[INFO] fetching crate cargo-mutants 26.1.2...
[INFO] testing cargo-mutants-26.1.2 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate cargo-mutants 26.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate cargo-mutants 26.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cargo-mutants 26.1.2
[INFO] tweaked toml for crates.io crate cargo-mutants 26.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-mutants 26.1.2 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cargo-mutants 26.1.2 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-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0c2d239e4a25b0a87286920ea4ea295419e8027a726ab3739548d5ae92dffd4
[INFO] running `Command { std: "docker" "start" "-a" "e0c2d239e4a25b0a87286920ea4ea295419e8027a726ab3739548d5ae92dffd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0c2d239e4a25b0a87286920ea4ea295419e8027a726ab3739548d5ae92dffd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0c2d239e4a25b0a87286920ea4ea295419e8027a726ab3739548d5ae92dffd4", kill_on_drop: false }`
[INFO] [stdout] e0c2d239e4a25b0a87286920ea4ea295419e8027a726ab3739548d5ae92dffd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86acfe17dfd5b1324e2631038d2d817adfad546db44ca12de0d0f938e420be9f
[INFO] running `Command { std: "docker" "start" "-a" "86acfe17dfd5b1324e2631038d2d817adfad546db44ca12de0d0f938e420be9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling bitflags v2.8.0
[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 io-lifetimes v1.0.11
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling rustix v0.37.28
[INFO] [stderr]    Compiling guppy-workspace-hack v0.1.0
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling nextest-workspace-hack v0.1.0
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling thiserror v1.0.65
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[INFO] [stderr]    Compiling semver v1.0.25
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[INFO] [stderr]    Compiling num_cpus v1.16.0
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[INFO] [stderr]    Compiling terminal_size v0.2.6
[INFO] [stderr]    Compiling whoami v1.5.0
[INFO] [stderr]    Compiling mutants v0.0.3
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[INFO] [stderr]    Compiling ctrlc v3.4.7
[INFO] [stderr]    Compiling tempfile v3.22.0
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[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 thiserror-impl v1.0.65
[INFO] [stderr]    Compiling clap_derive v4.5.28
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[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling color-print-proc-macro v0.3.7
[INFO] [stderr]    Compiling test-log-macros v0.2.17
[INFO] [stderr]    Compiling matchers v0.2.0
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[INFO] [stderr]    Compiling regex v1.10.0
[INFO] [stderr]    Compiling schemars_derive v0.9.0
[INFO] [stderr]    Compiling ignore v0.4.23
[INFO] [stderr]    Compiling ref-cast v1.0.24
[INFO] [stderr]    Compiling console v0.15.0
[INFO] [stderr]    Compiling color-print v0.3.1
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling strum v0.26.0
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling flickzeug v0.4.5
[INFO] [stderr]    Compiling clap v4.5.28
[INFO] [stderr]    Compiling clap_complete v4.0.0
[INFO] [stderr]    Compiling test-log v0.2.16
[INFO] [stderr]    Compiling serde_spanned v0.6.8
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling cargo-platform v0.1.9
[INFO] [stderr]    Compiling smol_str v0.3.2
[INFO] [stderr]    Compiling jiff v0.1.29
[INFO] [stderr]    Compiling toml_edit v0.20.7
[INFO] [stderr]    Compiling cargo_metadata v0.19.0
[INFO] [stderr]    Compiling schemars v0.9.0
[INFO] [stderr]    Compiling nextest-metadata v0.12.1
[INFO] [stderr]    Compiling toml v0.8.0
[INFO] [stderr]    Compiling cargo-mutants v26.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "86acfe17dfd5b1324e2631038d2d817adfad546db44ca12de0d0f938e420be9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86acfe17dfd5b1324e2631038d2d817adfad546db44ca12de0d0f938e420be9f", kill_on_drop: false }`
[INFO] [stdout] 86acfe17dfd5b1324e2631038d2d817adfad546db44ca12de0d0f938e420be9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ab7780e63b08d77cdcc7b4efd5a1ea5e0e626ce88f95160875781174048c36c
[INFO] running `Command { std: "docker" "start" "-a" "8ab7780e63b08d77cdcc7b4efd5a1ea5e0e626ce88f95160875781174048c36c", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling bstr v1.11.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling predicates-core v1.0.9
[INFO] [stderr]    Compiling float-cmp v0.10.0
[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 assert_cmd v2.0.17
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling assert_matches v1.5.0
[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 predicates v3.1.3
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling globset v0.4.16
[INFO] [stderr]    Compiling ignore v0.4.23
[INFO] [stderr]    Compiling insta v1.12.0
[INFO] [stderr]    Compiling cargo-mutants v26.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 19.55s
[INFO] running `Command { std: "docker" "inspect" "8ab7780e63b08d77cdcc7b4efd5a1ea5e0e626ce88f95160875781174048c36c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab7780e63b08d77cdcc7b4efd5a1ea5e0e626ce88f95160875781174048c36c", kill_on_drop: false }`
[INFO] [stdout] 8ab7780e63b08d77cdcc7b4efd5a1ea5e0e626ce88f95160875781174048c36c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 26ff0b4c8d67ee2f7d33808ffb5bc26cf98b059bc9a6d8cd634481d067aa7ca1
[INFO] running `Command { std: "docker" "start" "-a" "26ff0b4c8d67ee2f7d33808ffb5bc26cf98b059bc9a6d8cd634481d067aa7ca1", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cargo_mutants-3e44a3cfc9ac2ae4)
[INFO] [stdout] 
[INFO] [stdout] running 242 tests
[INFO] [stdout] test cargo::test::all_features_args_passed_to_cargo ... ok
[INFO] [stdout] test cargo::test::nextest_gets_special_cargo_profile_option ... ok
[INFO] [stdout] test annotation::tests::format_mutant_annotation ... ok
[INFO] [stdout] test cargo::test::generate_cargo_args_for_baseline_with_default_options ... 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_with_additional_cargo_test_args_and_package ... ok
[INFO] [stdout] test cargo::test::profile_arg_passed_to_cargo ... ok
[INFO] [stdout] test cargo::test::no_default_features_args_passed_to_cargo ... ok
[INFO] [stdout] test annotation::tests::resolve_auto_not_on_github ... ok
[INFO] [stdout] test annotation::tests::resolve_auto_github_isolated ... ok
[INFO] [stdout] test cargo::test::cap_lints_passed_to_cargo ... ok
[INFO] [stdout] test annotation::tests::resolve_simple ... ok
[INFO] [stdout] test cargo::test::feature_args_passed_to_cargo ... ok
[INFO] [stdout] test console::test::format_duration_test ... ok
[INFO] [stdout] test copy_tree::test::copy_git_dir_when_requested ... ok
[INFO] [stdout] test cargo::test::rustflags_with_empty_encoded_rustflags ... ok
[INFO] [stdout] test cargo::test::rustflags_added_to_existing_encoded_rustflags ... ok
[INFO] [stdout] test cargo::test::rustflags_without_cap_lints_and_no_environment_variables ... ok
[INFO] [stdout] test cargo::test::rustflags_added_to_existing_rustflags ... ok
[INFO] [stdout] test fnvalue::test::arc_replacement ... ok
[INFO] [stdout] test fnvalue::test::array_replacement ... ok
[INFO] [stdout] test copy_tree::test::copy_without_gitignore ... ok
[INFO] [stdout] test cargo::test::rustflags_with_cap_lints_and_no_environment_variables ... ok
[INFO] [stdout] test fnvalue::test::box_unrecognized_type_replacement ... ok
[INFO] [stdout] test copy_tree::test::dont_copy_target_dir_by_default_when_copy_target_false ... ok
[INFO] [stdout] test fnvalue::test::box_usize_replacement ... ok
[INFO] [stdout] test fnvalue::test::btreemap_replacement ... ok
[INFO] [stdout] test fnvalue::test::btreeset_replacement ... ok
[INFO] [stdout] test fnvalue::test::cow_generates_borrowed_and_owned ... ok
[INFO] [stdout] test fnvalue::test::float_replacement ... ok
[INFO] [stdout] test fnvalue::test::http_response_replacement ... ok
[INFO] [stdout] test fnvalue::test::impl_matches_iterator ... ok
[INFO] [stdout] test copy_tree::test::copy_target_dir_when_requested ... ok
[INFO] [stdout] test fnvalue::test::isize_replacements ... ok
[INFO] [stdout] test fnvalue::test::iter_replacement ... ok
[INFO] [stdout] test copy_tree::test::copy_tree_with_parent_ignoring_star ... ok
[INFO] [stdout] test fnvalue::test::match_known_collection ... ok
[INFO] [stdout] test fnvalue::test::match_known_map ... ok
[INFO] [stdout] test copy_tree::test::copy_with_gitignore_but_without_git_dir ... ok
[INFO] [stdout] test copy_tree::test::copy_without_gitignore_by_default ... ok
[INFO] [stdout] test fnvalue::test::rc_replacement ... ok
