Dec 17 16:55:14.929 INFO checking rmirabelli/lexer against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 16:55:14.929 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/rmirabelli/lexer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 16:55:15.392 INFO [stdout] cd6c4f950f4bf6c376833c093b70238b64292f81910084956ca4834d6e6881f0
Dec 17 16:55:15.400 INFO running `"docker" "start" "-a" "cd6c4f950f4bf6c376833c093b70238b64292f81910084956ca4834d6e6881f0"`
Dec 17 16:55:17.709 INFO [stderr]     Checking lexer v0.1.0 (/opt/crater/workdir)
Dec 17 16:55:18.134 INFO [stderr] warning: variable does not need to be mutable
Dec 17 16:55:18.134 INFO [stderr]   --> src/lib.rs:82:13
Dec 17 16:55:18.134 INFO [stderr]    |
Dec 17 16:55:18.134 INFO [stderr] 82 |         let mut x = tokenize("(+ 33(+ 4 5))");
Dec 17 16:55:18.134 INFO [stderr]    |             ----^
Dec 17 16:55:18.134 INFO [stderr]    |             |
Dec 17 16:55:18.134 INFO [stderr]    |             help: remove this `mut`
Dec 17 16:55:18.135 INFO [stderr]    |
Dec 17 16:55:18.135 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 16:55:18.135 INFO [stderr] 
Dec 17 16:55:18.413 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Dec 17 16:55:19.772 INFO running `"docker" "inspect" "cd6c4f950f4bf6c376833c093b70238b64292f81910084956ca4834d6e6881f0"`
Dec 17 16:55:20.048 INFO running `"docker" "rm" "-f" "cd6c4f950f4bf6c376833c093b70238b64292f81910084956ca4834d6e6881f0"`
Dec 17 16:55:20.336 INFO [stdout] cd6c4f950f4bf6c376833c093b70238b64292f81910084956ca4834d6e6881f0