Dec 04 14:02:09.180 INFO checking miyamofigo/lzw against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 14:02:09.180 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 14:02:09.731 INFO [stdout] 321813521d0a43ee0f097a968290ec634f94c61ea6594f38e40f9cd0e3d2594d
Dec 04 14:02:09.739 INFO running `"docker" "start" "-a" "321813521d0a43ee0f097a968290ec634f94c61ea6594f38e40f9cd0e3d2594d"`
Dec 04 14:02:10.735 INFO [stderr] usermod: no changes
Dec 04 14:02:10.780 INFO [stderr]     Checking lzw v0.1.0 (/source)
Dec 04 14:02:11.163 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.163 INFO [stderr]    --> src/main.rs:115:9
Dec 04 14:02:11.163 INFO [stderr]     |
Dec 04 14:02:11.163 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 04 14:02:11.163 INFO [stderr]     |         ----^^^^
Dec 04 14:02:11.163 INFO [stderr]     |         |
Dec 04 14:02:11.163 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.163 INFO [stderr]     |
Dec 04 14:02:11.163 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 14:02:11.163 INFO [stderr] 
Dec 04 14:02:11.163 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.163 INFO [stderr]    --> src/main.rs:119:9
Dec 04 14:02:11.163 INFO [stderr]     |
Dec 04 14:02:11.163 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 04 14:02:11.163 INFO [stderr]     |         ----^^^^^
Dec 04 14:02:11.163 INFO [stderr]     |         |
Dec 04 14:02:11.163 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.163 INFO [stderr] 
Dec 04 14:02:11.202 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.202 INFO [stderr]    --> src/main.rs:115:9
Dec 04 14:02:11.202 INFO [stderr]     |
Dec 04 14:02:11.202 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 04 14:02:11.202 INFO [stderr]     |         ----^^^^
Dec 04 14:02:11.202 INFO [stderr]     |         |
Dec 04 14:02:11.202 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.202 INFO [stderr]     |
Dec 04 14:02:11.202 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 14:02:11.202 INFO [stderr] 
Dec 04 14:02:11.202 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.202 INFO [stderr]    --> src/main.rs:119:9
Dec 04 14:02:11.202 INFO [stderr]     |
Dec 04 14:02:11.202 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 04 14:02:11.202 INFO [stderr]     |         ----^^^^^
Dec 04 14:02:11.202 INFO [stderr]     |         |
Dec 04 14:02:11.202 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.202 INFO [stderr] 
Dec 04 14:02:11.231 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
Dec 04 14:02:11.235 INFO [stderr] su: No module specific data is present
Dec 04 14:02:11.663 INFO running `"docker" "inspect" "321813521d0a43ee0f097a968290ec634f94c61ea6594f38e40f9cd0e3d2594d"`
Dec 04 14:02:11.894 INFO running `"docker" "rm" "-f" "321813521d0a43ee0f097a968290ec634f94c61ea6594f38e40f9cd0e3d2594d"`
Dec 04 14:02:12.139 INFO [stdout] 321813521d0a43ee0f097a968290ec634f94c61ea6594f38e40f9cd0e3d2594d