[INFO] [stdout] test fnvalue::test::match_map ... ok
[INFO] [stdout] test fnvalue::test::recurse_into_result_bool ... ok
[INFO] [stdout] test fnvalue::test::nonzero_integer_replacements ... ok
[INFO] [stdout] test fnvalue::test::option_usize_replacement ... ok
[INFO] [stdout] test fnvalue::test::ref_replacement_leaks_values ... ok
[INFO] [stdout] test fnvalue::test::slice_replacement ... ok
[INFO] [stdout] test fnvalue::test::tuple_combinations ... ok
[INFO] [stdout] test fnvalue::test::tuple_combination_longer ... ok
[INFO] [stdout] test copy_tree::test::copy_with_gitignore_true_in_config_and_git_dir_excludes_ignored_files ... ok
[INFO] [stdout] test fnvalue::test::recurse_into_result_result_bool_with_error_values ... ok
[INFO] [stdout] test fnvalue::test::result_unit_replacement ... ok
[INFO] [stdout] test fnvalue::test::u16_replacements ... ok
[INFO] [stdout] test fnvalue::test::unit_replacement ... ok
[INFO] [stdout] test copy_tree::test::dont_copy_git_dir_or_mutants_out_by_default ... ok
[INFO] [stdout] test fnvalue::test::ref_replacement_recurses ... ok
[INFO] [stdout] test fnvalue::test::ref_mut ... ok
[INFO] [stdout] test fnvalue::test::unknown_container_replacement ... ok
[INFO] [stdout] test glob::test::empty_globs ... ok
[INFO] [stdout] test fnvalue::test::vec_string_replacement ... ok
[INFO] [stdout] test glob::test::glob_without_slash_matches_filename_anywhere ... ok
[INFO] [stdout] test glob::test::set_with_multiple_filenames ... ok
[INFO] [stdout] test glob::test::filename_matches_directories_and_their_contents ... ok
[INFO] [stdout] test glob::test::on_unix_backslash_is_escape ... ok
[INFO] [stdout] test copy_tree::test::copy_with_gitignore_and_git_dir ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_single_insertion ... ok
[INFO] [stdout] test in_diff::test_super::in_empty_diff_file ... ok
[INFO] [stdout] test in_diff::test_super::patch_parse_error ... 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 glob::test::starstar_at_start_of_path_matches_anywhere ... ok
[INFO] [stdout] test in_diff::test_super::strip_patch_path_prefix ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_double_deletion ... ok
[INFO] [stdout] test manifest::test::absolute_path_in_manifest_is_unchanged ... ok
[INFO] [stdout] test manifest::test::cargo_config_toml_paths_outside_tree_are_made_absolute ... ok
[INFO] [stdout] test in_diff::test_super::parse_diff_with_only_moves ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_replacement ... ok
[INFO] [stdout] test manifest::test::fix_patch_section ... ok
[INFO] [stdout] test in_diff::test_super::reconstruct_partial_new_file ... ok
[INFO] [stdout] test in_diff::test_super::affected_lines_from_single_deletion ... ok
[INFO] [stdout] test manifest::test::fix_path_absolute_unchanged ... ok
[INFO] [stdout] test manifest::test::fix_relative_path_in_manifest ... ok
[INFO] [stdout] test in_diff::test_super::parse_diff_with_binary_files ... ok
[INFO] [stdout] test manifest::test::fix_path_relative ... ok
[INFO] [stdout] test manifest::test::subdir_path_in_manifest_is_unchanged ... ok
[INFO] [stdout] test manifest::test::fix_replace_section ... ok
[INFO] [stdout] test mutant::test::squash_lines ... ok
[INFO] [stdout] test mutant::test::always_skip_constructors_called_new ... ok
[INFO] [stdout] test glob::test::starstar_within_path_matches_zero_or_more_directories ... ok
[INFO] [stdout] test options::test::all_features_arg ... ok
[INFO] [stdout] test options::test::arg_overrides_config_skip_calls_defaults ... ok
[INFO] [stdout] test copy_tree::test::copy_non_top_level_target_files ... ok
[INFO] [stdout] test options::test::arg_redundantly_configure_skip_calls_default_on ... ok
[INFO] [stdout] test options::test::cargo_test_arg_and_cargo_test_args_combined ... ok
[INFO] [stdout] test options::test::all_features_command_line_overrides_config ... ok
[INFO] [stdout] test options::test::all_features_from_config ... ok
[INFO] [stdout] test options::test::arg_configure_skip_calls_default_off ... ok
[INFO] [stdout] test options::test::cargo_test_arg_and_config_combined ... ok
[INFO] [stdout] test build_dir::test::build_dir_in_place ... ok
[INFO] [stdout] test glob::test::glob_with_slashes_matches_whole_path ... ok
[INFO] [stdout] test glob::test::literal_filename_matches_anywhere ... ok
[INFO] [stdout] test options::single_threaded_tests::color_control_from_env ... ok
[INFO] [stdout] test mutant::test::discover_factorial_mutants ... ok
[INFO] [stdout] test options::test::cargo_test_arg_multiple_from_command_line ... ok
[INFO] [stdout] test options::test::cargo_test_arg_from_command_line ... ok
[INFO] [stdout] test options::test::cli_timeout_multiplier_overrides_config ... ok
[INFO] [stdout] test options::test::cargo_test_args_after_double_dash ... ok
[INFO] [stdout] test options::test::cargo_test_arg_cargo_test_args_and_config_combined ... ok
[INFO] [stdout] test options::test::config_skip_calls_default_off ... ok
[INFO] [stdout] test options::test::conflicting_build_timeout_options ... ok
[INFO] [stdout] test options::test::copy_target_command_line_overrides_config ... ok
[INFO] [stdout] test options::test::conflicting_timeout_options ... ok
[INFO] [stdout] test options::test::copy_target_command_line_true_overrides_config ... ok
[INFO] [stdout] test options::test::default_options ... ok
[INFO] [stdout] test options::test::copy_target_config_only ... 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 options::test::default_skip_calls_includes_with_capacity ... ok
[INFO] [stdout] test options::test::default_jobserver_settings ... ok
[INFO] [stdout] test options::test::copy_target_from_config ... ok
[INFO] [stdout] test options::test::disable_jobserver ... ok
[INFO] [stdout] test mutant::test::mutate_factorial ... ok
[INFO] [stdout] test options::test::copy_vcs ... ok
[INFO] [stdout] test build_dir::test::for_baseline_in_place ... ok
[INFO] [stdout] test build_dir::test::for_baseline_copied ... ok
[INFO] [stdout] test build_dir::test::build_dir_copy_from ... ok
[INFO] [stdout] test options::test::features_from_config ... ok
[INFO] [stdout] test options::test::features_arg ... ok
[INFO] [stdout] test options::test::jobserver_tasks ... ok
[INFO] [stdout] test options::test::from_config ... 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::test::gitignore_false_in_config ... ok
[INFO] [stdout] test options::test::no_default_features_from_config ... ok
[INFO] [stdout] test options::test::no_copy_target_deprecated_option_still_works ... ok
[INFO] [stdout] test options::test::gitignore_command_line_overrides_config ... ok
[INFO] [stdout] test options::test::features_command_line_and_config_combined ... 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_default_features_command_line_overrides_config ... ok
[INFO] [stdout] test options::test::gitignore_off_by_default ... 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::profile_option_from_args ... ok
[INFO] [stdout] test options::test::skip_calls_from_args ... ok
[INFO] [stdout] test options::test::no_shuffle_option_is_accepted ... ok
[INFO] [stdout] test options::test::profile_from_config ... ok
[INFO] [stdout] test options::test::test_package_arg_with_commas ... ok
[INFO] [stdout] test options::test::options_from_baseline_arg ... ok
[INFO] [stdout] test options::test::test_workspace_arg_false ... ok
[INFO] [stdout] test options::test::skip_calls_from_args_and_options ... ok
[INFO] [stdout] test options::test::test_workspace_arg_true ... ok
[INFO] [stdout] test options::test::test_workspace_args_override_config_true ... ok
[INFO] [stdout] test options::test::test_workspace_args_override_config_false ... ok
[INFO] [stdout] test options::test::test_workspace_arg_false_allows_packages_from_config ... ok
[INFO] [stdout] test options::test::test_workspace_config_false ... ok
[INFO] [stdout] test options::test::options_from_test_tool_arg ... ok
[INFO] [stdout] test output::test::clean_filename_removes_special_characters ... ok
[INFO] [stdout] test path::test::path_ascent ... ok
[INFO] [stdout] test pretty::test::format_trait_with_assoc_type ... ok
[INFO] [stdout] test process::test::shell_quoting ... ok
[INFO] [stdout] test options::test::shuffle_option_is_accepted ... ok
[INFO] [stdout] test outcome::test::find_phase_result ... ok
[INFO] [stdout] test shard::tests::shard_from_str_invalid_input ... ok
[INFO] [stdout] test shard::tests::shard_from_str_valid_input ... ok
[INFO] [stdout] test shard::tests::shard_round_robin ... ok
[INFO] [stdout] test options::test::test_workspace_config_true ... ok
[INFO] [stdout] test path::test::path_slashes_drops_empty_parts ... ok
[INFO] [stdout] test pretty::test::format_thick_arrow ... ok
[INFO] [stdout] test source::test::skips_files_outside_of_workspace ... ok
