[INFO] fetching crate difftastic_mod_for_windows 0.27.0...
[INFO] checking difftastic_mod_for_windows-0.27.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate difftastic_mod_for_windows 0.27.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate difftastic_mod_for_windows 0.27.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate difftastic_mod_for_windows 0.27.0
[INFO] finished tweaking crates.io crate difftastic_mod_for_windows 0.27.0
[INFO] tweaked toml for crates.io crate difftastic_mod_for_windows 0.27.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate difftastic_mod_for_windows 0.27.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mimalloc v0.1.27
[INFO] [stderr]   Downloaded wu-diff v0.1.2
[INFO] [stderr]   Downloaded ctor v0.1.21
[INFO] [stderr]   Downloaded any_terminal_size v0.1.21
[INFO] [stderr]   Downloaded quote v1.0.13
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.7
[INFO] [stderr]   Downloaded widestring v0.5.1
[INFO] [stderr]   Downloaded indexmap v1.8.0
[INFO] [stderr]   Downloaded owo-colors v3.2.0
[INFO] [stderr]   Downloaded pretty_assertions v1.0.0
[INFO] [stderr]   Downloaded itertools v0.10.3
[INFO] [stderr]   Downloaded rayon v1.5.1
[INFO] [stderr]   Downloaded clap v3.0.13
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.1
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.5
[INFO] [stderr]   Downloaded rayon-core v1.9.1
[INFO] [stderr]   Downloaded const_format_proc_macros v0.2.22
[INFO] [stderr]   Downloaded const_format v0.2.22
[INFO] [stderr]   Downloaded syn v1.0.84
[INFO] [stderr]   Downloaded proc-macro2 v1.0.36
[INFO] [stderr]   Downloaded rpds v0.10.0
[INFO] [stderr]   Downloaded tree-sitter v0.20.5
[INFO] [stderr]   Downloaded radix-heap v0.4.2
[INFO] [stderr]   Downloaded typed-arena v2.0.1
[INFO] [stderr]   Downloaded archery v0.4.0
[INFO] [stderr]   Downloaded libmimalloc-sys v0.1.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09a948274c8b4c314c36275b3016e34c741978fc1bdd3741bd81984d8dafdbc4
[INFO] running `Command { std: "docker" "start" "-a" "09a948274c8b4c314c36275b3016e34c741978fc1bdd3741bd81984d8dafdbc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09a948274c8b4c314c36275b3016e34c741978fc1bdd3741bd81984d8dafdbc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a948274c8b4c314c36275b3016e34c741978fc1bdd3741bd81984d8dafdbc4", kill_on_drop: false }`
[INFO] [stdout] 09a948274c8b4c314c36275b3016e34c741978fc1bdd3741bd81984d8dafdbc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c00834af17830cfafa94e0e1b509a762fa9a9e2f80818da98762509d245cdd4c
[INFO] running `Command { std: "docker" "start" "-a" "c00834af17830cfafa94e0e1b509a762fa9a9e2f80818da98762509d245cdd4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling memoffset v0.6.5
[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 proc-macro2 v1.0.36
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling quote v1.0.13
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling any_terminal_size v0.1.21
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking archery v0.4.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking rpds v0.10.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking radix-heap v0.4.2
[INFO] [stderr]     Checking wu-diff v0.1.2
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking owo-colors v3.2.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking pretty_assertions v1.0.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.23
[INFO] [stderr]    Compiling tree-sitter v0.20.5
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking clap v3.0.13
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.22
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking const_format v0.2.22
[INFO] [stderr]     Checking mimalloc v0.1.27
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling difftastic_mod_for_windows v0.27.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `LinePosition` is never constructed
[INFO] [stdout]   --> src/lines.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct LinePosition {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/guess_language.rs:96:63
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let lang = match mode_name.to_ascii_lowercase().trim().borrow() {
[INFO] [stdout]    |                                                               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/options.rs:252:31
[INFO] [stdout]     |
[INFO] [stdout] 252 |         match display_mode_str.borrow() {
[INFO] [stdout]     |                               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinePosition` is never constructed
[INFO] [stdout]   --> src/lines.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct LinePosition {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/guess_language.rs:96:63
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let lang = match mode_name.to_ascii_lowercase().trim().borrow() {
[INFO] [stdout]    |                                                               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/options.rs:252:31
[INFO] [stdout]     |
[INFO] [stdout] 252 |         match display_mode_str.borrow() {
[INFO] [stdout]     |                               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.68s
[INFO] running `Command { std: "docker" "inspect" "c00834af17830cfafa94e0e1b509a762fa9a9e2f80818da98762509d245cdd4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c00834af17830cfafa94e0e1b509a762fa9a9e2f80818da98762509d245cdd4c", kill_on_drop: false }`
[INFO] [stdout] c00834af17830cfafa94e0e1b509a762fa9a9e2f80818da98762509d245cdd4c