cap_lints: false, check_only: false, copy_vcs: false, gitignore: false, copy_target: false, in_place: false, jobserver: true, jobserver_tasks: None, leak_dirs: false, test_timeout: None, test_timeout_multiplier: None, test_package: Mutated, build_timeout: None, build_timeout_multiplier: None, minimum_test_timeout: 20s, print_caught: true, print_unviable: false, show_times: false, show_all_logs: false, show_line_col: true, shuffle: false, skip_calls: [\"with_capacity\"], profile: None, additional_cargo_args: [], additional_cargo_test_args: [], features: [], no_default_features: false, all_features: false, examine_globset: None, exclude_globset: None, examine_names: RegexSet([]), exclude_names: RegexSet([]), output_in_dir: None, jobs: None, error_values: [], colors: Auto, emit_json: false, common: Common { emit_diffs: Some(false), test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-NqopwC/Cargo.toml\"
[INFO] [stdout] DEBUG Resolved auto package filter based on enclosing directory package=\"cargo-mutants-testdata-insta\" package_dir=\"/tmp/cargo-mutants-testdata-insta-NqopwC\"
[INFO] [stdout] TRACE source_file{path=\"src/lib.rs\"}: visit source file
[INFO] [stdout] TRACE source_file{path=\"src/lib.rs\"}:fn{line=1 name=\"say_hello\"}: visit fn
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/cargo-mutants-testdata-insta-NqopwC\"], ig_builder: IgnoreBuilder { dir: \"\", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: \"\", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout] DEBUG Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout] DEBUG Copied source tree total_bytes=739 total_files=4 reflink_used=false temp_dir=\"/tmp/cargo-mutants-cargo-mutants-testdata-insta-NqopwC-pFgL5E.tmp\"
[INFO] [stdout] DEBUG starting jobserver n_tasks=16
[INFO] [stdout] DEBUG test_packages=Explicit([Package { name: \"cargo-mutants-testdata-insta\", version: \"0.0.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }])
[INFO] [stdout] DEBUG run{phase=Build}: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-insta@0.0.0
[INFO] [stdout] DEBUG run{phase=Build}: process_status=Failure(101) elapsed=11.059200954s
[INFO] [stdout] DEBUG outcome=Failure
[INFO] [stdout] ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b428077cc - main::insta_test_failures_are_detected::hc96a7f255e116627
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1961:14
[INFO] [stdout]   25:     0x575b42807837 - main::insta_test_failures_are_detected::{{closure}}::h96dccff131e5f64b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1951:38
[INFO] [stdout]   26:     0x575b4283ae26 - core::ops::function::FnOnce::call_once::hd80b5a9e46484ed9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- minimum_test_timeout_from_env stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'minimum_test_timeout_from_env' (4073) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo test failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-small_well_tested-6QWgmn" && CARGO_MUTANTS_MINIMUM_TEST_TIMEOUT="1234" "/opt/rustwide/target/debug/cargo-mutants" "mutants"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=<151 lines total>
[INFO] [stdout] ```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 1s build + 1s test
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-small-well-tested@0.0.0
[INFO] [stdout]     Blocking waiting for file lock on artifact directory
[INFO] [stdout]        Fresh cargo-mutants-testdata-small-well-tested v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-small_well_tested-6QWgmn-WTbUj2.tmp)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/lib.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn factorial(n: u32) -> u32 {
[INFO] [stdout]   |                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] warning: `cargo-mutants-testdata-small-well-tested` (lib test) generated 1 warning (run `cargo fix --lib -p cargo-mutants-testdata-small-well-tested --tests` to apply 1 suggestion)
[INFO] [stdout]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.35s
[INFO] [stdout]   Executable `/opt/rustwide/target/debug/deps/cargo_mutants_testdata_small_well_tested-ce43eef85717d7ce`
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] <91 lines omitted>
[INFO] [stdout] ```
[INFO] [stdout]   31:     0x5bd1ab20f46b - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5bd1ab20f46b - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5bd1ab20ab84 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5bd1ab20ab84 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x5bd1ab212072 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x5bd1ab212072 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x5bd1ab212072 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x5bd1ab212072 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x5bd1ab212072 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5bd1ab212072 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x5bd1ab212072 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5bd1ab278cdf - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   43:     0x5bd1ab278cdf - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x739d8353eaa4 - <unknown>
[INFO] [stdout]   45:     0x739d835cba64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test::test_factorial
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] error: test failed, to rerun pass `-p cargo-mutants-testdata-small-well-tested --lib`
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo test failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427f97c3 - main::minimum_test_timeout_from_env::h6c380f81e91f9a04
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:675:10
[INFO] [stdout]   25:     0x575b427f98b7 - main::minimum_test_timeout_from_env::{{closure}}::h41c7f258219eeed8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:667:35
[INFO] [stdout]   26:     0x575b4283afe6 - core::ops::function::FnOnce::call_once::he50cd94c9b766633
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- diff_trees_well_tested stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'diff_trees_well_tested' (1755) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=2
[INFO] [stdout] stderr=```" INFO Auto-set test timeout to 20s\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-diff1-8QRKkx"`
[INFO] [stdout] code=2
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] ok       Unmutated baseline in 1s build + 0s test
[INFO] [stdout] MISSED   src/lib.rs:6:5: replace two -> String with String::new() in 2s build + 2s test
[INFO] [stdout] 4 mutants tested in 14s: 1 missed, 3 caught