[INFO] [stdout] test span::test::cut_before_crlf ... ok
[INFO] [stdout] test source::test::source_file_normalizes_crlf ... ok
[INFO] [stdout] test span::test::cut_including_crlf ... ok
[INFO] [stdout] test pretty::test::preserve_boolean_or ... ok
[INFO] [stdout] test pretty::test::pretty_format_examples ... ok
[INFO] [stdout] test span::test::empty_span_at_end_of_string ... ok
[INFO] [stdout] test span::test::empty_span_at_start_of_string ... ok
[INFO] [stdout] test span::test::empty_span_in_empty_string ... ok
[INFO] [stdout] test span::test::linecolumn_debug_form ... ok
[INFO] [stdout] test span::test::span_debug_form ... ok
[INFO] [stdout] test span::test::span_ops ... ok
[INFO] [stdout] test tail_file::test::last_line_of_file ... ok
[INFO] [stdout] test output::test::rotate ... ok
[INFO] [stdout] test output::test::track_previously_caught ... ok
[INFO] [stdout] test test::option_help_sentence_case_without_period ... ok
[INFO] [stdout] test options::test::options_from_timeout_args ... ok
[INFO] [stdout] test timeouts::test::build_timeout_from_option ... ok
[INFO] [stdout] test timeouts::test::build_timeout_is_affected_by_in_place_build ... ok
[INFO] [stdout] test timeouts::test::build_timeout_multiplier_default ... ok
[INFO] [stdout] test pretty::test::pretty_match_guard ... ok
[INFO] [stdout] test timeouts::test::build_timeout_multiplier_from_option ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_default_with_baseline_skip ... ok
[INFO] [stdout] test visit::test::delete_struct_field_with_default ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_from_option ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_from_config ... ok
[INFO] [stdout] test timeouts::test::test_timeout_unaffected_by_in_place_build ... ok
[INFO] [stdout] test visit::test::find_path_attribute_on_module_item ... ok
[INFO] [stdout] test visit::test::find_path_attribute_matches_the_right_attribute ... ok
[INFO] [stdout] test timeouts::test::timeout_from_option ... ok
[INFO] [stdout] test timeouts::test::build_timeout_multiplier_from_config ... ok
[INFO] [stdout] test visit::test::delete_struct_field_complex_values ... ok
[INFO] [stdout] test timeouts::test::no_default_build_timeout ... 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::no_mutants_equivalent_to_source ... ok
[INFO] [stdout] test visit::test::mutate_vec_with_capacity_when_default_skips_are_turned_off ... ok
[INFO] [stdout] test visit::test::mutants_from_test_str ... ok
[INFO] [stdout] test visit::test::mutate_match_arms_with_fallback ... ok
[INFO] [stdout] test visit::test::do_not_skip_functions_with_non_test_attributes ... ok
[INFO] [stdout] test visit::test::mutate_match_guard ... ok
[INFO] [stdout] test visit::test::skip_functions_with_arbitrary_test_attribute ... ok
[INFO] [stdout] test visit::test::skip_functions_with_tokio_test_attribute ... ok
[INFO] [stdout] test options::test::sharding ... ok
[INFO] [stdout] test timeouts::test::timeout_multiplier_default ... ok
[INFO] [stdout] test visit::test::skip_functions_with_test_attribute ... ok
[INFO] [stdout] test mutant::test::filter_by_attributes ... ok
[INFO] [stdout] test visit::test::skip_match_arms_without_fallback ... ok
[INFO] [stdout] test visit::test::reject_module_path_absolute ... ok
[INFO] [stdout] test visit::test::skip_named_fn ... ok
[INFO] [stdout] test visit::test::skip_functions_with_sqlx_test_attribute ... ok
[INFO] [stdout] test visit::test::skip_method_calls_by_name ... ok
[INFO] [stdout] test visit::test::path_ends_with ... ok
[INFO] [stdout] test visit::test::mutate_comparisons ... ok
[INFO] [stdout] test visit::test::skip_removing_match_arm_with_guard ... ok
[INFO] [stdout] test visit::test::skip_struct_without_default ... ok
[INFO] [stdout] test visit::test::mutate_assign_ops ... ok
[INFO] [stdout] test visit::test::skip_unsafe_fn ... ok
[INFO] [stdout] test visit::test::mutant_name_includes_type_parameters ... ok
[INFO] [stdout] test visit::test::skip_with_capacity_by_default ... ok
[INFO] [stdout] test visit::test::mutate_binops ... ok
[INFO] [stdout] test output::test::create_output_dir ... ok
[INFO] [stdout] test workspace::test::error_opening_outside_of_crate ... ok
[INFO] [stdout] test workspace::test::package_filter_all_from_subdir_gets_everything ... ok
[INFO] [stdout] test workspace::test::find_top_source_files_from_subdirectory_of_workspace ... ok
[INFO] [stdout] test workspace::test::filter_by_single_package ... ok
[INFO] [stdout] test workspace::test::open_subdirectory_of_crate_opens_the_crate ... ok
[INFO] [stdout] test workspace::test::find_root_from_subdirectory_of_workspace_finds_the_workspace_root ... ok
[INFO] [stdout] test workspace::test::auto_packages_in_virtual_workspace_gets_everything ... 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::auto_packages_in_workspace_subdir_finds_single_package ... ok
[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] [stderr]      Running tests/main.rs (/opt/rustwide/target/debug/deps/main-a257c3ab256c1818)
[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_tests_are_detected_before_running_mutants ... ok
[INFO] [stdout] test already_failing_doctests_are_detected ... ok
[INFO] [stdout] test check_tree_where_build_fails ... ok
[INFO] [stdout] test check_succeeds_in_tree_that_builds_but_fails_tests ... ok
[INFO] [stdout] test clicolor_force_shows_in_stdout_and_trace ... ok
[INFO] [stdout] test completions_option_generates_something ... ok
[INFO] [stdout] test config_option_mutual_exclusion_with_no_config ... ok
[INFO] [stdout] test already_failing_doctests_can_be_skipped_with_cargo_arg ... ok
[INFO] [stdout] test colors_always_shows_in_stdout_and_trace ... ok
[INFO] [stdout] test config_option_reads_custom_file ... ok
[INFO] [stdout] test config_option_vs_default_behavior ... ok
[INFO] [stdout] test copy_testdata_doesnt_include_build_artifacts ... ok
[INFO] [stdout] test config_option_nonexistent_file ... ok
[INFO] [stdout] test diff_containing_non_utf8_is_not_an_error ... ok
[INFO] [stdout] test cdylib_tree_is_well_tested ... ok
[INFO] [stdout] test diff_with_multiple_deletions_is_ok ... ok
[INFO] [stdout] test emit_config_schema ... ok
[INFO] [stdout] test empty_diff_is_not_an_error_and_matches_nothing ... ok
[INFO] [stdout] test env_var_controls_trace ... ok
[INFO] [stdout] test baseline_test_respects_package_options ... 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_args ... FAILED
[INFO] [stdout] test cargo_mutants_in_patch_dependency_tree_passes ... FAILED
[INFO] [stdout] test cargo_test_arg_multiple_options ... FAILED
[INFO] [stdout] test additional_cargo_test_args ... FAILED
[INFO] [stdout] test cargo_mutants_in_replace_dependency_tree_passes ... FAILED
[INFO] [stdout] test cargo_test_arg_option ... FAILED
[INFO] [stdout] test cargo_test_arg_and_additional_cargo_test_args_combined ... FAILED
[INFO] [stdout] test cargo_mutants_in_override_dependency_tree_passes ... FAILED
[INFO] [stdout] test all_features_config_option ... FAILED
[INFO] [stdout] test file_argument_overrides_config_examine_globs_key ... ok
[INFO] [stdout] test gitignore_respected_when_enabled ... ok
[INFO] [stdout] test fail_when_error_value_does_not_parse ... ok
[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 constfn_mutation_passes_check ... FAILED
[INFO] [stdout] test in_place_check_leaves_no_changes ... ok
[INFO] [stdout] test invalid_cargo_term_color_rejected_with_message ... ok
[INFO] [stdout] test invalid_field_rejected ... ok
[INFO] [stdout] test invalid_toml_rejected ... ok
[INFO] [stdout] test gitignore_can_be_turned_off ... ok
[INFO] [stdout] test interrupt_caught_and_kills_children ... 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 gitignore_not_respected_by_default ... ok
[INFO] [stdout] test list_mutants_in_cfg_attr_mutants_skip ... 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 features_config_option ... FAILED
[INFO] [stdout] test list_mutants_regex_filters ... ok
[INFO] [stdout] test list_mutants_regex_anchored_matches_full_line ... ok
[INFO] [stdout] test list_mutants_regex_filters_json ... ok
[INFO] [stdout] test list_mutants_well_tested ... ok
[INFO] [stdout] test list_mutants_well_tested_examine_and_exclude_name_filter_combined ... ok
[INFO] [stdout] test list_mutants_well_tested_exclude_folder_filter ... ok
[INFO] [stdout] test list_mutants_well_tested_examine_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_well_tested_exclude_name_filter ... ok
[INFO] [stdout] test hang_avoided_by_build_timeout_with_cap_lints ... FAILED
[INFO] [stdout] test list_mutants_with_diffs_in_factorial ... ok
[INFO] [stdout] test list_mutants_with_dir_option ... ok
[INFO] [stdout] test list_mutants_with_alternate_registry ... 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 hang_const_fn_is_unviable ... FAILED
