Dec 11 13:31:20.971 INFO checking miyamofigo/lzw against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:31:20.971 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 13:31:21.440 INFO [stdout] 0916cff6451b3d77dda94640c39e0cdf49add70ff62520f6a629edf95cc76b7b
Dec 11 13:31:21.442 INFO running `"docker" "start" "-a" "0916cff6451b3d77dda94640c39e0cdf49add70ff62520f6a629edf95cc76b7b"`
Dec 11 13:31:22.533 INFO [stderr] usermod: no changes
Dec 11 13:31:22.593 INFO [stderr]     Checking lzw v0.1.0 (/source)
Dec 11 13:31:22.992 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:22.992 INFO [stderr]    --> src/main.rs:115:9
Dec 11 13:31:22.992 INFO [stderr]     |
Dec 11 13:31:22.992 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 11 13:31:22.992 INFO [stderr]     |         ----^^^^
Dec 11 13:31:22.992 INFO [stderr]     |         |
Dec 11 13:31:22.992 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:22.992 INFO [stderr]     |
Dec 11 13:31:22.992 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 13:31:22.992 INFO [stderr] 
Dec 11 13:31:22.992 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:22.992 INFO [stderr]    --> src/main.rs:119:9
Dec 11 13:31:22.992 INFO [stderr]     |
Dec 11 13:31:22.992 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 11 13:31:22.992 INFO [stderr]     |         ----^^^^^
Dec 11 13:31:22.992 INFO [stderr]     |         |
Dec 11 13:31:22.992 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:22.992 INFO [stderr] 
Dec 11 13:31:23.048 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:23.048 INFO [stderr]    --> src/main.rs:115:9
Dec 11 13:31:23.048 INFO [stderr]     |
Dec 11 13:31:23.048 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 11 13:31:23.048 INFO [stderr]     |         ----^^^^
Dec 11 13:31:23.048 INFO [stderr]     |         |
Dec 11 13:31:23.048 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:23.048 INFO [stderr]     |
Dec 11 13:31:23.048 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 13:31:23.048 INFO [stderr] 
Dec 11 13:31:23.048 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:23.048 INFO [stderr]    --> src/main.rs:119:9
Dec 11 13:31:23.048 INFO [stderr]     |
Dec 11 13:31:23.048 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 11 13:31:23.048 INFO [stderr]     |         ----^^^^^
Dec 11 13:31:23.048 INFO [stderr]     |         |
Dec 11 13:31:23.048 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:23.048 INFO [stderr] 
Dec 11 13:31:23.068 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 11 13:31:23.068 INFO [stderr] su: No module specific data is present
Dec 11 13:31:23.527 INFO running `"docker" "inspect" "0916cff6451b3d77dda94640c39e0cdf49add70ff62520f6a629edf95cc76b7b"`
Dec 11 13:31:23.670 INFO running `"docker" "rm" "-f" "0916cff6451b3d77dda94640c39e0cdf49add70ff62520f6a629edf95cc76b7b"`
Dec 11 13:31:23.798 INFO [stdout] 0916cff6451b3d77dda94640c39e0cdf49add70ff62520f6a629edf95cc76b7b