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr=" INFO Auto-set test timeout to 20s\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427e92e9 - main::diff_trees_well_tested::hf498c330fb9a4837
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1973:14
[INFO] [stdout]   25:     0x575b427e9347 - main::diff_trees_well_tested::{{closure}}::h09965f1f97bcb602
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1966:28
[INFO] [stdout]   26:     0x575b42839136 - core::ops::function::FnOnce::call_once::h179aa18932b5eb9d
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- log_file_names_are_short_and_dont_collide stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'log_file_names_are_short_and_dont_collide' (4042) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo check failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-well_tested-qKrJcm" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--check" "-v" "-V"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 96 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s check
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo check --tests --verbose --package=cargo-mutants-testdata-well-tested@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-well-tested v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-well_tested-qKrJcm-h2dwW4.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo check failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b42811533 - main::log_file_names_are_short_and_dont_collide::hf9d6fa26a89ee72d
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:865:10
[INFO] [stdout]   25:     0x575b42811e77 - main::log_file_names_are_short_and_dont_collide::{{closure}}::h9e54b1c8b0943c29
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:856:47
[INFO] [stdout]   26:     0x575b4283b376 - core::ops::function::FnOnce::call_once::hf54dc82e1a2f6e56
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- test_with_nextest_on_small_tree stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_with_nextest_on_small_tree' (5834) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected stdout, failed ((var.contains(4 mutants tested) && var.contains(Found 4 mutants to test)) && var.contains(4 caught))
[INFO] [stdout] ├── var as str: Found 4 mutants to test
[INFO] [stdout] │   FAILED   Unmutated baseline in 0s build
[INFO] [stdout] │   
[INFO] [stdout] │   *** baseline
[INFO] [stdout] │   
[INFO] [stdout] │   *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo nextest run --no-run --verbose --package=cargo-mutants-testdata-small-well-tested@0.0.0
[INFO] [stdout] │   error: no such command: `nextest`
[INFO] [stdout] │   
[INFO] [stdout] │   help: a command with a similar name exists: `test`
[INFO] [stdout] │   
[INFO] [stdout] │   help: view all installed commands with `cargo --list`
[INFO] [stdout] │   help: find a package to install `nextest` with `cargo search cargo-nextest`
[INFO] [stdout] │   
[INFO] [stdout] │   *** result: Failure(101)
[INFO] [stdout] │   
[INFO] [stdout] └── (var.contains(4 mutants tested) && var.contains(Found 4 mutants to test))
[INFO] [stdout]     └── var.contains(4 mutants tested)
[INFO] [stdout]         └── var: Found 4 mutants to test
[INFO] [stdout]             FAILED   Unmutated baseline in 0s build
[INFO] [stdout]             
[INFO] [stdout]             *** baseline
[INFO] [stdout]             
[INFO] [stdout]             *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo nextest run --no-run --verbose --package=cargo-mutants-testdata-small-well-tested@0.0.0
[INFO] [stdout]             error: no such command: `nextest`
[INFO] [stdout]             
[INFO] [stdout]             help: a command with a similar name exists: `test`
[INFO] [stdout]             
[INFO] [stdout]             help: view all installed commands with `cargo --list`
[INFO] [stdout]             help: find a package to install `nextest` with `cargo search cargo-nextest`
[INFO] [stdout]             
[INFO] [stdout]             *** result: Failure(101)
[INFO] [stdout]             
[INFO] [stdout] 
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--test-tool" "nextest" "-vV" "--no-shuffle" "-d" "/tmp/cargo-mutants-testdata-small_well_tested-mJYfEk"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 0s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo nextest run --no-run --verbose --package=cargo-mutants-testdata-small-well-tested@0.0.0
[INFO] [stdout] error: no such command: `nextest`
[INFO] [stdout] 
[INFO] [stdout] help: a command with a similar name exists: `test`
[INFO] [stdout] 
[INFO] [stdout] help: view all installed commands with `cargo --list`
[INFO] [stdout] help: find a package to install `nextest` with `cargo search cargo-nextest`
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b42872493 - assert_cmd::assert::Assert::stdout::h7e11981d5eb4df84
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:364:31
[INFO] [stdout]   24:     0x575b4280590e - main::test_with_nextest_on_small_tree::h52240001cbe3e58f
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1265:10
[INFO] [stdout]   25:     0x575b42805b07 - main::test_with_nextest_on_small_tree::{{closure}}::hcb6eb68d004eb80d
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1257:37
[INFO] [stdout]   26:     0x575b4283aac6 - core::ops::function::FnOnce::call_once::hbd49c3dc54774d02
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- mutants_causing_tests_to_hang_are_stopped_by_manual_timeout stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'mutants_causing_tests_to_hang_are_stopped_by_manual_timeout' (4270) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected return code, failed var == 3
[INFO] [stdout] └── var: 4
[INFO] [stdout] 
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-hang_when_mutated-0HreD6" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants" "-t" "8.1" "--build-timeout=15.5"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 7 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 10s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-hang-when-mutated@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-hang-when-mutated v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-hang_when_mutated-0HreD6-saP3up.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b4287176e - assert_cmd::assert::Assert::code::h59011355f3e420b6
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:266:29
[INFO] [stdout]   24:     0x575b4281ee3e - main::mutants_causing_tests_to_hang_are_stopped_by_manual_timeout::h02cfb0a5482fb301
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:783:10
[INFO] [stdout]   25:     0x575b4281f857 - main::mutants_causing_tests_to_hang_are_stopped_by_manual_timeout::{{closure}}::h7a93ba666fa46f73
