[INFO] fetching crate difftastic 0.8.0...
[INFO] testing difftastic-0.8.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate difftastic 0.8.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate difftastic 0.8.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate difftastic 0.8.0
[INFO] finished tweaking crates.io crate difftastic 0.8.0
[INFO] tweaked toml for crates.io crate difftastic 0.8.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate difftastic 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tree-sitter v0.19.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41b55f4175c20bd5696cfff1d410c51739c2b91dfeec5819c7d083fc498ffab3
[INFO] running `Command { std: "docker" "start" "-a" "41b55f4175c20bd5696cfff1d410c51739c2b91dfeec5819c7d083fc498ffab3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41b55f4175c20bd5696cfff1d410c51739c2b91dfeec5819c7d083fc498ffab3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41b55f4175c20bd5696cfff1d410c51739c2b91dfeec5819c7d083fc498ffab3", kill_on_drop: false }`
[INFO] [stdout] 41b55f4175c20bd5696cfff1d410c51739c2b91dfeec5819c7d083fc498ffab3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dca26636b7c63a44c47e5c48a46b1ba6e74c3e8ca456746fed59eee1b24e60e0
[INFO] running `Command { std: "docker" "start" "-a" "dca26636b7c63a44c47e5c48a46b1ba6e74c3e8ca456746fed59eee1b24e60e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling tree-sitter v0.19.5
[INFO] [stderr]    Compiling difftastic v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.71s
[INFO] running `Command { std: "docker" "inspect" "dca26636b7c63a44c47e5c48a46b1ba6e74c3e8ca456746fed59eee1b24e60e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dca26636b7c63a44c47e5c48a46b1ba6e74c3e8ca456746fed59eee1b24e60e0", kill_on_drop: false }`
[INFO] [stdout] dca26636b7c63a44c47e5c48a46b1ba6e74c3e8ca456746fed59eee1b24e60e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 086448531c4482f854dcd990b53f10462334b5c46c9c2435e378f03f87580a99
[INFO] running `Command { std: "docker" "start" "-a" "086448531c4482f854dcd990b53f10462334b5c46c9c2435e378f03f87580a99", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stderr]    Compiling difftastic v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.71s
[INFO] running `Command { std: "docker" "inspect" "086448531c4482f854dcd990b53f10462334b5c46c9c2435e378f03f87580a99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "086448531c4482f854dcd990b53f10462334b5c46c9c2435e378f03f87580a99", kill_on_drop: false }`
[INFO] [stdout] 086448531c4482f854dcd990b53f10462334b5c46c9c2435e378f03f87580a99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4e5286251f3c8af578a7bab7242863daeb659051c9958af41ae527d966a9bd69
[INFO] running `Command { std: "docker" "start" "-a" "4e5286251f3c8af578a7bab7242863daeb659051c9958af41ae527d966a9bd69", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/difftastic-361ca7454089472b)
[INFO] [stdout] 
[INFO] [stdout] running 55 tests
[INFO] [stdout] test dijkstra::tests::atom_after_novel_list_contiguous ... ok
[INFO] [stdout] test dijkstra::tests::atom_after_empty_list ... ok
[INFO] [stdout] test dijkstra::tests::extra_atom_lhs ... ok
[INFO] [stdout] test dijkstra::tests::identical_atoms ... ok
[INFO] [stdout] test dijkstra::tests::mark_syntax_different_atoms ... ok
[INFO] [stdout] test dijkstra::tests::replace_similar_comment ... ok
[INFO] [stdout] test lines::tests::empty_str_max_line ... ok
[INFO] [stdout] test lines::tests::enforce_length_short ... ok
[INFO] [stdout] test dijkstra::tests::repeated_atoms ... ok
[INFO] [stdout] test dijkstra::tests::replace_very_different_comment ... ok
[INFO] [stdout] test dijkstra::tests::mark_syntax_equal_atoms ... ok
[INFO] [stdout] test dijkstra::tests::prefer_atoms_same_line ... ok
[INFO] [stdout] test dijkstra::tests::prefer_children_same_line ... ok
[INFO] [stdout] test lines::tests::codepoint_len_non_ascii ... ok
[INFO] [stdout] test lines::tests::enforce_length_long ... ok
[INFO] [stdout] test dijkstra::tests::replace_comment_prefer_most_similar ... ok
[INFO] [stdout] test dijkstra::tests::test_novel_tree ... ok
[INFO] [stdout] test line_parser::tests::test_parse_lines ... ok
[INFO] [stdout] test lines::tests::from_offsets_first_char ... ok
[INFO] [stdout] test lines::tests::from_offsets_first_line ... ok
[INFO] [stdout] test lines::tests::from_offsets_relative_to ... ok
[INFO] [stdout] test lines::tests::from_offsets_split_over_multiple_lines ... ok
[INFO] [stdout] test lines::tests::line_group_uses_interval_correctly ... ok
[INFO] [stdout] test lines::tests::test_visible_groups_ignores_unchanged ... ok
[INFO] [stdout] test lines::tests::str_max_line ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_empty_list ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_comment ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_empty_string ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_integer_with_whitespace ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_integer ... ok
[INFO] [stdout] test syntax::tests::test_aligned_line_overlap ... ok
[INFO] [stdout] test syntax::tests::test_aligned_middle ... ok
[INFO] [stdout] test syntax::tests::test_aligned_none ... ok
[INFO] [stdout] test syntax::tests::test_aligned_out_of_order ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_string_escaped_backlash_and_second_string ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_multiline_comment ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_parens ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_symbol ... ok
[INFO] [stdout] test syntax::tests::test_aligned_all ... ok
[INFO] [stdout] test syntax::tests::test_aligned_first_line ... ok
[INFO] [stdout] test syntax::tests::test_aligned_out_of_range ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_string_escaped_doublequote ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_string_escaped_backlash ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_multiline_string ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_list ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_object ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_string ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_list_with_commas ... ok
[INFO] [stdout] test syntax::tests::test_atom_equality_ignores_change ... ok
[INFO] [stdout] test regex_parser::tests::test_parse_multiple ... ok
[INFO] [stdout] test syntax::tests::test_comment_and_atom_differ ... ok
[INFO] [stdout] test syntax::tests::test_multiline_comment_ignores_leading_whitespace ... ok
[INFO] [stdout] test syntax::tests::test_prev_opposite_pos_first_node ... ok
[INFO] [stdout] test tree_sitter_parser::tests::test_parse ... ok
[INFO] [stdout] test syntax::tests::test_split_comment_words_basic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 55 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4e5286251f3c8af578a7bab7242863daeb659051c9958af41ae527d966a9bd69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e5286251f3c8af578a7bab7242863daeb659051c9958af41ae527d966a9bd69", kill_on_drop: false }`
[INFO] [stdout] 4e5286251f3c8af578a7bab7242863daeb659051c9958af41ae527d966a9bd69