[INFO] [stdout] test list_with_config_file_regexps ... ok
[INFO] [stdout] test list_with_config_file_exclusion ... ok
[INFO] [stdout] test list_with_config_file_inclusion ... ok
[INFO] [stdout] test missing_cargo_subcommand ... ok
[INFO] [stdout] test insta_test_failures_are_detected ... FAILED
[INFO] [stdout] test error_value_catches_untested_ok_case ... ok
[INFO] [stdout] test mismatched_diff_causes_error ... ok
[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 in_workspace_only_relevant_packages_included_in_baseline_tests_by_file_filter ... ok
[INFO] [stdout] test factorial_mutants_no_copy_target ... ok
[INFO] [stdout] test minimum_test_timeout_from_env ... FAILED
[INFO] [stdout] test factorial_mutants_with_all_logs_and_nocapture ... ok
[INFO] [stdout] test factorial_mutants_with_all_logs ... ok
[INFO] [stdout] test show_help ... ok
[INFO] [stdout] test show_version ... ok
[INFO] [stdout] test jobs_option_accepted_and_causes_multiple_threads ... FAILED
[INFO] [stdout] test diff_trees_well_tested ... FAILED
[INFO] [stdout] test list_mutants_changed_in_diff1 ... ok
[INFO] [stdout] test shard_divides_all_mutants ... ok
[INFO] [stdout] test source_tree_parse_fails ... ok
[INFO] [stdout] test small_well_tested_mutants_with_cargo_arg_release ... ok
[INFO] [stdout] test source_tree_typecheck_fails ... ok
[INFO] [stdout] test integration_test_source_is_not_mutated ... 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_use_config ... ok
[INFO] [stdout] test output_option ... ok
[INFO] [stdout] test output_option_use_env ... ok
[INFO] [stdout] test small_well_tested_tree_check_only ... ok
[INFO] [stdout] test unexpected_nextest_error_code_causes_a_warning ... FAILED
[INFO] [stdout] test uses_cargo_env_var_to_run_cargo_so_invalid_value_fails ... ok
[INFO] [stdout] test no_config_option_disables_config_file_so_error_value_is_not_generated ... 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 small_well_tested_tree_check_only_shuffled ... ok
[INFO] [stdout] test warning_when_no_mutants_found ... ok
[INFO] [stdout] test unviable_mutation_of_struct_with_no_default ... ok
[INFO] [stdout] test warn_about_too_many_jobs ... FAILED
[INFO] [stdout] test proc_macro_tree_is_well_tested ... 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 mutants_are_unapplied_after_testing_so_later_missed_mutants_are_found ... ok
[INFO] [stdout] test strict_warnings_about_unused_variables_are_disabled_so_mutants_compile ... FAILED
[INFO] [stdout] test timeout_when_unmutated_tree_test_hangs ... FAILED
[INFO] [stdout] test uncaught_mutant_in_factorial ... ok
[INFO] [stdout] test tree_fails_without_needed_feature ... FAILED
[INFO] [stdout] test tree_with_child_directories_is_well_tested ... FAILED
[INFO] [stdout] test workspace_tree_is_well_tested ... FAILED
[INFO] [stdout] test cross_package_tests ... ok
[INFO] [stdout] test iterate_retries_missed_mutants ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- additional_cargo_args stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'additional_cargo_args' (323) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-bBfjup"`
[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-2026-01-20-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-bBfjup-yyUuR7.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b19eec6 - main::additional_cargo_args::h5acea3810489c15f
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3606:10
[INFO] [stdout]   25:     0x5a572b19ef27 - main::additional_cargo_args::{{closure}}::h3ffb7bd9b084d5d7
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3594:27
[INFO] [stdout]   26:     0x5a572b22eda6 - core::ops::function::FnOnce::call_once::h24a45b7289e01d1d
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (337) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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/.tmpJDW0dn/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-2026-01-20-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-MkDqmR.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1cd06d - main::cargo_mutants_in_patch_dependency_tree_passes::h8c084377bb0c251c
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:950:10
[INFO] [stdout]   25:     0x5a572b1cd1b7 - main::cargo_mutants_in_patch_dependency_tree_passes::{{closure}}::h51b8ac88aeea3f00
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:941:51
[INFO] [stdout]   26:     0x5a572b22f536 - core::ops::function::FnOnce::call_once::h647e635a634b37d6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (382) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-kKs8aP"`
[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-2026-01-20-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-kKs8aP-7AoSSR.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1b96ed - main::cargo_test_arg_multiple_options::hce5215a4c97ee0e0
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1201:10
[INFO] [stdout]   25:     0x5a572b1b9757 - main::cargo_test_arg_multiple_options::{{closure}}::h78fbf6ce1d88bd62
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1190:37
[INFO] [stdout]   26:     0x5a572b230f96 - core::ops::function::FnOnce::call_once::hfc1678d8586f3b42
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- additional_cargo_test_args stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'additional_cargo_test_args' (324) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-zRvN5C"`
[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-2026-01-20-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-zRvN5C-tbdF1L.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1a72d6 - main::additional_cargo_test_args::ha434a01b678054eb
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3622:10
[INFO] [stdout]   25:     0x5a572b1a7337 - main::additional_cargo_test_args::{{closure}}::h58437c1352aafa65
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3610:32
[INFO] [stdout]   26:     0x5a572b2306a6 - core::ops::function::FnOnce::call_once::hc55f266482e5e977
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (339) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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/.tmpPyrtuf/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-2026-01-20-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-g6JZNS.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1d0371 - main::cargo_mutants_in_replace_dependency_tree_passes::h0e049ea521636d32
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:933:10
[INFO] [stdout]   25:     0x5a572b1d04b7 - main::cargo_mutants_in_replace_dependency_tree_passes::{{closure}}::h747a6471c87d0318
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:923:53
[INFO] [stdout]   26:     0x5a572b22f376 - core::ops::function::FnOnce::call_once::h52fbd932dc113ed3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- cargo_test_arg_option stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'cargo_test_arg_option' (481) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-4djSTZ"`
[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-2026-01-20-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-4djSTZ-wZdMHb.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b19f092 - main::cargo_test_arg_option::hf8de4a13c511f7b6
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1186:10
[INFO] [stdout]   25:     0x5a572b19f0f7 - main::cargo_test_arg_option::{{closure}}::h8f9945ca1a7da3f8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1180:27
[INFO] [stdout]   26:     0x5a572b22f736 - core::ops::function::FnOnce::call_once::h71733228cd9fd335
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (356) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-UDjJQl"`
[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-2026-01-20-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-UDjJQl-RHz9Gr.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1d5061 - main::cargo_test_arg_and_additional_cargo_test_args_combined::h4b995e73c68d5b5d
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1217:10
[INFO] [stdout]   25:     0x5a572b1d50c7 - main::cargo_test_arg_and_additional_cargo_test_args_combined::{{closure}}::h12dcd1aa31d2a5a8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1205:60
[INFO] [stdout]   26:     0x5a572b22f576 - core::ops::function::FnOnce::call_once::h65168f338c48f896
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (336) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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/.tmpxSjvuS/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-2026-01-20-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-jLJTAN.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1d0a41 - main::cargo_mutants_in_override_dependency_tree_passes::hb1ca4144be7d4ba2
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:896:10
