Dec 17 11:23:50.322 INFO checking ymmtmdk/shadow_cost_rust against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 11:23:50.323 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/ymmtmdk/shadow_cost_rust:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 11:23:50.788 INFO [stdout] d12c8612e7b4715897a5db862381c8fe937ef647eeb53e7ec86381f1ce06bd43
Dec 17 11:23:50.794 INFO running `"docker" "start" "-a" "d12c8612e7b4715897a5db862381c8fe937ef647eeb53e7ec86381f1ce06bd43"`
Dec 17 11:23:52.393 INFO [stderr]     Checking shadow_cost_rust v0.1.0 (/opt/crater/workdir)
Dec 17 11:23:52.863 INFO [stderr] warning: variable does not need to be mutable
Dec 17 11:23:52.863 INFO [stderr]    --> src/lib.rs:294:17
Dec 17 11:23:52.863 INFO [stderr]     |
Dec 17 11:23:52.863 INFO [stderr] 294 |             let mut t = self.cache.get_mut(key).unwrap();
Dec 17 11:23:52.863 INFO [stderr]     |                 ----^
Dec 17 11:23:52.863 INFO [stderr]     |                 |
Dec 17 11:23:52.863 INFO [stderr]     |                 help: remove this `mut`
Dec 17 11:23:52.863 INFO [stderr]     |
Dec 17 11:23:52.863 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 11:23:52.863 INFO [stderr] 
Dec 17 11:23:53.112 INFO [stderr] warning: variable does not need to be mutable
Dec 17 11:23:53.112 INFO [stderr]    --> src/lib.rs:294:17
Dec 17 11:23:53.112 INFO [stderr]     |
Dec 17 11:23:53.112 INFO [stderr] 294 |             let mut t = self.cache.get_mut(key).unwrap();
Dec 17 11:23:53.112 INFO [stderr]     |                 ----^
Dec 17 11:23:53.112 INFO [stderr]     |                 |
Dec 17 11:23:53.112 INFO [stderr]     |                 help: remove this `mut`
Dec 17 11:23:53.112 INFO [stderr]     |
Dec 17 11:23:53.112 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 11:23:53.112 INFO [stderr] 
Dec 17 11:23:53.304 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
Dec 17 11:23:54.146 INFO running `"docker" "inspect" "d12c8612e7b4715897a5db862381c8fe937ef647eeb53e7ec86381f1ce06bd43"`
Dec 17 11:23:54.447 INFO running `"docker" "rm" "-f" "d12c8612e7b4715897a5db862381c8fe937ef647eeb53e7ec86381f1ce06bd43"`
Dec 17 11:23:54.764 INFO [stdout] d12c8612e7b4715897a5db862381c8fe937ef647eeb53e7ec86381f1ce06bd43