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:773:65
[INFO] [stdout]   26:     0x575b428399c6 - core::ops::function::FnOnce::call_once::h55921944e111a337
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- unexpected_nextest_error_code_causes_a_warning stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'unexpected_nextest_error_code_causes_a_warning' (6064) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected stderr, failed var.contains(nextest process exited with unexpected code (allowed: [4, 100, 101]) code=92)
[INFO] [stdout] ├── var: DEBUG cargo locate-project output: {"root":"/tmp/.tmpfv3CdX/Cargo.toml"}
[INFO] [stdout] │   DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpfv3CdX/Cargo.toml"
[INFO] [stdout] │   DEBUG Find workspace metadata manifest_path="/tmp/.tmpfv3CdX/Cargo.toml"
[INFO] [stdout] │   DEBUG Found workspace root workspace_root="/tmp/.tmpfv3CdX"
[INFO] [stdout] │   DEBUG package{name=cargo-mutants-test}: walk package manifest_path=/tmp/.tmpfv3CdX/Cargo.toml
[INFO] [stdout] │   DEBUG package{name=cargo-mutants-test}: found mutation target src/main.rs of kind [Bin]
[INFO] [stdout] │   DEBUG Found packages packages=[Package { name: "cargo-mutants-test", version: "0.1.0", relative_dir: "", top_sources: ["src/main.rs"] }]
[INFO] [stdout] │   DEBUG No config found in workspace
[INFO] [stdout] │   DEBUG config=Config { additional_cargo_args: [], additional_cargo_test_args: [], all_features: None, build_timeout_multiplier: None, cap_lints: false, copy_vcs: None, copy_target: None, error_values: [], examine_globs: [], examine_re: [], exclude_globs: [], exclude_re: [], gitignore: None, features: [], minimum_test_timeout: None, no_default_features: None, output: None, profile: None, skip_calls: [], skip_calls_defaults: None, test_package: [], test_workspace: None, timeout_multiplier: None, common: Common { emit_diffs: None, test_tool: None, sharding: None } }
[INFO] [stdout] │   DEBUG args.features=[]
[INFO] [stdout] │   DEBUG options=Options { annotations: None, baseline: Run, cap_lints: false, check_only: false, copy_vcs: false, gitignore: false, copy_target: false, in_place: false, jobserver: true, jobserver_tasks: None, leak_dirs: false, test_timeout: None, test_timeout_multiplier: None, test_package: Mutated, build_timeout: None, build_timeout_multiplier: None, minimum_test_timeout: 20s, print_caught: true, print_unviable: true, show_times: true, show_all_logs: false, show_line_col: true, shuffle: false, skip_calls: ["with_capacity"], profile: None, additional_cargo_args: [], additional_cargo_test_args: [], features: [], no_default_features: false, all_features: false, examine_globset: None, exclude_globset: None, examine_names: RegexSet([]), exclude_names: RegexSet([]), output_in_dir: None, jobs: None, error_values: [], colors: Auto, emit_json: false, common: Common { emit_diffs: Some(false), test_tool: Some(Nextest), sharding: None } }
[INFO] [stdout] │   DEBUG cargo locate-project output: {"root":"/tmp/.tmpfv3CdX/Cargo.toml"}
[INFO] [stdout] │   DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpfv3CdX/Cargo.toml"
[INFO] [stdout] │   DEBUG Resolved auto package filter based on enclosing directory package="cargo-mutants-test" package_dir="/tmp/.tmpfv3CdX"
[INFO] [stdout] │   DEBUG walk_builder=WalkBuilder { paths: ["/tmp/.tmpfv3CdX"], ig_builder: IgnoreBuilder { dir: "", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: "", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout] │   DEBUG Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout] │   DEBUG Copied source tree total_bytes=215 total_files=3 reflink_used=false temp_dir="/tmp/cargo-mutants-.tmpfv3CdX-mEF1CS.tmp"
[INFO] [stdout] │   DEBUG starting jobserver n_tasks=16
[INFO] [stdout] │   DEBUG test_packages=Explicit([Package { name: "cargo-mutants-test", version: "0.1.0", relative_dir: "", top_sources: ["src/main.rs"] }])
[INFO] [stdout] │   DEBUG run{phase=Build}: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo nextest run --no-run --verbose --package=cargo-mutants-test@0.1.0
[INFO] [stdout] │   DEBUG run{phase=Build}: process_status=Failure(101) elapsed=51.211829ms
[INFO] [stdout] │   DEBUG outcome=Failure
[INFO] [stdout] │   ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] └── var as str: DEBUG cargo locate-project output: {"root":"/tmp/.tmpfv3CdX/Cargo.toml"}
[INFO] [stdout]     DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpfv3CdX/Cargo.toml"
[INFO] [stdout]     DEBUG Find workspace metadata manifest_path="/tmp/.tmpfv3CdX/Cargo.toml"
[INFO] [stdout]     DEBUG Found workspace root workspace_root="/tmp/.tmpfv3CdX"
[INFO] [stdout]     DEBUG package{name=cargo-mutants-test}: walk package manifest_path=/tmp/.tmpfv3CdX/Cargo.toml
[INFO] [stdout]     DEBUG package{name=cargo-mutants-test}: found mutation target src/main.rs of kind [Bin]
[INFO] [stdout]     DEBUG Found packages packages=[Package { name: "cargo-mutants-test", version: "0.1.0", relative_dir: "", top_sources: ["src/main.rs"] }]
[INFO] [stdout]     DEBUG No config found in workspace
[INFO] [stdout]     DEBUG config=Config { additional_cargo_args: [], additional_cargo_test_args: [], all_features: None, build_timeout_multiplier: None, cap_lints: false, copy_vcs: None, copy_target: None, error_values: [], examine_globs: [], examine_re: [], exclude_globs: [], exclude_re: [], gitignore: None, features: [], minimum_test_timeout: None, no_default_features: None, output: None, profile: None, skip_calls: [], skip_calls_defaults: None, test_package: [], test_workspace: None, timeout_multiplier: None, common: Common { emit_diffs: None, test_tool: None, sharding: None } }
[INFO] [stdout]     DEBUG args.features=[]
[INFO] [stdout]     DEBUG options=Options { annotations: None, baseline: Run, cap_lints: false, check_only: false, copy_vcs: false, gitignore: false, copy_target: false, in_place: false, jobserver: true, jobserver_tasks: None, leak_dirs: false, test_timeout: None, test_timeout_multiplier: None, test_package: Mutated, build_timeout: None, build_timeout_multiplier: None, minimum_test_timeout: 20s, print_caught: true, print_unviable: true, show_times: true, show_all_logs: false, show_line_col: true, shuffle: false, skip_calls: ["with_capacity"], profile: None, additional_cargo_args: [], additional_cargo_test_args: [], features: [], no_default_features: false, all_features: false, examine_globset: None, exclude_globset: None, examine_names: RegexSet([]), exclude_names: RegexSet([]), output_in_dir: None, jobs: None, error_values: [], colors: Auto, emit_json: false, common: Common { emit_diffs: Some(false), test_tool: Some(Nextest), sharding: None } }
