[INFO] fetching crate difftastic 0.12.0...
[INFO] testing difftastic-0.12.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate difftastic 0.12.0 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate difftastic 0.12.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate difftastic 0.12.0
[INFO] finished tweaking crates.io crate difftastic 0.12.0
[INFO] tweaked toml for crates.io crate difftastic 0.12.0 written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] crate crates.io crate difftastic 0.12.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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 radix-heap v0.4.0
[INFO] [stderr]   Downloaded tree-sitter v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b5d3826c5c7928ff326e3c3dfb6c79061baeaba30c3fb02351d4adb662d5da9
[INFO] running `Command { std: "docker" "start" "-a" "2b5d3826c5c7928ff326e3c3dfb6c79061baeaba30c3fb02351d4adb662d5da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b5d3826c5c7928ff326e3c3dfb6c79061baeaba30c3fb02351d4adb662d5da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b5d3826c5c7928ff326e3c3dfb6c79061baeaba30c3fb02351d4adb662d5da9", kill_on_drop: false }`
[INFO] [stdout] 2b5d3826c5c7928ff326e3c3dfb6c79061baeaba30c3fb02351d4adb662d5da9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec215b5cb717629d9d7a730d09ff90655affd1b95902cab699b776cfb25e1bb9
[INFO] running `Command { std: "docker" "start" "-a" "ec215b5cb717629d9d7a730d09ff90655affd1b95902cab699b776cfb25e1bb9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling radix-heap v0.4.0
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.22
[INFO] [stderr]    Compiling tree-sitter v0.20.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling mimalloc v0.1.26
[INFO] [stderr]    Compiling difftastic v0.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `current`
[INFO] [stdout]   --> src/dijkstra.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     current: Vertex<'a>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.02s
[INFO] running `Command { std: "docker" "inspect" "ec215b5cb717629d9d7a730d09ff90655affd1b95902cab699b776cfb25e1bb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec215b5cb717629d9d7a730d09ff90655affd1b95902cab699b776cfb25e1bb9", kill_on_drop: false }`
[INFO] [stdout] ec215b5cb717629d9d7a730d09ff90655affd1b95902cab699b776cfb25e1bb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7099c55ebc1b9f4ee2da4aa9a4143da9c9332836c67a3b3b685ddcb6027395c7
[INFO] running `Command { std: "docker" "start" "-a" "7099c55ebc1b9f4ee2da4aa9a4143da9c9332836c67a3b3b685ddcb6027395c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stdout] warning: field is never read: `current`
[INFO] [stdout]   --> src/dijkstra.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     current: Vertex<'a>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pretty_assertions v0.7.2
[INFO] [stderr]    Compiling difftastic v0.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `current`
[INFO] [stdout]   --> src/dijkstra.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     current: Vertex<'a>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "7099c55ebc1b9f4ee2da4aa9a4143da9c9332836c67a3b3b685ddcb6027395c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7099c55ebc1b9f4ee2da4aa9a4143da9c9332836c67a3b3b685ddcb6027395c7", kill_on_drop: false }`
[INFO] [stdout] 7099c55ebc1b9f4ee2da4aa9a4143da9c9332836c67a3b3b685ddcb6027395c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ca33931cdd38f2cebbdb36c2b71949664579b3893051a460aa2db3afabbeb376
[INFO] running `Command { std: "docker" "start" "-a" "ca33931cdd38f2cebbdb36c2b71949664579b3893051a460aa2db3afabbeb376", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `current`
[INFO] [stderr]   --> src/dijkstra.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     current: Vertex<'a>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `difftastic` (lib) generated 1 warning
[INFO] [stderr] warning: `difftastic` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/difftastic-a9be1803c8b91768)
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test dijkstra::tests::atom_after_empty_list ... ok
[INFO] [stdout] test dijkstra::tests::atom_after_novel_list_contiguous ... ok
[INFO] [stdout] test dijkstra::tests::identical_atoms ... ok
[INFO] [stdout] test dijkstra::tests::extra_atom_lhs ... ok
[INFO] [stdout] test dijkstra::tests::mark_syntax_different_atoms ... 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 dijkstra::tests::repeated_atoms ... ok
[INFO] [stdout] test dijkstra::tests::replace_comment_prefer_most_similar ... ok
[INFO] [stdout] test dijkstra::tests::replace_very_different_comment ... ok
[INFO] [stdout] test hunks::tests::test_sorted_novel_positions_simple ... ok
[INFO] [stdout] test dijkstra::tests::replace_similar_comment ... ok
[INFO] [stdout] test line_parser::tests::test_parse_lines ... ok
[INFO] [stdout] test lines::tests::codepoint_len_non_ascii ... ok
[INFO] [stdout] test lines::tests::empty_str_max_line ... ok
[INFO] [stdout] test dijkstra::tests::test_novel_tree ... ok
[INFO] [stdout] test lines::tests::str_max_line ... ok
[INFO] [stdout] test side_by_side::tests::test_width_calculations ... ok
[INFO] [stdout] test lines::tests::from_offsets_first_char ... ok
[INFO] [stdout] test lines::tests::from_offsets_split_over_multiple_lines ... ok
[INFO] [stdout] test syntax::tests::test_atom_equality_ignores_change ... ok
[INFO] [stdout] test syntax::tests::test_comment_and_atom_differ ... ok
[INFO] [stdout] test lines::tests::from_offsets_relative_to ... ok
[INFO] [stdout] test syntax::tests::test_multiline_comment_ignores_leading_whitespace ... ok
[INFO] [stdout] test lines::tests::from_offsets_first_line ... ok
[INFO] [stdout] test syntax::tests::test_split_words ... ok
[INFO] [stdout] test syntax::tests::test_split_comment_words_basic ... ok
[INFO] [stdout] test syntax::tests::test_split_words_treats_newline_separately ... ok
[INFO] [stdout] test tree_sitter_parser::tests::test_parse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/difft-a1732ccd5343ba40)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests difftastic
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ca33931cdd38f2cebbdb36c2b71949664579b3893051a460aa2db3afabbeb376", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca33931cdd38f2cebbdb36c2b71949664579b3893051a460aa2db3afabbeb376", kill_on_drop: false }`
[INFO] [stdout] ca33931cdd38f2cebbdb36c2b71949664579b3893051a460aa2db3afabbeb376