[INFO] [stdout]   25:     0x5a572b1d0b87 - main::cargo_mutants_in_override_dependency_tree_passes::{{closure}}::h89aa7b0eb6be8507
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:886:54
[INFO] [stdout]   26:     0x5a572b22fe26 - core::ops::function::FnOnce::call_once::h92157cce2f4cddfb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- all_features_config_option stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'all_features_config_option' (325) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-mWBTFe"`
[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-2026-01-20-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-mWBTFe-W5aCMg.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1a74a6 - main::all_features_config_option::h7305ffcf2456b653
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3654:10
[INFO] [stdout]   25:     0x5a572b1a7507 - main::all_features_config_option::{{closure}}::hd1019c5413245a44
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3642:32
[INFO] [stdout]   26:     0x5a572b22fcc6 - core::ops::function::FnOnce::call_once::h8e95bfe962f4b6eb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (772) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-NjcEFx" && 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-2026-01-20-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-NjcEFx-vtnbzd.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1ab2cb - main::check_tree_with_mutants_skip::he94ab753c0728199
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2576:10
[INFO] [stdout]   25:     0x5a572b1ac057 - main::check_tree_with_mutants_skip::{{closure}}::h72f2b5f1983a7e13
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2568:34
[INFO] [stdout]   26:     0x5a572b230066 - core::ops::function::FnOnce::call_once::h9aa5ece590c82142
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- constfn_mutation_passes_check stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'constfn_mutation_passes_check' (1383) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-REfkWs" && 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-2026-01-20-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-REfkWs-ZZVz1M.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e7ace - assert_cmd::assert::Assert::code::h639d9c0c5b90b6c2
[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:     0x5a572b1ae39a - main::constfn_mutation_passes_check::h7b8b5b4d4650c804
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:829:10
[INFO] [stdout]   25:     0x5a572b1ae517 - main::constfn_mutation_passes_check::{{closure}}::h9a264680d6439f6b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:820:35
[INFO] [stdout]   26:     0x5a572b230726 - core::ops::function::FnOnce::call_once::hc75428b4eeba6e03
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- features_config_option stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'features_config_option' (2032) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-z7Zt6Z"`
[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-2026-01-20-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-z7Zt6Z-aZtcGj.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1a0f56 - main::features_config_option::h03b9eb1ff0b7a5b5
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3638:10
[INFO] [stdout]   25:     0x5a572b1a0fb7 - main::features_config_option::{{closure}}::h126b25e887006097
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3626:28
[INFO] [stdout]   26:     0x5a572b2308c6 - core::ops::function::FnOnce::call_once::hd36fa10cf4c5104c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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]    0.146858366s DEBUG cargo_mutants::copy_tree: src/copy_tree.rs:108: walk_builder=WalkBuilder { paths: ["/tmp/cargo-mutants-testdata-hang_const-B56Y2W"], 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]    0.147245606s 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]    0.159402920s 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-B56Y2W-ycF3h4.tmp"
[INFO] [stdout]    0.160000810s DEBUG cargo_mutants::lab: src/lab.rs:56: starting jobserver n_tasks=16
[INFO] [stdout]    0.160159590s 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]    0.160226760s DEBUG run{phase=Build}: cargo_mutants::cargo: src/cargo.rs:55: encoded_rustflags="--cap-lints=warn\u{1f}--cap-lints=warn"
[INFO] [stdout]    0.160275680s DEBUG run{phase=Build}: cargo_mutants::process: src/process.rs:81: start process quoted_argv=/opt/rustwide/rustup-home/toolchains/beta-2026-01-20-x86_64-unknown-linux-gnu/bin/cargo test --no-run --verbose --package=cargo-mutants-testdata-hang-const@0.0.0
[INFO] [stdout]   11.550694688s DEBUG run{phase=Build}: cargo_mutants::cargo: src/cargo.rs:68: process_status=Failure(101) elapsed=11.390482448s
[INFO] [stdout]   11.551069719s DEBUG cargo_mutants::lab: src/lab.rs:321: outcome=Failure
[INFO] [stdout]   11.551210409s 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' (2054) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-B56Y2W" && 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-2026-01-20-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-B56Y2W-ycF3h4.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e7ace - assert_cmd::assert::Assert::code::h639d9c0c5b90b6c2
[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:     0x5a572b1cc8d0 - main::hang_avoided_by_build_timeout_with_cap_lints::h8d761945dfc9d626
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:810:9
[INFO] [stdout]   25:     0x5a572b1ccaf7 - main::hang_avoided_by_build_timeout_with_cap_lints::{{closure}}::h4feaa8316e1d367c
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:797:50
[INFO] [stdout]   26:     0x5a572b230416 - core::ops::function::FnOnce::call_once::hb374d4a4be73a879
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (2120) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-yzt99V" && 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-2026-01-20-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-yzt99V-L3FNR2.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e7ace - assert_cmd::assert::Assert::code::h639d9c0c5b90b6c2
[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:     0x5a572b1a2a7b - main::hang_const_fn_is_unviable::hd537dcb0a8dee444
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:694:10
[INFO] [stdout]   25:     0x5a572b1a3ca7 - main::hang_const_fn_is_unviable::{{closure}}::hd87623fb506e107b
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:685:31
[INFO] [stdout]   26:     0x5a572b22f866 - core::ops::function::FnOnce::call_once::h792aea2211dc5cde
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (2318) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-5eokVT/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-5eokVT/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-insta-5eokVT/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-insta-5eokVT\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: walk package manifest_path=/tmp/cargo-mutants-testdata-insta-5eokVT/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-5eokVT/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-5eokVT/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-5eokVT\"
[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-5eokVT\"], 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-5eokVT-0Qw8C3.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-2026-01-20-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=10.808657418s
[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-5eokVT" && 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-2026-01-20-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-5eokVT-0Qw8C3.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-5eokVT/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-5eokVT/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-insta-5eokVT/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-insta-5eokVT\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-insta}: walk package manifest_path=/tmp/cargo-mutants-testdata-insta-5eokVT/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-5eokVT/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-insta-5eokVT/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-5eokVT\"
[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-5eokVT\"], 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-5eokVT-0Qw8C3.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-2026-01-20-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=10.808657418s
[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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1be8fc - main::insta_test_failures_are_detected::hfd87a9014a54c608
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1939:14