[INFO] [stdout]     DEBUG cargo locate-project output: {"root":"/tmp/.tmpfv3CdX/Cargo.toml"}
[INFO] [stdout]     DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpfv3CdX/Cargo.toml"
[INFO] [stdout]     DEBUG Resolved auto package filter based on enclosing directory package="cargo-mutants-test" package_dir="/tmp/.tmpfv3CdX"
[INFO] [stdout]     DEBUG walk_builder=WalkBuilder { paths: ["/tmp/.tmpfv3CdX"], ig_builder: IgnoreBuilder { dir: "", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: "", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout]     DEBUG Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout]     DEBUG Copied source tree total_bytes=215 total_files=3 reflink_used=false temp_dir="/tmp/cargo-mutants-.tmpfv3CdX-mEF1CS.tmp"
[INFO] [stdout]     DEBUG starting jobserver n_tasks=16
[INFO] [stdout]     DEBUG test_packages=Explicit([Package { name: "cargo-mutants-test", version: "0.1.0", relative_dir: "", top_sources: ["src/main.rs"] }])
[INFO] [stdout]     DEBUG run{phase=Build}: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo nextest run --no-run --verbose --package=cargo-mutants-test@0.1.0
[INFO] [stdout]     DEBUG run{phase=Build}: process_status=Failure(101) elapsed=51.211829ms
[INFO] [stdout]     DEBUG outcome=Failure
[INFO] [stdout]     ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] 
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "--test-tool" "nextest" "-vV" "--no-shuffle" "-Ldebug" "-d" "/tmp/.tmpfv3CdX"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 1 mutant to test
[INFO] [stdout] FAILED   Unmutated baseline in 0s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo nextest run --no-run --verbose --package=cargo-mutants-test@0.1.0
[INFO] [stdout] error: no such command: `nextest`
[INFO] [stdout] 
[INFO] [stdout] help: a command with a similar name exists: `test`
[INFO] [stdout] 
[INFO] [stdout] help: view all installed commands with `cargo --list`
[INFO] [stdout] help: find a package to install `nextest` with `cargo search cargo-nextest`
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr=```
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/.tmpfv3CdX/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/.tmpfv3CdX/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/.tmpfv3CdX/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/.tmpfv3CdX\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-test}: walk package manifest_path=/tmp/.tmpfv3CdX/Cargo.toml
[INFO] [stdout] DEBUG package{name=cargo-mutants-test}: found mutation target src/main.rs of kind [Bin]
[INFO] [stdout] DEBUG Found packages packages=[Package { name: \"cargo-mutants-test\", version: \"0.1.0\", relative_dir: \"\", top_sources: [\"src/main.rs\"] }]
[INFO] [stdout] DEBUG No config found in workspace
[INFO] [stdout] DEBUG config=Config { additional_cargo_args: [], additional_cargo_test_args: [], all_features: None, build_timeout_multiplier: None, cap_lints: false, copy_vcs: None, copy_target: None, error_values: [], examine_globs: [], examine_re: [], exclude_globs: [], exclude_re: [], gitignore: None, features: [], minimum_test_timeout: None, no_default_features: None, output: None, profile: None, skip_calls: [], skip_calls_defaults: None, test_package: [], test_workspace: None, timeout_multiplier: None, common: Common { emit_diffs: None, test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG args.features=[]
[INFO] [stdout] DEBUG options=Options { annotations: None, baseline: Run, cap_lints: false, check_only: false, copy_vcs: false, gitignore: false, copy_target: false, in_place: false, jobserver: true, jobserver_tasks: None, leak_dirs: false, test_timeout: None, test_timeout_multiplier: None, test_package: Mutated, build_timeout: None, build_timeout_multiplier: None, minimum_test_timeout: 20s, print_caught: true, print_unviable: true, show_times: true, show_all_logs: false, show_line_col: true, shuffle: false, skip_calls: [\"with_capacity\"], profile: None, additional_cargo_args: [], additional_cargo_test_args: [], features: [], no_default_features: false, all_features: false, examine_globset: None, exclude_globset: None, examine_names: RegexSet([]), exclude_names: RegexSet([]), output_in_dir: None, jobs: None, error_values: [], colors: Auto, emit_json: false, common: Common { emit_diffs: Some(false), test_tool: Some(Nextest), sharding: None } }
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/.tmpfv3CdX/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/.tmpfv3CdX/Cargo.toml\"
[INFO] [stdout] DEBUG Resolved auto package filter based on enclosing directory package=\"cargo-mutants-test\" package_dir=\"/tmp/.tmpfv3CdX\"
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/.tmpfv3CdX\"], ig_builder: IgnoreBuilder { dir: \"\", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: \"\", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout] DEBUG Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout] DEBUG Copied source tree total_bytes=215 total_files=3 reflink_used=false temp_dir=\"/tmp/cargo-mutants-.tmpfv3CdX-mEF1CS.tmp\"
[INFO] [stdout] DEBUG starting jobserver n_tasks=16
[INFO] [stdout] DEBUG test_packages=Explicit([Package { name: \"cargo-mutants-test\", version: \"0.1.0\", relative_dir: \"\", top_sources: [\"src/main.rs\"] }])
[INFO] [stdout] DEBUG run{phase=Build}: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo nextest run --no-run --verbose --package=cargo-mutants-test@0.1.0
[INFO] [stdout] DEBUG run{phase=Build}: process_status=Failure(101) elapsed=51.211829ms
[INFO] [stdout] DEBUG outcome=Failure
[INFO] [stdout] ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b42871ac4 - assert_cmd::assert::Assert::stderr::h80cd1c5180facaa5
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:460:31
[INFO] [stdout]   24:     0x575b4281891d - main::unexpected_nextest_error_code_causes_a_warning::h65699d77ca8d4367
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1317:10
[INFO] [stdout]   25:     0x575b42818bf7 - main::unexpected_nextest_error_code_causes_a_warning::{{closure}}::h89d8fd7fd7d01665
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1278:52
[INFO] [stdout]   26:     0x575b4283ae66 - core::ops::function::FnOnce::call_once::hdca63f24e8270ae3
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- proc_macro_tree_is_well_tested stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'proc_macro_tree_is_well_tested' (4697) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-proc_macro-shhcUg" && "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--no-times" "--no-shuffle" "-v" "-V"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 2 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-proc-macro@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `quote` as a dependency of package `cargo-mutants-testdata-proc-macro v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-proc_macro-shhcUg-KhabdQ.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b42802344 - main::proc_macro_tree_is_well_tested::hbead9e36c59db30d
