Dec 11 13:31:20.213 INFO checking miyamofigo/lzw against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 13:31:20.213 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 13:31:20.756 INFO [stdout] 416bb8f6553cb9a7857d89f7dad8115e7ce63971f404b5c0d058e42d06fb5cf2
Dec 11 13:31:20.762 INFO running `"docker" "start" "-a" "416bb8f6553cb9a7857d89f7dad8115e7ce63971f404b5c0d058e42d06fb5cf2"`
Dec 11 13:31:21.781 INFO [stderr] usermod: no changes
Dec 11 13:31:21.861 INFO [stderr]     Checking lzw v0.1.0 (/source)
Dec 11 13:31:22.272 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:22.272 INFO [stderr]    --> src/main.rs:115:9
Dec 11 13:31:22.272 INFO [stderr]     |
Dec 11 13:31:22.272 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 11 13:31:22.272 INFO [stderr]     |         ----^^^^
Dec 11 13:31:22.272 INFO [stderr]     |         |
Dec 11 13:31:22.272 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:22.272 INFO [stderr]     |
Dec 11 13:31:22.272 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 13:31:22.272 INFO [stderr] 
Dec 11 13:31:22.272 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:22.272 INFO [stderr]    --> src/main.rs:119:9
Dec 11 13:31:22.272 INFO [stderr]     |
Dec 11 13:31:22.272 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 11 13:31:22.272 INFO [stderr]     |         ----^^^^^
Dec 11 13:31:22.272 INFO [stderr]     |         |
Dec 11 13:31:22.272 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:22.272 INFO [stderr] 
Dec 11 13:31:22.420 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:22.420 INFO [stderr]    --> src/main.rs:115:9
Dec 11 13:31:22.420 INFO [stderr]     |
Dec 11 13:31:22.420 INFO [stderr] 115 |     let mut comp = compress("hello world");
Dec 11 13:31:22.420 INFO [stderr]     |         ----^^^^
Dec 11 13:31:22.421 INFO [stderr]     |         |
Dec 11 13:31:22.421 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:22.421 INFO [stderr]     |
Dec 11 13:31:22.421 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 13:31:22.421 INFO [stderr] 
Dec 11 13:31:22.421 INFO [stderr] warning: variable does not need to be mutable
Dec 11 13:31:22.421 INFO [stderr]    --> src/main.rs:119:9
Dec 11 13:31:22.421 INFO [stderr]     |
Dec 11 13:31:22.421 INFO [stderr] 119 |     let mut comp2 = compress("hello worldhello world");
Dec 11 13:31:22.421 INFO [stderr]     |         ----^^^^^
Dec 11 13:31:22.421 INFO [stderr]     |         |
Dec 11 13:31:22.421 INFO [stderr]     |         help: remove this `mut`
Dec 11 13:31:22.421 INFO [stderr] 
Dec 11 13:31:22.434 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
Dec 11 13:31:22.436 INFO [stderr] su: No module specific data is present
Dec 11 13:31:23.250 INFO running `"docker" "inspect" "416bb8f6553cb9a7857d89f7dad8115e7ce63971f404b5c0d058e42d06fb5cf2"`
Dec 11 13:31:23.398 INFO running `"docker" "rm" "-f" "416bb8f6553cb9a7857d89f7dad8115e7ce63971f404b5c0d058e42d06fb5cf2"`
Dec 11 13:31:23.517 INFO [stdout] 416bb8f6553cb9a7857d89f7dad8115e7ce63971f404b5c0d058e42d06fb5cf2