Dec 19 14:40:13.927 INFO checking k2bd/star_battle_mc_solver against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:40:13.928 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/k2bd/star_battle_mc_solver:/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 14:40:14.224 INFO [stdout] 70012e00031ac2ddc7506f7faf4b663274d105edf3be0e4cbafc09c2adcf434c
Dec 19 14:40:14.230 INFO running `"docker" "start" "-a" "70012e00031ac2ddc7506f7faf4b663274d105edf3be0e4cbafc09c2adcf434c"`
Dec 19 14:40:15.574 INFO [stderr]     Checking star_battle v0.1.0 (/opt/crater/workdir)
Dec 19 14:40:15.757 INFO [stderr] warning: unused import: `rand::Rng`
Dec 19 14:40:15.757 INFO [stderr]  --> src/main.rs:6:5
Dec 19 14:40:15.757 INFO [stderr]   |
Dec 19 14:40:15.757 INFO [stderr] 6 | use rand::Rng;
Dec 19 14:40:15.757 INFO [stderr]   |     ^^^^^^^^^
Dec 19 14:40:15.757 INFO [stderr]   |
Dec 19 14:40:15.757 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 14:40:15.757 INFO [stderr] 
Dec 19 14:40:15.804 INFO [stderr] warning: unused import: `rand::Rng`
Dec 19 14:40:15.804 INFO [stderr]  --> src/main.rs:6:5
Dec 19 14:40:15.804 INFO [stderr]   |
Dec 19 14:40:15.804 INFO [stderr] 6 | use rand::Rng;
Dec 19 14:40:15.804 INFO [stderr]   |     ^^^^^^^^^
Dec 19 14:40:15.804 INFO [stderr]   |
Dec 19 14:40:15.804 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 14:40:15.804 INFO [stderr] 
Dec 19 14:40:15.900 INFO [stderr] warning: unused variable: `regions`
Dec 19 14:40:15.900 INFO [stderr]   --> src/main.rs:92:39
Dec 19 14:40:15.900 INFO [stderr]    |
Dec 19 14:40:15.900 INFO [stderr] 92 | fn score(star_board: &Vec<Vec<bool>>, regions: &Vec<Vec<char>>, n_stars: usize) -> usize {
Dec 19 14:40:15.900 INFO [stderr]    |                                       ^^^^^^^ help: consider using `_regions` instead
Dec 19 14:40:15.900 INFO [stderr]    |
Dec 19 14:40:15.908 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:40:15.908 INFO [stderr] 
Dec 19 14:40:15.908 INFO [stderr] warning: unused variable: `row`
Dec 19 14:40:15.908 INFO [stderr]    --> src/main.rs:131:9
Dec 19 14:40:15.908 INFO [stderr]     |
Dec 19 14:40:15.908 INFO [stderr] 131 |     for row in board {
Dec 19 14:40:15.908 INFO [stderr]     |         ^^^ help: consider using `_row` instead
Dec 19 14:40:15.908 INFO [stderr] 
Dec 19 14:40:15.924 INFO [stderr] warning: unused variable: `regions`
Dec 19 14:40:15.924 INFO [stderr]   --> src/main.rs:92:39
Dec 19 14:40:15.924 INFO [stderr]    |
Dec 19 14:40:15.924 INFO [stderr] 92 | fn score(star_board: &Vec<Vec<bool>>, regions: &Vec<Vec<char>>, n_stars: usize) -> usize {
Dec 19 14:40:15.924 INFO [stderr]    |                                       ^^^^^^^ help: consider using `_regions` instead
Dec 19 14:40:15.924 INFO [stderr]    |
Dec 19 14:40:15.924 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:40:15.924 INFO [stderr] 
Dec 19 14:40:15.924 INFO [stderr] warning: unused variable: `row`
Dec 19 14:40:15.924 INFO [stderr]    --> src/main.rs:131:9
Dec 19 14:40:15.924 INFO [stderr]     |
Dec 19 14:40:15.924 INFO [stderr] 131 |     for row in board {
Dec 19 14:40:15.924 INFO [stderr]     |         ^^^ help: consider using `_row` instead
Dec 19 14:40:15.924 INFO [stderr] 
Dec 19 14:40:15.924 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:40:15.924 INFO [stderr]   --> src/main.rs:14:9
Dec 19 14:40:15.924 INFO [stderr]    |
Dec 19 14:40:15.924 INFO [stderr] 14 |     let mut filename;
Dec 19 14:40:15.924 INFO [stderr]    |         ----^^^^^^^^
Dec 19 14:40:15.925 INFO [stderr]    |         |
Dec 19 14:40:15.925 INFO [stderr]    |         help: remove this `mut`
Dec 19 14:40:15.925 INFO [stderr]    |
Dec 19 14:40:15.925 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 14:40:15.925 INFO [stderr] 
Dec 19 14:40:15.937 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:40:15.937 INFO [stderr]   --> src/main.rs:14:9
Dec 19 14:40:15.937 INFO [stderr]    |
Dec 19 14:40:15.937 INFO [stderr] 14 |     let mut filename;
Dec 19 14:40:15.937 INFO [stderr]    |         ----^^^^^^^^
Dec 19 14:40:15.937 INFO [stderr]    |         |
Dec 19 14:40:15.937 INFO [stderr]    |         help: remove this `mut`
Dec 19 14:40:15.937 INFO [stderr]    |
Dec 19 14:40:15.937 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 14:40:15.937 INFO [stderr] 
Dec 19 14:40:15.985 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
Dec 19 14:40:16.612 INFO running `"docker" "inspect" "70012e00031ac2ddc7506f7faf4b663274d105edf3be0e4cbafc09c2adcf434c"`
Dec 19 14:40:16.828 INFO running `"docker" "rm" "-f" "70012e00031ac2ddc7506f7faf4b663274d105edf3be0e4cbafc09c2adcf434c"`
Dec 19 14:40:17.100 INFO [stdout] 70012e00031ac2ddc7506f7faf4b663274d105edf3be0e4cbafc09c2adcf434c