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:316:10
[INFO] [stdout]   25:     0x575b42802437 - main::proc_macro_tree_is_well_tested::{{closure}}::h8571437247488530
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:309:36
[INFO] [stdout]   26:     0x575b42839786 - core::ops::function::FnOnce::call_once::h4932700b993bf4a6
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- warn_about_too_many_jobs stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'warn_about_too_many_jobs' (6219) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=``````
[INFO] [stdout]  WARN --jobs=40 is probably too high and may overload your machine: each job runs a separate `cargo` process, and cargo may internally start many threads and subprocesses; values <= 8 are usually safe
[INFO] [stdout] ERROR cargo test failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] ```
[INFO] [stdout] ```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-small_well_tested-LQSGN3" "-j40" "--shard=0/1000"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=<151 lines total>
[INFO] [stdout] ```
[INFO] [stdout] Found 1 mutant to test
[INFO] [stdout] FAILED   Unmutated baseline in 1s build + 0s test
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-small-well-tested@0.0.0
[INFO] [stdout]     Blocking waiting for file lock on artifact directory
[INFO] [stdout]        Fresh cargo-mutants-testdata-small-well-tested v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-small_well_tested-LQSGN3-SKD9Jv.tmp)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> src/lib.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn factorial(n: u32) -> u32 {
[INFO] [stdout]   |                  ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] warning: `cargo-mutants-testdata-small-well-tested` (lib test) generated 1 warning (run `cargo fix --lib -p cargo-mutants-testdata-small-well-tested --tests` to apply 1 suggestion)
[INFO] [stdout]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.73s
[INFO] [stdout]   Executable `/opt/rustwide/target/debug/deps/cargo_mutants_testdata_small_well_tested-ce43eef85717d7ce`
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] <91 lines omitted>
[INFO] [stdout] ```
[INFO] [stdout]   31:     0x5f7021afb46b - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5f7021afb46b - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5f7021af6b84 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5f7021af6b84 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x5f7021afe072 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x5f7021afe072 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x5f7021afe072 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x5f7021afe072 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x5f7021afe072 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5f7021afe072 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x5f7021afe072 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5f7021b64cdf - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   43:     0x5f7021b64cdf - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x71a3d8801aa4 - <unknown>
[INFO] [stdout]   45:     0x71a3d888ea64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test::test_factorial
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] error: test failed, to rerun pass `-p cargo-mutants-testdata-small-well-tested --lib`
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr=```
[INFO] [stdout]  WARN --jobs=40 is probably too high and may overload your machine: each job runs a separate `cargo` process, and cargo may internally start many threads and subprocesses; values <= 8 are usually safe
[INFO] [stdout] ERROR cargo test failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427eb045 - main::warn_about_too_many_jobs::hd444754c8659b074
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1688:10
[INFO] [stdout]   25:     0x575b427eb0c7 - main::warn_about_too_many_jobs::{{closure}}::h1b36dd6f40458f7e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1676:30
[INFO] [stdout]   26:     0x575b4283ac76 - core::ops::function::FnOnce::call_once::hd3af5ae36375c88e
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- strict_warnings_about_unused_variables_are_disabled_so_mutants_compile stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'strict_warnings_about_unused_variables_are_disabled_so_mutants_compile' (5524) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo check failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-strict_warnings-MsbmC5" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--check" "--no-times"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo check --tests --verbose --package=cargo-mutants-testdata-strict-warnings@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-strict-warnings v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-strict_warnings-MsbmC5-xHmzWz.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo check failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b4282086e - main::strict_warnings_about_unused_variables_are_disabled_so_mutants_compile::hf53eb78a3a994927
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1011:10
[INFO] [stdout]   25:     0x575b428209f7 - main::strict_warnings_about_unused_variables_are_disabled_so_mutants_compile::{{closure}}::hc46ddad19819331e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1002:76
[INFO] [stdout]   26:     0x575b42839fb6 - core::ops::function::FnOnce::call_once::h8047c3724fd0e24e
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- timeout_when_unmutated_tree_test_hangs stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'timeout_when_unmutated_tree_test_hangs' (5858) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected stdout, failed var.is_match(TIMEOUT *Unmutated baseline in \d+s)
[INFO] [stdout] ├── var: Found 1 mutant to test
[INFO] [stdout] │   FAILED   Unmutated baseline in 11s build
[INFO] [stdout] │   
[INFO] [stdout] │   *** baseline
[INFO] [stdout] │   
[INFO] [stdout] │   *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-already-hangs@0.1.0
[INFO] [stdout] │       Updating crates.io index
[INFO] [stdout] │   warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] │   warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] │   warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] │   error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-already-hangs v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-already_hangs-pl11ZB-2fhxxp.tmp)`