[INFO] [stdout]   25:     0x5a572b1be967 - main::insta_test_failures_are_detected::{{closure}}::hea0525b9b7f306a4
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1929:38
[INFO] [stdout]   26:     0x5a572b22fa86 - core::ops::function::FnOnce::call_once::h7dda74d86fdd952f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (3949) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-VeTVte" && CARGO_MUTANTS_MINIMUM_TEST_TIMEOUT="1234" "/opt/rustwide/target/debug/cargo-mutants" "mutants"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=<135 lines total>
[INFO] [stdout] ```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] FAILED   Unmutated baseline in 1s build + 2s test
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-01-20-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]        Dirty cargo-mutants-testdata-small-well-tested v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-small_well_tested-VeTVte-xcS0De.tmp): the file `src/lib.rs` has changed (1769580090.223124289s, 31394393ns after last build at 1769580090.191729896s)
[INFO] [stdout]    Compiling cargo-mutants-testdata-small-well-tested v0.0.0 (/tmp/cargo-mutants-cargo-mutants-testdata-small_well_tested-VeTVte-xcS0De.tmp)
[INFO] [stdout]      Running `/opt/rustwide/rustup-home/toolchains/beta-2026-01-20-x86_64-unknown-linux-gnu/bin/rustc --crate-name cargo_mutants_testdata_small_well_tested --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --check-cfg \'cfg(docsrs,test)\' --check-cfg \'cfg(feature, values())\' -C metadata=d938ae7b795d68f1 -C extra-filename=-ce43eef85717d7ce --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn`
[INFO] [stdout]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] [stdout]   Executable `/opt/rustwide/target/debug/deps/cargo_mutants_testdata_small_well_tested-ce43eef85717d7ce`
[INFO] [stdout] 
[INFO] [stdout] *** result: Success
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-01-20-x86_64-unknown-linux-gnu/bin/cargo test --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-VeTVte-xcS0De.tmp)
[INFO] [stdout]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.24s
[INFO] [stdout]      Running `/opt/rustwide/target/debug/deps/cargo_mutants_testdata_small_well_tested-ce43eef85717d7ce`
[INFO] [stdout] ```
[INFO] [stdout] <75 lines omitted>
[INFO] [stdout] ```
[INFO] [stdout]   31:     0x5f8c87982b5a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5f8c87982b5a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5f8c8795cfb4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5f8c8795cfb4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x5f8c87960872 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x5f8c87960872 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x5f8c87960872 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x5f8c87960872 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x5f8c87960872 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5f8c87960872 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x5f8c87960872 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5f8c879a172f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x5f8c879a172f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7a2ee0cc4aa4 - <unknown>
[INFO] [stdout]   45:     0x7a2ee0d51a64 - 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 0.05s
[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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1b08f3 - main::minimum_test_timeout_from_env::h611a626e4e44a955
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:653:10
[INFO] [stdout]   25:     0x5a572b1b09e7 - main::minimum_test_timeout_from_env::{{closure}}::hf49fb6973ae23bb1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:645:35
[INFO] [stdout]   26:     0x5a572b22f4b6 - core::ops::function::FnOnce::call_once::h60799b1b2c2d2e99
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- jobs_option_accepted_and_causes_multiple_threads stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'jobs_option_accepted_and_causes_multiple_threads' (3117) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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 120s\n"```
[INFO] [stdout] command=`"/opt/rustwide/target/debug/cargo-mutants" "mutants" "-d" "/tmp/cargo-mutants-testdata-small_well_tested-0aGnex" "-j2" "--minimum-test-timeout=120"`
[INFO] [stdout] code=2
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] ok       Unmutated baseline in 1s build + 1s test
[INFO] [stdout] MISSED   src/lib.rs:5:5: replace factorial -> u32 with 0 in 1s build + 1s test
[INFO] [stdout] MISSED   src/lib.rs:5:5: replace factorial -> u32 with 1 in 1s build + 1s test
[INFO] [stdout] 4 mutants tested in 8s: 2 missed, 2 caught
[INFO] [stdout] ```
[INFO] [stdout] 
[INFO] [stdout] stderr=" INFO Auto-set test timeout to 120s\n"
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1d1b2f - main::jobs_option_accepted_and_causes_multiple_threads::hc70b90f24de37bc1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1632:10
[INFO] [stdout]   25:     0x5a572b1d1f37 - main::jobs_option_accepted_and_causes_multiple_threads::{{closure}}::h0afe9400ae20b0c7
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1623:54
[INFO] [stdout]   26:     0x5a572b230b06 - core::ops::function::FnOnce::call_once::he1dcc09b11f97fbd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- diff_trees_well_tested stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'diff_trees_well_tested' (1482) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-zkCz9R"`
[INFO] [stdout] code=2
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 4 mutants to test
[INFO] [stdout] ok       Unmutated baseline in 0s build + 1s test
[INFO] [stdout] MISSED   src/lib.rs:2:5: replace one -> String with \"xyzzy\".into() in 0s build + 1s 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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1a0b19 - main::diff_trees_well_tested::ha23e715775a709d8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1951:14
[INFO] [stdout]   25:     0x5a572b1a0b77 - main::diff_trees_well_tested::{{closure}}::h020399c2a5439fe8
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1944:28
[INFO] [stdout]   26:     0x5a572b230886 - core::ops::function::FnOnce::call_once::hd35aca1857eba2ae
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (3931) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-iDh4l8" && 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-2026-01-20-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-iDh4l8-jPRQyP.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1c8573 - main::log_file_names_are_short_and_dont_collide::h199e81774b521f14
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:843:10
[INFO] [stdout]   25:     0x5a572b1c8ee7 - main::log_file_names_are_short_and_dont_collide::{{closure}}::h1d537098eb3b2252
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:834:47
[INFO] [stdout]   26:     0x5a572b22ec36 - core::ops::function::FnOnce::call_once::h1986c1bd0b32715a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (5756) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-2026-01-20-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-2026-01-20-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-KBLqMU"`
[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-2026-01-20-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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e8813 - assert_cmd::assert::Assert::stdout::hbbf3b3983e38563a
[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:     0x5a572b1bca3e - main::test_with_nextest_on_small_tree::hd9424e15ee9090c9
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1243:10
[INFO] [stdout]   25:     0x5a572b1bcc37 - main::test_with_nextest_on_small_tree::{{closure}}::hf9f1ff1b3dc71c0c
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1235:37
[INFO] [stdout]   26:     0x5a572b230ed6 - core::ops::function::FnOnce::call_once::hf86d9996ba93a030
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (4077) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-VkAGwJ" && 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-2026-01-20-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-VkAGwJ-3NWQLw.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e7ace - assert_cmd::assert::Assert::code::h639d9c0c5b90b6c2
[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:     0x5a572b1d5e7e - main::mutants_causing_tests_to_hang_are_stopped_by_manual_timeout::h05687830cbeb4375
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:761:10
[INFO] [stdout]   25:     0x5a572b1d6897 - main::mutants_causing_tests_to_hang_are_stopped_by_manual_timeout::{{closure}}::h83529ef0a3943dda
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:751:65
