Dec 19 10:06:37.865 INFO checking rmirabelli/lexer against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:06:37.865 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:06:38.450 INFO [stdout] 266fe0860e06ce32a22c8a98aa53dc539dc6eb83c408589bf4f6d122d193faaa
Dec 19 10:06:38.452 INFO running `"docker" "start" "-a" "266fe0860e06ce32a22c8a98aa53dc539dc6eb83c408589bf4f6d122d193faaa"`
Dec 19 10:06:40.108 INFO [stderr]     Checking lexer v0.1.0 (/opt/crater/workdir)
Dec 19 10:06:40.413 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:06:40.413 INFO [stderr]   --> src/lib.rs:82:13
Dec 19 10:06:40.414 INFO [stderr]    |
Dec 19 10:06:40.414 INFO [stderr] 82 |         let mut x = tokenize("(+ 33(+ 4 5))");
Dec 19 10:06:40.414 INFO [stderr]    |             ----^
Dec 19 10:06:40.414 INFO [stderr]    |             |
Dec 19 10:06:40.415 INFO [stderr]    |             help: remove this `mut`
Dec 19 10:06:40.415 INFO [stderr]    |
Dec 19 10:06:40.415 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 10:06:40.415 INFO [stderr] 
Dec 19 10:06:40.736 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 19 10:06:42.306 INFO running `"docker" "inspect" "266fe0860e06ce32a22c8a98aa53dc539dc6eb83c408589bf4f6d122d193faaa"`
Dec 19 10:06:42.642 INFO running `"docker" "rm" "-f" "266fe0860e06ce32a22c8a98aa53dc539dc6eb83c408589bf4f6d122d193faaa"`
Dec 19 10:06:42.984 INFO [stdout] 266fe0860e06ce32a22c8a98aa53dc539dc6eb83c408589bf4f6d122d193faaa