[INFO] [stdout] │   
[INFO] [stdout] │   Caused by:
[INFO] [stdout] │     download of config.json failed
[INFO] [stdout] │   
[INFO] [stdout] │   Caused by:
[INFO] [stdout] │     failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] │   
[INFO] [stdout] │   Caused by:
[INFO] [stdout] │     [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] │   
[INFO] [stdout] │   *** result: Failure(101)
[INFO] [stdout] │   
[INFO] [stdout] └── var as str: Found 1 mutant to test
[INFO] [stdout]     FAILED   Unmutated baseline in 11s build
[INFO] [stdout]     
[INFO] [stdout]     *** baseline
[INFO] [stdout]     
[INFO] [stdout]     *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-already-hangs@0.1.0
[INFO] [stdout]         Updating crates.io index
[INFO] [stdout]     warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout]     warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout]     warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout]     error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-already-hangs v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-already_hangs-pl11ZB-2fhxxp.tmp)`
[INFO] [stdout]     
[INFO] [stdout]     Caused by:
[INFO] [stdout]       download of config.json failed
[INFO] [stdout]     
[INFO] [stdout]     Caused by:
[INFO] [stdout]       failed to download from `https://index.crates.io/config.json`
[INFO] [stdout]     
[INFO] [stdout]     Caused by:
[INFO] [stdout]       [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout]     
[INFO] [stdout]     *** result: Failure(101)
[INFO] [stdout]     
[INFO] [stdout] 
[INFO] [stdout] command=`cd "/tmp/cargo-mutants-testdata-already_hangs-pl11ZB" && env -u RUST_BACKTRACE "/opt/rustwide/target/debug/cargo-mutants" "mutants" "--timeout" "2.9"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 1 mutant to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-already-hangs@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-already-hangs v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-already_hangs-pl11ZB-2fhxxp.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stderr] error: test failed, to rerun pass `--test main`
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428725ae - assert_cmd::assert::Assert::stdout::h9a2e28c9a973e699
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:364:31
[INFO] [stdout]   24:     0x575b428103c7 - main::timeout_when_unmutated_tree_test_hangs::h79fb8a9056cacad1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:698:10
[INFO] [stdout]   25:     0x575b428104e7 - main::timeout_when_unmutated_tree_test_hangs::{{closure}}::h0b21a5a233038cac
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:688:44
[INFO] [stdout]   26:     0x575b42839076 - core::ops::function::FnOnce::call_once::h12d60d33bc108e08
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- tree_fails_without_needed_feature stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tree_fails_without_needed_feature' (5999) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected stderr, failed var.contains(test failed in an unmutated tree)
[INFO] [stdout] ├── var: ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] └── var as str: ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] 
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-fails_without_feature-2THAM2"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 10s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-fails-without-feature@0.0.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-fails-without-feature v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-fails_without_feature-2THAM2-hnVd51.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b42871ac4 - assert_cmd::assert::Assert::stderr::h80cd1c5180facaa5
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:460:31
[INFO] [stdout]   24:     0x575b4280a769 - main::tree_fails_without_needed_feature::h99cbee09c3309306
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3610:10
[INFO] [stdout]   25:     0x575b4280a7e7 - main::tree_fails_without_needed_feature::{{closure}}::hb8fefccf4f4d32f2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3601:39
[INFO] [stdout]   26:     0x575b4283b066 - core::ops::function::FnOnce::call_once::he705ab6f73112d88
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- tree_with_child_directories_is_well_tested stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tree_with_child_directories_is_well_tested' (6048) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=``````
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-with-child-directories}: walk package manifest_path=/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-with-child-directories}: found mutation target src/lib.rs of kind [Lib]
[INFO] [stdout] DEBUG Found packages packages=[Package { name: \"cargo-mutants-testdata-with-child-directories\", version: \"0.1.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }]
[INFO] [stdout] DEBUG No config found in workspace
[INFO] [stdout] DEBUG config=Config { additional_cargo_args: [], additional_cargo_test_args: [], all_features: None, build_timeout_multiplier: None, cap_lints: false, copy_vcs: None, copy_target: None, error_values: [], examine_globs: [], examine_re: [], exclude_globs: [], exclude_re: [], gitignore: None, features: [], minimum_test_timeout: None, no_default_features: None, output: None, profile: None, skip_calls: [], skip_calls_defaults: None, test_package: [], test_workspace: None, timeout_multiplier: None, common: Common { emit_diffs: None, test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG args.features=[]
[INFO] [stdout] DEBUG options=Options { annotations: None, baseline: Run, cap_lints: false, check_only: false, copy_vcs: false, gitignore: false, copy_target: false, in_place: false, jobserver: true, jobserver_tasks: None, leak_dirs: false, test_timeout: None, test_timeout_multiplier: None, test_package: Mutated, build_timeout: None, build_timeout_multiplier: None, minimum_test_timeout: 20s, print_caught: false, print_unviable: false, show_times: true, show_all_logs: false, show_line_col: true, shuffle: false, skip_calls: [\"with_capacity\"], profile: None, additional_cargo_args: [], additional_cargo_test_args: [], features: [], no_default_features: false, all_features: false, examine_globset: None, exclude_globset: None, examine_names: RegexSet([]), exclude_names: RegexSet([]), output_in_dir: None, jobs: None, error_values: [], colors: Auto, emit_json: false, common: Common { emit_diffs: Some(false), test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"