[INFO] [stdout]   26:     0x5a572b22fd06 - core::ops::function::FnOnce::call_once::h8ec7225cefb31fa2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (5896) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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/.tmpDUvKke/Cargo.toml"}
[INFO] [stdout] │   DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpDUvKke/Cargo.toml"
[INFO] [stdout] │   DEBUG Find workspace metadata manifest_path="/tmp/.tmpDUvKke/Cargo.toml"
[INFO] [stdout] │   DEBUG Found workspace root workspace_root="/tmp/.tmpDUvKke"
[INFO] [stdout] │   DEBUG package{name=cargo-mutants-test}: walk package manifest_path=/tmp/.tmpDUvKke/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/.tmpDUvKke/Cargo.toml"}
[INFO] [stdout] │   DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpDUvKke/Cargo.toml"
[INFO] [stdout] │   DEBUG Resolved auto package filter based on enclosing directory package="cargo-mutants-test" package_dir="/tmp/.tmpDUvKke"
[INFO] [stdout] │   DEBUG walk_builder=WalkBuilder { paths: ["/tmp/.tmpDUvKke"], 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-.tmpDUvKke-Djw7zm.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-2026-01-20-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=107.411294ms
[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/.tmpDUvKke/Cargo.toml"}
[INFO] [stdout]     DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpDUvKke/Cargo.toml"
[INFO] [stdout]     DEBUG Find workspace metadata manifest_path="/tmp/.tmpDUvKke/Cargo.toml"
[INFO] [stdout]     DEBUG Found workspace root workspace_root="/tmp/.tmpDUvKke"
[INFO] [stdout]     DEBUG package{name=cargo-mutants-test}: walk package manifest_path=/tmp/.tmpDUvKke/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/.tmpDUvKke/Cargo.toml"}
[INFO] [stdout]     DEBUG Found workspace root manifest cargo_toml_path="/tmp/.tmpDUvKke/Cargo.toml"
[INFO] [stdout]     DEBUG Resolved auto package filter based on enclosing directory package="cargo-mutants-test" package_dir="/tmp/.tmpDUvKke"
[INFO] [stdout]     DEBUG walk_builder=WalkBuilder { paths: ["/tmp/.tmpDUvKke"], 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-.tmpDUvKke-Djw7zm.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-2026-01-20-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=107.411294ms
[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/.tmpDUvKke"`
[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-2026-01-20-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/.tmpDUvKke/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/.tmpDUvKke/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/.tmpDUvKke/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/.tmpDUvKke\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-test}: walk package manifest_path=/tmp/.tmpDUvKke/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/.tmpDUvKke/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/.tmpDUvKke/Cargo.toml\"
[INFO] [stdout] DEBUG Resolved auto package filter based on enclosing directory package=\"cargo-mutants-test\" package_dir=\"/tmp/.tmpDUvKke\"
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/.tmpDUvKke\"], 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-.tmpDUvKke-Djw7zm.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-2026-01-20-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=107.411294ms
[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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e7f84 - assert_cmd::assert::Assert::stderr::hea81fa6b1e0eeeef
[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:     0x5a572b1cf95d - main::unexpected_nextest_error_code_causes_a_warning::hbfa7f310f5d19dd0
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1295:10
[INFO] [stdout]   25:     0x5a572b1cfc37 - main::unexpected_nextest_error_code_causes_a_warning::{{closure}}::h5a5bb40b7acbcca5
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1256:52
[INFO] [stdout]   26:     0x5a572b230c36 - core::ops::function::FnOnce::call_once::he92d5fff4e83e215
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (5949) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-9cjcRG" "-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-2026-01-20-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-9cjcRG-wog3SS.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 1.77s
[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:     0x60df5b19c6fa - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x60df5b19c6fa - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x60df5b176b54 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x60df5b176b54 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x60df5b17a412 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x60df5b17a412 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x60df5b17a412 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x60df5b17a412 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x60df5b17a412 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x60df5b17a412 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x60df5b17a412 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x60df5b1bb2cf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x60df5b1bb2cf - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7aae8cce4aa4 - <unknown>
[INFO] [stdout]   45:     0x7aae8cd71a64 - 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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1a2875 - main::warn_about_too_many_jobs::h61aa81d42122c976
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1666:10
[INFO] [stdout]   25:     0x5a572b1a28f7 - main::warn_about_too_many_jobs::{{closure}}::h86aa238003ac5c43
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:1654:30
[INFO] [stdout]   26:     0x5a572b22f236 - core::ops::function::FnOnce::call_once::h4a56c91ec7a87c82
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (4606) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-KZiSUt" && "/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-2026-01-20-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-KZiSUt-u90NSg.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1b9474 - main::proc_macro_tree_is_well_tested::hf11bafc4bfe96287
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:316:10
[INFO] [stdout]   25:     0x5a572b1b9567 - main::proc_macro_tree_is_well_tested::{{closure}}::h3d72f45f32146dfe
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:309:36
[INFO] [stdout]   26:     0x5a572b22ee66 - core::ops::function::FnOnce::call_once::h27af8adc36e9b797
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (5207) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-yR7VgE" && 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-2026-01-20-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-yR7VgE-K2yfXr.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stderr] error: test failed, to rerun pass `--test main`
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1d78ae - main::strict_warnings_about_unused_variables_are_disabled_so_mutants_compile::h661650dbd6bc73fa
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:989:10
[INFO] [stdout]   25:     0x5a572b1d7a37 - main::strict_warnings_about_unused_variables_are_disabled_so_mutants_compile::{{closure}}::h5ba12fde4908057a
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:980:76
[INFO] [stdout]   26:     0x5a572b22f136 - core::ops::function::FnOnce::call_once::h3b5ddc322e0b98dd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (5788) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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 10s build
[INFO] [stdout] │   
[INFO] [stdout] │   *** baseline
[INFO] [stdout] │   
[INFO] [stdout] │   *** /opt/rustwide/rustup-home/toolchains/beta-2026-01-20-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-a9d67a-nOFPEy.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 10s build
[INFO] [stdout]     
[INFO] [stdout]     *** baseline
[INFO] [stdout]     
[INFO] [stdout]     *** /opt/rustwide/rustup-home/toolchains/beta-2026-01-20-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-a9d67a-nOFPEy.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-a9d67a" && 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 10s build
[INFO] [stdout] 
[INFO] [stdout] *** baseline
[INFO] [stdout] 
[INFO] [stdout] *** /opt/rustwide/rustup-home/toolchains/beta-2026-01-20-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-a9d67a-nOFPEy.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e812e - assert_cmd::assert::Assert::stdout::h11f9408db559535f
[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:     0x5a572b1c7407 - main::timeout_when_unmutated_tree_test_hangs::h8392d0d95a665cc0
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:676:10
