Dec 19 20:38:48.208 INFO checking alice/aoc against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:38:48.208 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/alice/aoc:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:38:48.576 INFO [stdout] 6bc08ac0ad7f5247cea37467bdfa9b38079039ac144bb43b9b0e1a26a964823c
Dec 19 20:38:48.582 INFO running `"docker" "start" "-a" "6bc08ac0ad7f5247cea37467bdfa9b38079039ac144bb43b9b0e1a26a964823c"`
Dec 19 20:38:50.256 INFO [stderr]    Compiling ndarray v0.11.0
Dec 19 20:38:50.256 INFO [stderr]     Checking num-complex v0.1.41
Dec 19 20:38:50.256 INFO [stderr]     Checking itertools v0.7.4
Dec 19 20:39:00.144 INFO [stderr]     Checking advent_game v0.1.0 (/opt/crater/workdir)
Dec 19 20:39:00.630 INFO [stderr] warning: variable does not need to be mutable
Dec 19 20:39:00.630 INFO [stderr]   --> src/main.rs:28:9
Dec 19 20:39:00.630 INFO [stderr]    |
Dec 19 20:39:00.630 INFO [stderr] 28 |     let mut current_size: usize = START_SIZE;
Dec 19 20:39:00.630 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 20:39:00.630 INFO [stderr]    |         |
Dec 19 20:39:00.630 INFO [stderr]    |         help: remove this `mut`
Dec 19 20:39:00.630 INFO [stderr]    |
Dec 19 20:39:00.630 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 20:39:00.630 INFO [stderr] 
Dec 19 20:39:00.630 INFO [stderr] warning: variable does not need to be mutable
Dec 19 20:39:00.630 INFO [stderr]   --> src/main.rs:34:13
Dec 19 20:39:00.630 INFO [stderr]    |
Dec 19 20:39:00.630 INFO [stderr] 34 |         let mut current_view = grid.slice(s![0..current_size, 0..current_size]);
Dec 19 20:39:00.630 INFO [stderr]    |             ----^^^^^^^^^^^^
Dec 19 20:39:00.630 INFO [stderr]    |             |
Dec 19 20:39:00.630 INFO [stderr]    |             help: remove this `mut`
Dec 19 20:39:00.630 INFO [stderr] 
Dec 19 20:39:00.880 INFO [stderr] warning: variable does not need to be mutable
Dec 19 20:39:00.880 INFO [stderr]   --> src/main.rs:28:9
Dec 19 20:39:00.880 INFO [stderr]    |
Dec 19 20:39:00.880 INFO [stderr] 28 |     let mut current_size: usize = START_SIZE;
Dec 19 20:39:00.880 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 20:39:00.880 INFO [stderr]    |         |
Dec 19 20:39:00.880 INFO [stderr]    |         help: remove this `mut`
Dec 19 20:39:00.880 INFO [stderr]    |
Dec 19 20:39:00.880 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 20:39:00.880 INFO [stderr] 
Dec 19 20:39:00.880 INFO [stderr] warning: variable does not need to be mutable
Dec 19 20:39:00.880 INFO [stderr]   --> src/main.rs:34:13
Dec 19 20:39:00.880 INFO [stderr]    |
Dec 19 20:39:00.880 INFO [stderr] 34 |         let mut current_view = grid.slice(s![0..current_size, 0..current_size]);
Dec 19 20:39:00.880 INFO [stderr]    |             ----^^^^^^^^^^^^
Dec 19 20:39:00.880 INFO [stderr]    |             |
Dec 19 20:39:00.880 INFO [stderr]    |             help: remove this `mut`
Dec 19 20:39:00.880 INFO [stderr] 
Dec 19 20:39:00.910 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.77s
Dec 19 20:39:02.188 INFO running `"docker" "inspect" "6bc08ac0ad7f5247cea37467bdfa9b38079039ac144bb43b9b0e1a26a964823c"`
Dec 19 20:39:02.526 INFO running `"docker" "rm" "-f" "6bc08ac0ad7f5247cea37467bdfa9b38079039ac144bb43b9b0e1a26a964823c"`
Dec 19 20:39:02.856 INFO [stdout] 6bc08ac0ad7f5247cea37467bdfa9b38079039ac144bb43b9b0e1a26a964823c