[INFO] [stdout] DEBUG Resolved auto package filter based on enclosing directory package=\"cargo-mutants-testdata-with-child-directories\" package_dir=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp\"
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp\"], ig_builder: IgnoreBuilder { dir: \"\", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: \"\", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout] DEBUG Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout] DEBUG Copied source tree total_bytes=2239 total_files=13 reflink_used=false temp_dir=\"/tmp/cargo-mutants-cargo-mutants-testdata-with_child_directories-Zasvpp-20qEvN.tmp\"
[INFO] [stdout] DEBUG starting jobserver n_tasks=16
[INFO] [stdout] DEBUG test_packages=Explicit([Package { name: \"cargo-mutants-testdata-with-child-directories\", version: \"0.1.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }])
[INFO] [stdout] DEBUG run{phase=Build}: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-with-child-directories@0.1.0
[INFO] [stdout] DEBUG run{phase=Build}: process_status=Failure(101) elapsed=11.117795714s
[INFO] [stdout] DEBUG outcome=Failure
[INFO] [stdout] ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] ```
[INFO] [stdout] ```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp" "-Ldebug"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 22 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-with-child-directories@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `cargo-mutants-testdata-with-child-directories v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-with_child_directories-Zasvpp-20qEvN.tmp)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr=```
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-with-child-directories}: walk package manifest_path=/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-with-child-directories}: found mutation target src/lib.rs of kind [Lib]
[INFO] [stdout] DEBUG Found packages packages=[Package { name: \"cargo-mutants-testdata-with-child-directories\", version: \"0.1.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }]
[INFO] [stdout] DEBUG No config found in workspace
[INFO] [stdout] DEBUG config=Config { additional_cargo_args: [], additional_cargo_test_args: [], all_features: None, build_timeout_multiplier: None, cap_lints: false, copy_vcs: None, copy_target: None, error_values: [], examine_globs: [], examine_re: [], exclude_globs: [], exclude_re: [], gitignore: None, features: [], minimum_test_timeout: None, no_default_features: None, output: None, profile: None, skip_calls: [], skip_calls_defaults: None, test_package: [], test_workspace: None, timeout_multiplier: None, common: Common { emit_diffs: None, test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG args.features=[]
[INFO] [stdout] DEBUG options=Options { annotations: None, baseline: Run, cap_lints: false, check_only: false, copy_vcs: false, gitignore: false, copy_target: false, in_place: false, jobserver: true, jobserver_tasks: None, leak_dirs: false, test_timeout: None, test_timeout_multiplier: None, test_package: Mutated, build_timeout: None, build_timeout_multiplier: None, minimum_test_timeout: 20s, print_caught: false, print_unviable: false, show_times: true, show_all_logs: false, show_line_col: true, shuffle: false, skip_calls: [\"with_capacity\"], profile: None, additional_cargo_args: [], additional_cargo_test_args: [], features: [], no_default_features: false, all_features: false, examine_globset: None, exclude_globset: None, examine_names: RegexSet([]), exclude_names: RegexSet([]), output_in_dir: None, jobs: None, error_values: [], colors: Auto, emit_json: false, common: Common { emit_diffs: Some(false), test_tool: None, sharding: None } }
[INFO] [stdout] DEBUG cargo locate-project output: {\"root\":\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp/Cargo.toml\"
[INFO] [stdout] DEBUG Resolved auto package filter based on enclosing directory package=\"cargo-mutants-testdata-with-child-directories\" package_dir=\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp\"
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/cargo-mutants-testdata-with_child_directories-Zasvpp\"], ig_builder: IgnoreBuilder { dir: \"\", overrides: Override(Gitignore { set: GlobSet { len: 0, strats: [] }, root: \"\", globs: [], num_ignores: 0, num_whitelists: 0, matches: None }), types: Types { defs: [], selections: [], has_selected: false, glob_to_selection: [], set: GlobSet { len: 0, strats: [] }, matches: Pool(Pool { stacks: [CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. }), CacheLine(Mutex { data: [], poisoned: false, .. })], owner: 0, owner_val: UnsafeCell { .. } }) }, explicit_ignores: [], custom_ignore_filenames: [], opts: IgnoreOptions { hidden: false, ignore: false, parents: true, git_global: false, git_ignore: false, git_exclude: false, ignore_case_insensitive: false, require_git: true } }, max_depth: None, max_filesize: None, follow_links: false, threads: 0, skip: None }
[INFO] [stdout] DEBUG Reflink failed: Operation not supported (os error 95), falling back to regular copy
[INFO] [stdout] DEBUG Copied source tree total_bytes=2239 total_files=13 reflink_used=false temp_dir=\"/tmp/cargo-mutants-cargo-mutants-testdata-with_child_directories-Zasvpp-20qEvN.tmp\"
[INFO] [stdout] DEBUG starting jobserver n_tasks=16
[INFO] [stdout] DEBUG test_packages=Explicit([Package { name: \"cargo-mutants-testdata-with-child-directories\", version: \"0.1.0\", relative_dir: \"\", top_sources: [\"src/lib.rs\"] }])
[INFO] [stdout] DEBUG run{phase=Build}: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-with-child-directories@0.1.0
[INFO] [stdout] DEBUG run{phase=Build}: process_status=Failure(101) elapsed=11.117795714s
[INFO] [stdout] DEBUG outcome=Failure
[INFO] [stdout] ERROR cargo build failed in an unmutated tree, so no mutants were tested
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b428131c6 - main::tree_with_child_directories_is_well_tested::h41fe903097b014c9
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:147:10
[INFO] [stdout]   25:     0x575b42813f07 - main::tree_with_child_directories_is_well_tested::{{closure}}::hf6bd22dff5602680
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:139:48
[INFO] [stdout]   26:     0x575b4283a1a6 - core::ops::function::FnOnce::call_once::h8d2c7e36338ec50d
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- workspace_tree_is_well_tested stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'workspace_tree_is_well_tested' (6358) panicked at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5:
[INFO] [stdout] Unexpected failure.