[INFO] [stdout]   25:     0x5a572b1c7527 - main::timeout_when_unmutated_tree_test_hangs::{{closure}}::h9c89561d781d5eba
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:666:44
[INFO] [stdout]   26:     0x5a572b22eb36 - core::ops::function::FnOnce::call_once::h101e50b37cf87348
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (5844) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-lV501S"`
[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-2026-01-20-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-lV501S-SWpmqr.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b1e7f84 - assert_cmd::assert::Assert::stderr::hea81fa6b1e0eeeef
[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:     0x5a572b1c1899 - main::tree_fails_without_needed_feature::h5c497a198c82a3e4
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3588:10
[INFO] [stdout]   25:     0x5a572b1c1917 - main::tree_fails_without_needed_feature::{{closure}}::h205713494aba8764
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:3579:39
[INFO] [stdout]   26:     0x5a572b22f9a6 - core::ops::function::FnOnce::call_once::h7b87d05b872fe047
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (5885) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-xVMQwO/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-with-child-directories}: walk package manifest_path=/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/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-xVMQwO/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/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-xVMQwO\"
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO\"], 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-xVMQwO-5JyLL2.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-2026-01-20-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=11.434828282s
[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-xVMQwO" "-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-2026-01-20-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-xVMQwO-5JyLL2.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-xVMQwO/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/Cargo.toml\"
[INFO] [stdout] DEBUG Find workspace metadata manifest_path=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/Cargo.toml\"
[INFO] [stdout] DEBUG Found workspace root workspace_root=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO\"
[INFO] [stdout] DEBUG package{name=cargo-mutants-testdata-with-child-directories}: walk package manifest_path=/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/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-xVMQwO/Cargo.toml\"}
[INFO] [stdout] DEBUG Found workspace root manifest cargo_toml_path=\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO/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-xVMQwO\"
[INFO] [stdout] DEBUG walk_builder=WalkBuilder { paths: [\"/tmp/cargo-mutants-testdata-with_child_directories-xVMQwO\"], 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-xVMQwO-5JyLL2.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-2026-01-20-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=11.434828282s
[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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1ca206 - main::tree_with_child_directories_is_well_tested::haf81900974ec9510
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:147:10
[INFO] [stdout]   25:     0x5a572b1caf47 - main::tree_with_child_directories_is_well_tested::{{closure}}::hf5ba3bb1532df49e
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:139:48
[INFO] [stdout]   26:     0x5a572b22eff6 - core::ops::function::FnOnce::call_once::h3034fc5fd398a035
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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' (6078) panicked at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/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-7swbvO"`
[INFO] [stdout] code=4
[INFO] [stdout] stdout=```
[INFO] [stdout] Found 12 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-2026-01-20-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-7swbvO-Gttp5Y.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:     0x5a572b7d5602 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5a572b7d5602 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5a572b7d5602 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5a572b7d5602 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5a572b7e791a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5a572b7e791a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5a572b79d646 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5a572b79d646 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5a572b7b1b29 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5a572b7b1b29 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5a572b7b19c1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5a572b26f27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5a572b26f27e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5a572b7b1da2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5a572b7b1da2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5a572b7b1be8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5a572b7ab989 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5a572b790edd - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5a572b7f17fc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5a572b29aa58 - core::panicking::panic_display::hf5f275dd87452af2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x5a572b28f1e7 - assert_cmd::assert::AssertError::panic::h152a037f58fa8412
[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:     0x5a572b297a67 - core::ops::function::FnOnce::call_once::h5f44efe39456d774
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x5a572b2947e4 - core::result::Result<T,E>::unwrap_or_else::hddb84bcd53805e53
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1622:23
[INFO] [stdout]   23:     0x5a572b2900f0 - assert_cmd::assert::Assert::success::h31a1fbc1c958e5e0
[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:     0x5a572b1b0ec4 - main::workspace_tree_is_well_tested::hc3bf9b69421341ee
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2759:10
[INFO] [stdout]   25:     0x5a572b1b47a7 - main::workspace_tree_is_well_tested::{{closure}}::hf89b9a21d97764ce
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/main.rs:2753:35
[INFO] [stdout]   26:     0x5a572b22eea6 - core::ops::function::FnOnce::call_once::h2964ac49b902b4fd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5a572b26f07b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5a572b26f07b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   29:     0x5a572b282a4a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   30:     0x5a572b282a4a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   31:     0x5a572b282a4a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   32:     0x5a572b282a4a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   33:     0x5a572b282a4a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   34:     0x5a572b282a4a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   35:     0x5a572b282a4a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   36:     0x5a572b25cea4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   37:     0x5a572b25cea4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   38:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   39:     0x5a572b260762 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   40:     0x5a572b260762 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   41:     0x5a572b260762 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   42:     0x5a572b260762 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   43:     0x5a572b260762 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   44:     0x5a572b260762 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   45:     0x5a572b7a631f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   46:     0x5a572b7a631f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   47:     0x7a67fd918aa4 - <unknown>
[INFO] [stdout]   48:     0x7a67fd9a5a64 - 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]     jobs_option_accepted_and_causes_multiple_threads
[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. 107 passed; 29 failed; 0 ignored; 0 measured; 0 filtered out; finished in 54.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "26ff0b4c8d67ee2f7d33808ffb5bc26cf98b059bc9a6d8cd634481d067aa7ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26ff0b4c8d67ee2f7d33808ffb5bc26cf98b059bc9a6d8cd634481d067aa7ca1", kill_on_drop: false }`
[INFO] [stdout] 26ff0b4c8d67ee2f7d33808ffb5bc26cf98b059bc9a6d8cd634481d067aa7ca1
