Dec 04 14:02:09.561 INFO checking miyamofigo/lzw against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:02:09.561 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 14:02:09.971 INFO [stdout] 9d3048f75c2d6bfcf75b52f85829b186cb2a2b41c570fe91cd20c7a26b0a25c5
Dec 04 14:02:09.973 INFO running `"docker" "start" "-a" "9d3048f75c2d6bfcf75b52f85829b186cb2a2b41c570fe91cd20c7a26b0a25c5"`
Dec 04 14:02:11.029 INFO [stderr] usermod: no changes
Dec 04 14:02:11.063 INFO [stderr]     Checking lzw v0.1.0 (/source)
Dec 04 14:02:11.527 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.527 INFO [stderr]    --> src/main.rs:115:9
Dec 04 14:02:11.527 INFO [stderr]     |
Dec 04 14:02:11.527 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 04 14:02:11.527 INFO [stderr]     |         ----^^^^
Dec 04 14:02:11.528 INFO [stderr]     |         |
Dec 04 14:02:11.528 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.528 INFO [stderr]     |
Dec 04 14:02:11.528 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 14:02:11.528 INFO [stderr] 
Dec 04 14:02:11.528 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.528 INFO [stderr]    --> src/main.rs:119:9
Dec 04 14:02:11.528 INFO [stderr]     |
Dec 04 14:02:11.528 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 04 14:02:11.528 INFO [stderr]     |         ----^^^^^
Dec 04 14:02:11.528 INFO [stderr]     |         |
Dec 04 14:02:11.528 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.528 INFO [stderr] 
Dec 04 14:02:11.571 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.571 INFO [stderr]    --> src/main.rs:115:9
Dec 04 14:02:11.571 INFO [stderr]     |
Dec 04 14:02:11.571 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 04 14:02:11.571 INFO [stderr]     |         ----^^^^
Dec 04 14:02:11.571 INFO [stderr]     |         |
Dec 04 14:02:11.571 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.571 INFO [stderr]     |
Dec 04 14:02:11.571 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 14:02:11.571 INFO [stderr] 
Dec 04 14:02:11.571 INFO [stderr] warning: variable does not need to be mutable
Dec 04 14:02:11.571 INFO [stderr]    --> src/main.rs:119:9
Dec 04 14:02:11.571 INFO [stderr]     |
Dec 04 14:02:11.571 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 04 14:02:11.571 INFO [stderr]     |         ----^^^^^
Dec 04 14:02:11.571 INFO [stderr]     |         |
Dec 04 14:02:11.571 INFO [stderr]     |         help: remove this `mut`
Dec 04 14:02:11.571 INFO [stderr] 
Dec 04 14:02:11.590 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Dec 04 14:02:11.591 INFO [stderr] su: No module specific data is present
Dec 04 14:02:12.139 INFO running `"docker" "inspect" "9d3048f75c2d6bfcf75b52f85829b186cb2a2b41c570fe91cd20c7a26b0a25c5"`
Dec 04 14:02:12.443 INFO running `"docker" "rm" "-f" "9d3048f75c2d6bfcf75b52f85829b186cb2a2b41c570fe91cd20c7a26b0a25c5"`
Dec 04 14:02:12.595 INFO [stdout] 9d3048f75c2d6bfcf75b52f85829b186cb2a2b41c570fe91cd20c7a26b0a25c5