[INFO] [stdout] code=4
[INFO] [stdout] stderr=```"ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-workspace-BNnNVc"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 12 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 11s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-03-05-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo_mutants_testdata_workspace_utils@0.1.0 --package=main@0.1.0 --package=main2@0.1.0
[INFO] [stdout]     Updating crates.io index
[INFO] [stdout] warning: spurious network error (3 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (2 tries remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] warning: spurious network error (1 try remaining): [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] error: failed to get `mutants` as a dependency of package `main v0.1.0 (/tmp/cargo-mutants-cargo-mutants-testdata-workspace-BNnNVc-rmt9RW.tmp/main)`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   download of config.json failed
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   failed to download from `https://index.crates.io/config.json`
[INFO] [stdout] 
[INFO] [stdout] Caused by:
[INFO] [stdout]   [6] Could not resolve hostname (Could not resolve host: index.crates.io)
[INFO] [stdout] 
[INFO] [stdout] *** result: Failure(101)
[INFO] [stdout] 
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr="ERROR cargo build failed in an unmutated tree, so no mutants were tested\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x575b42e170ea - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x575b42e170ea - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x575b42e170ea - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x575b42e2fd4a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x575b42e2fd4a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x575b42e1d5d2 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x575b42e1d5d2 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x575b42df156f - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x575b42df156f - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x575b42e0d289 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x575b428a82ec - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x575b428a82ec - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x575b42e0d442 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x575b42e0d442 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x575b42df1628 - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x575b42de8719 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x575b42df25ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x575b42e306ac - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x575b428dd228 - core::panicking::panic_display::h92a0d0ad455fd4d5
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x575b428e5567 - assert_cmd::assert::AssertError::panic::h4f5ec80cfb2f3501
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:1033:9
[INFO] [stdout]   21:     0x575b428e0fc7 - core::ops::function::FnOnce::call_once::h3c7ec7e75e6c7aa9
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x575b428e2ed3 - core::result::Result<T,E>::unwrap_or_else::hc795941aa49e3320
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x575b428e6470 - assert_cmd::assert::Assert::success::h5dfe048b77eaddea
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/assert_cmd-2.0.17/src/assert.rs:158:28
[INFO] [stdout]   24:     0x575b427f9d94 - main::workspace_tree_is_well_tested::hb9f51375d05fdcfa
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2781:10
[INFO] [stdout]   25:     0x575b427fd607 - main::workspace_tree_is_well_tested::{{closure}}::haf3df4f1028d1c4b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2775:35
[INFO] [stdout]   26:     0x575b42839ff6 - core::ops::function::FnOnce::call_once::h80f4edf3fac5807d
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x575b4289c3cb - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x575b4289c3cb - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x575b428a8dbb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x575b428a8dbb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x575b428a8dbb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x575b428a8dbb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x575b428a44d4 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x575b428a44d4 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x575b428ab9c2 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x575b428ab9c2 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x575b428ab9c2 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x575b428ab9c2 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x575b42e1619f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   46:     0x575b42e1619f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   47:     0x79e51d052aa4 - <unknown>
[INFO] [stdout]   48:     0x79e51d0dfa64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     additional_cargo_args
[INFO] [stdout]     additional_cargo_test_args
[INFO] [stdout]     all_features_config_option
[INFO] [stdout]     cargo_mutants_in_override_dependency_tree_passes
[INFO] [stdout]     cargo_mutants_in_patch_dependency_tree_passes
[INFO] [stdout]     cargo_mutants_in_replace_dependency_tree_passes
[INFO] [stdout]     cargo_test_arg_and_additional_cargo_test_args_combined
[INFO] [stdout]     cargo_test_arg_multiple_options
[INFO] [stdout]     cargo_test_arg_option
[INFO] [stdout]     check_tree_with_mutants_skip
[INFO] [stdout]     constfn_mutation_passes_check
[INFO] [stdout]     diff_trees_well_tested
[INFO] [stdout]     features_config_option
[INFO] [stdout]     hang_avoided_by_build_timeout_with_cap_lints
[INFO] [stdout]     hang_const_fn_is_unviable
[INFO] [stdout]     insta_test_failures_are_detected
[INFO] [stdout]     log_file_names_are_short_and_dont_collide
[INFO] [stdout]     minimum_test_timeout_from_env
[INFO] [stdout]     mutants_causing_tests_to_hang_are_stopped_by_manual_timeout
[INFO] [stdout]     proc_macro_tree_is_well_tested
[INFO] [stdout]     strict_warnings_about_unused_variables_are_disabled_so_mutants_compile
[INFO] [stdout]     test_with_nextest_on_small_tree
[INFO] [stdout]     timeout_when_unmutated_tree_test_hangs
[INFO] [stdout]     tree_fails_without_needed_feature
[INFO] [stdout]     tree_with_child_directories_is_well_tested
[INFO] [stdout]     unexpected_nextest_error_code_causes_a_warning
[INFO] [stdout]     warn_about_too_many_jobs
[INFO] [stdout]     workspace_tree_is_well_tested
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 108 passed; 28 failed; 0 ignored; 0 measured; 0 filtered out; finished in 48.12s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4f4e64461a7225a716f1ef6d0f0d3cbe523c97ae7d620db2ac937aca2627af9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f4e64461a7225a716f1ef6d0f0d3cbe523c97ae7d620db2ac937aca2627af9a", kill_on_drop: false }`
[INFO] [stdout] 4f4e64461a7225a716f1ef6d0f0d3cbe523c97ae7d620db2ac937aca2627af9a
