Dec 18 14:14:37.268 INFO checking lru2-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 14:14:37.268 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/lru2/0.1.0:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 14:14:37.427 INFO [stdout] 924617bb1b8133f7cff68973ddcac2a33daba8efcbdec709fb7ce3a8521abd0f
Dec 18 14:14:37.427 INFO running `"docker" "start" "-a" "924617bb1b8133f7cff68973ddcac2a33daba8efcbdec709fb7ce3a8521abd0f"`
Dec 18 14:14:38.060 INFO [stderr]     Checking lru2 v0.1.0 (/opt/crater/workdir)
Dec 18 14:14:38.323 INFO [stderr] warning: variable does not need to be mutable
Dec 18 14:14:38.324 INFO [stderr]   --> src/cache/mod.rs:57:13
Dec 18 14:14:38.324 INFO [stderr]    |
Dec 18 14:14:38.324 INFO [stderr] 57 |         let mut cache: &mut Register<C::LowerKey, C::Payload> = unsafe{ &mut **self.register.get(upper_key).unwrap() };
Dec 18 14:14:38.324 INFO [stderr]    |             ----^^^^^
Dec 18 14:14:38.324 INFO [stderr]    |             |
Dec 18 14:14:38.324 INFO [stderr]    |             help: remove this `mut`
Dec 18 14:14:38.324 INFO [stderr]    |
Dec 18 14:14:38.324 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 14:14:38.324 INFO [stderr] 
Dec 18 14:14:38.480 INFO [stderr] warning: variable does not need to be mutable
Dec 18 14:14:38.480 INFO [stderr]   --> src/cache/mod.rs:57:13
Dec 18 14:14:38.480 INFO [stderr]    |
Dec 18 14:14:38.480 INFO [stderr] 57 |         let mut cache: &mut Register<C::LowerKey, C::Payload> = unsafe{ &mut **self.register.get(upper_key).unwrap() };
Dec 18 14:14:38.480 INFO [stderr]    |             ----^^^^^
Dec 18 14:14:38.480 INFO [stderr]    |             |
Dec 18 14:14:38.481 INFO [stderr]    |             help: remove this `mut`
Dec 18 14:14:38.481 INFO [stderr]    |
Dec 18 14:14:38.481 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 14:14:38.481 INFO [stderr] 
Dec 18 14:14:38.524 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 18 14:14:38.826 INFO running `"docker" "inspect" "924617bb1b8133f7cff68973ddcac2a33daba8efcbdec709fb7ce3a8521abd0f"`
Dec 18 14:14:38.926 INFO running `"docker" "rm" "-f" "924617bb1b8133f7cff68973ddcac2a33daba8efcbdec709fb7ce3a8521abd0f"`
Dec 18 14:14:39.051 INFO [stdout] 924617bb1b8133f7cff68973ddcac2a33daba8efcbdec709fb7ce3a8521abd0f