Dec 18 10:48:19.901 INFO checking stderr-0.8.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 10:48:19.901 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/stderr/0.8.0:/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 10:48:20.364 INFO [stdout] f534766e6f1a1e4aec73e5a2ceb0c9cefcc919f30e70fc627f76748d4459d969
Dec 18 10:48:20.370 INFO running `"docker" "start" "-a" "f534766e6f1a1e4aec73e5a2ceb0c9cefcc919f30e70fc627f76748d4459d969"`
Dec 18 10:48:21.524 INFO [stderr]     Checking stderr v0.8.0 (/opt/crater/workdir)
Dec 18 10:48:22.068 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:48:22.068 INFO [stderr]   --> src/log/mod.rs:40:13
Dec 18 10:48:22.068 INFO [stderr]    |
Dec 18 10:48:22.068 INFO [stderr] 40 |         let mut logger = LOGGER.as_mut();
Dec 18 10:48:22.068 INFO [stderr]    |             ----^^^^^^
Dec 18 10:48:22.068 INFO [stderr]    |             |
Dec 18 10:48:22.068 INFO [stderr]    |             help: remove this `mut`
Dec 18 10:48:22.068 INFO [stderr]    |
Dec 18 10:48:22.068 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 10:48:22.068 INFO [stderr] 
Dec 18 10:48:22.098 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:48:22.098 INFO [stderr]    --> src/log/mod.rs:137:13
Dec 18 10:48:22.098 INFO [stderr]     |
Dec 18 10:48:22.098 INFO [stderr] 137 |         let mut logger = LOGGER.as_mut();
Dec 18 10:48:22.098 INFO [stderr]     |             ----^^^^^^
Dec 18 10:48:22.098 INFO [stderr]     |             |
Dec 18 10:48:22.098 INFO [stderr]     |             help: remove this `mut`
Dec 18 10:48:22.098 INFO [stderr] 
Dec 18 10:48:22.128 INFO [stderr] warning: unnecessary `unsafe` block
Dec 18 10:48:22.128 INFO [stderr]   --> src/static_mut.rs:89:9
Dec 18 10:48:22.128 INFO [stderr]    |
Dec 18 10:48:22.128 INFO [stderr] 89 |         unsafe {self.0.into_inner()}
Dec 18 10:48:22.128 INFO [stderr]    |         ^^^^^^ unnecessary `unsafe` block
Dec 18 10:48:22.128 INFO [stderr]    |
Dec 18 10:48:22.128 INFO [stderr]    = note: #[warn(unused_unsafe)] on by default
Dec 18 10:48:22.128 INFO [stderr] 
Dec 18 10:48:22.684 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:48:22.684 INFO [stderr]   --> src/log/mod.rs:40:13
Dec 18 10:48:22.684 INFO [stderr]    |
Dec 18 10:48:22.684 INFO [stderr] 40 |         let mut logger = LOGGER.as_mut();
Dec 18 10:48:22.684 INFO [stderr]    |             ----^^^^^^
Dec 18 10:48:22.684 INFO [stderr]    |             |
Dec 18 10:48:22.684 INFO [stderr]    |             help: remove this `mut`
Dec 18 10:48:22.708 INFO [stderr]    |
Dec 18 10:48:22.708 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 10:48:22.708 INFO [stderr] 
Dec 18 10:48:22.764 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:48:22.764 INFO [stderr]    --> src/log/mod.rs:137:13
Dec 18 10:48:22.764 INFO [stderr]     |
Dec 18 10:48:22.764 INFO [stderr] 137 |         let mut logger = LOGGER.as_mut();
Dec 18 10:48:22.764 INFO [stderr]     |             ----^^^^^^
Dec 18 10:48:22.764 INFO [stderr]     |             |
Dec 18 10:48:22.764 INFO [stderr]     |             help: remove this `mut`
Dec 18 10:48:22.764 INFO [stderr] 
Dec 18 10:48:22.908 INFO [stderr] warning: unnecessary `unsafe` block
Dec 18 10:48:22.908 INFO [stderr]   --> src/static_mut.rs:89:9
Dec 18 10:48:22.908 INFO [stderr]    |
Dec 18 10:48:22.908 INFO [stderr] 89 |         unsafe {self.0.into_inner()}
Dec 18 10:48:22.908 INFO [stderr]    |         ^^^^^^ unnecessary `unsafe` block
Dec 18 10:48:22.908 INFO [stderr]    |
Dec 18 10:48:22.908 INFO [stderr]    = note: #[warn(unused_unsafe)] on by default
Dec 18 10:48:22.908 INFO [stderr] 
Dec 18 10:48:23.141 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
Dec 18 10:48:23.995 INFO running `"docker" "inspect" "f534766e6f1a1e4aec73e5a2ceb0c9cefcc919f30e70fc627f76748d4459d969"`
Dec 18 10:48:24.264 INFO running `"docker" "rm" "-f" "f534766e6f1a1e4aec73e5a2ceb0c9cefcc919f30e70fc627f76748d4459d969"`
Dec 18 10:48:24.475 INFO [stdout] f534766e6f1a1e4aec73e5a2ceb0c9cefcc919f30e70fc627f76748d4459d969