Dec 18 08:22:06.383 INFO checking BookOwl/advent2018 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:22:06.383 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/BookOwl/advent2018:/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 18 08:22:06.676 INFO [stdout] 00c5be324739217a65bf5a7b400622afa5dd1ff7366e6d932b9238693dc34567
Dec 18 08:22:06.678 INFO running `"docker" "start" "-a" "00c5be324739217a65bf5a7b400622afa5dd1ff7366e6d932b9238693dc34567"`
Dec 18 08:22:07.383 INFO [stderr]     Checking advent2018 v0.1.0 (/opt/crater/workdir)
Dec 18 08:22:07.755 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:22:07.755 INFO [stderr]   --> src/bin/day2.rs:48:9
Dec 18 08:22:07.755 INFO [stderr]    |
Dec 18 08:22:07.755 INFO [stderr] 48 |     let mut words = words?;
Dec 18 08:22:07.755 INFO [stderr]    |         ----^^^^^
Dec 18 08:22:07.755 INFO [stderr]    |         |
Dec 18 08:22:07.755 INFO [stderr]    |         help: remove this `mut`
Dec 18 08:22:07.755 INFO [stderr]    |
Dec 18 08:22:07.755 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:22:07.755 INFO [stderr] 
Dec 18 08:22:08.116 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:22:08.116 INFO [stderr]   --> src/bin/day2.rs:48:9
Dec 18 08:22:08.116 INFO [stderr]    |
Dec 18 08:22:08.116 INFO [stderr] 48 |     let mut words = words?;
Dec 18 08:22:08.116 INFO [stderr]    |         ----^^^^^
Dec 18 08:22:08.116 INFO [stderr]    |         |
Dec 18 08:22:08.116 INFO [stderr]    |         help: remove this `mut`
Dec 18 08:22:08.116 INFO [stderr]    |
Dec 18 08:22:08.116 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:22:08.116 INFO [stderr] 
Dec 18 08:22:08.638 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:22:08.642 INFO [stderr]   --> src/bin/day4.rs:63:21
Dec 18 08:22:08.642 INFO [stderr]    |
Dec 18 08:22:08.642 INFO [stderr] 63 |                 let mut map = sleep_times.entry(gaurd_id).or_insert_with(HashMap::new);
Dec 18 08:22:08.642 INFO [stderr]    |                     ----^^^
Dec 18 08:22:08.642 INFO [stderr]    |                     |
Dec 18 08:22:08.642 INFO [stderr]    |                     help: remove this `mut`
Dec 18 08:22:08.642 INFO [stderr]    |
Dec 18 08:22:08.642 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:22:08.642 INFO [stderr] 
Dec 18 08:22:08.656 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:22:08.656 INFO [stderr]    --> src/bin/day4.rs:105:17
Dec 18 08:22:08.656 INFO [stderr]     |
Dec 18 08:22:08.656 INFO [stderr] 105 |             let mut x = minutes.entry(i).or_insert((0, 0)); // (gaurd_id, number_of_times_asleep)
Dec 18 08:22:08.656 INFO [stderr]     |                 ----^
Dec 18 08:22:08.656 INFO [stderr]     |                 |
Dec 18 08:22:08.656 INFO [stderr]     |                 help: remove this `mut`
Dec 18 08:22:08.656 INFO [stderr] 
Dec 18 08:22:08.656 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:22:08.656 INFO [stderr]   --> src/bin/day4.rs:63:21
Dec 18 08:22:08.656 INFO [stderr]    |
Dec 18 08:22:08.656 INFO [stderr] 63 |                 let mut map = sleep_times.entry(gaurd_id).or_insert_with(HashMap::new);
Dec 18 08:22:08.656 INFO [stderr]    |                     ----^^^
Dec 18 08:22:08.656 INFO [stderr]    |                     |
Dec 18 08:22:08.656 INFO [stderr]    |                     help: remove this `mut`
Dec 18 08:22:08.656 INFO [stderr]    |
Dec 18 08:22:08.656 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:22:08.656 INFO [stderr] 
Dec 18 08:22:08.669 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:22:08.669 INFO [stderr]    --> src/bin/day4.rs:105:17
Dec 18 08:22:08.669 INFO [stderr]     |
Dec 18 08:22:08.669 INFO [stderr] 105 |             let mut x = minutes.entry(i).or_insert((0, 0)); // (gaurd_id, number_of_times_asleep)
Dec 18 08:22:08.669 INFO [stderr]     |                 ----^
Dec 18 08:22:08.669 INFO [stderr]     |                 |
Dec 18 08:22:08.672 INFO [stderr]     |                 help: remove this `mut`
Dec 18 08:22:08.672 INFO [stderr] 
Dec 18 08:22:08.703 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
Dec 18 08:22:09.044 INFO running `"docker" "inspect" "00c5be324739217a65bf5a7b400622afa5dd1ff7366e6d932b9238693dc34567"`
Dec 18 08:22:09.120 INFO running `"docker" "rm" "-f" "00c5be324739217a65bf5a7b400622afa5dd1ff7366e6d932b9238693dc34567"`
Dec 18 08:22:09.225 INFO [stdout] 00c5be324739217a65bf5a7b400622afa5dd1ff7366e6d932b9238693dc34567