Dec 17 19:32:53.729 INFO checking miyamofigo/lzw against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:32:53.730 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/miyamofigo/lzw:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:32:53.969 INFO [stdout] 06f941f452bd7e72a893d7bea572d955d3164911049e648e680fb602c6e5eaac
Dec 17 19:32:53.971 INFO running `"docker" "start" "-a" "06f941f452bd7e72a893d7bea572d955d3164911049e648e680fb602c6e5eaac"`
Dec 17 19:32:55.266 INFO [stderr]     Checking lzw v0.1.0 (/opt/crater/workdir)
Dec 17 19:32:55.708 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:32:55.708 INFO [stderr]    --> src/main.rs:115:9
Dec 17 19:32:55.708 INFO [stderr]     |
Dec 17 19:32:55.708 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 17 19:32:55.708 INFO [stderr]     |         ----^^^^
Dec 17 19:32:55.708 INFO [stderr]     |         |
Dec 17 19:32:55.708 INFO [stderr]     |         help: remove this `mut`
Dec 17 19:32:55.708 INFO [stderr]     |
Dec 17 19:32:55.708 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 19:32:55.708 INFO [stderr] 
Dec 17 19:32:55.716 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:32:55.716 INFO [stderr]    --> src/main.rs:115:9
Dec 17 19:32:55.716 INFO [stderr]     |
Dec 17 19:32:55.716 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 17 19:32:55.716 INFO [stderr]     |         ----^^^^
Dec 17 19:32:55.716 INFO [stderr]     |         |
Dec 17 19:32:55.716 INFO [stderr]     |         help: remove this `mut`
Dec 17 19:32:55.716 INFO [stderr]     |
Dec 17 19:32:55.716 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 19:32:55.716 INFO [stderr] 
Dec 17 19:32:55.716 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:32:55.716 INFO [stderr]    --> src/main.rs:119:9
Dec 17 19:32:55.716 INFO [stderr]     |
Dec 17 19:32:55.716 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 17 19:32:55.716 INFO [stderr]     |         ----^^^^^
Dec 17 19:32:55.716 INFO [stderr]     |         |
Dec 17 19:32:55.716 INFO [stderr]     |         help: remove this `mut`
Dec 17 19:32:55.717 INFO [stderr] 
Dec 17 19:32:55.717 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:32:55.717 INFO [stderr]    --> src/main.rs:119:9
Dec 17 19:32:55.717 INFO [stderr]     |
Dec 17 19:32:55.717 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 17 19:32:55.717 INFO [stderr]     |         ----^^^^^
Dec 17 19:32:55.717 INFO [stderr]     |         |
Dec 17 19:32:55.717 INFO [stderr]     |         help: remove this `mut`
Dec 17 19:32:55.717 INFO [stderr] 
Dec 17 19:32:55.770 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Dec 17 19:32:56.474 INFO running `"docker" "inspect" "06f941f452bd7e72a893d7bea572d955d3164911049e648e680fb602c6e5eaac"`
Dec 17 19:32:56.662 INFO running `"docker" "rm" "-f" "06f941f452bd7e72a893d7bea572d955d3164911049e648e680fb602c6e5eaac"`
Dec 17 19:32:56.809 INFO [stdout] 06f941f452bd7e72a893d7bea572d955d3164911049e648e680fb602c6e5eaac