Dec 17 21:48:08.476 INFO checking k2bd/star_battle_mc_solver against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 21:48:08.476 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 21:48:08.625 INFO [stdout] 9affe0b89901745fdb006f986e19452939cba13ac1ec168dbd4eb20f2cc82f72
Dec 17 21:48:08.628 INFO running `"docker" "start" "-a" "9affe0b89901745fdb006f986e19452939cba13ac1ec168dbd4eb20f2cc82f72"`
Dec 17 21:48:09.237 INFO [stderr]     Checking star_battle v0.1.0 (/opt/crater/workdir)
Dec 17 21:48:09.412 INFO [stderr] warning: unused import: `rand::Rng`
Dec 17 21:48:09.412 INFO [stderr]  --> src/main.rs:6:5
Dec 17 21:48:09.412 INFO [stderr]   |
Dec 17 21:48:09.412 INFO [stderr] 6 | use rand::Rng;
Dec 17 21:48:09.412 INFO [stderr]   |     ^^^^^^^^^
Dec 17 21:48:09.412 INFO [stderr]   |
Dec 17 21:48:09.412 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 21:48:09.412 INFO [stderr] 
Dec 17 21:48:09.427 INFO [stderr] warning: unused import: `rand::Rng`
Dec 17 21:48:09.428 INFO [stderr]  --> src/main.rs:6:5
Dec 17 21:48:09.428 INFO [stderr]   |
Dec 17 21:48:09.428 INFO [stderr] 6 | use rand::Rng;
Dec 17 21:48:09.428 INFO [stderr]   |     ^^^^^^^^^
Dec 17 21:48:09.428 INFO [stderr]   |
Dec 17 21:48:09.428 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 21:48:09.428 INFO [stderr] 
Dec 17 21:48:09.496 INFO [stderr] warning: unused variable: `regions`
Dec 17 21:48:09.496 INFO [stderr]   --> src/main.rs:92:39
Dec 17 21:48:09.496 INFO [stderr]    |
Dec 17 21:48:09.496 INFO [stderr] 92 | fn score(star_board: &Vec<Vec<bool>>, regions: &Vec<Vec<char>>, n_stars: usize) -> usize {
Dec 17 21:48:09.496 INFO [stderr]    |                                       ^^^^^^^ help: consider using `_regions` instead
Dec 17 21:48:09.496 INFO [stderr]    |
Dec 17 21:48:09.496 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 21:48:09.496 INFO [stderr] 
Dec 17 21:48:09.496 INFO [stderr] warning: unused variable: `row`
Dec 17 21:48:09.496 INFO [stderr]    --> src/main.rs:131:9
Dec 17 21:48:09.496 INFO [stderr]     |
Dec 17 21:48:09.496 INFO [stderr] 131 |     for row in board {
Dec 17 21:48:09.496 INFO [stderr]     |         ^^^ help: consider using `_row` instead
Dec 17 21:48:09.496 INFO [stderr] 
Dec 17 21:48:09.508 INFO [stderr] warning: variable does not need to be mutable
Dec 17 21:48:09.508 INFO [stderr]   --> src/main.rs:14:9
Dec 17 21:48:09.508 INFO [stderr]    |
Dec 17 21:48:09.508 INFO [stderr] 14 |     let mut filename;
Dec 17 21:48:09.508 INFO [stderr]    |         ----^^^^^^^^
Dec 17 21:48:09.508 INFO [stderr]    |         |
Dec 17 21:48:09.508 INFO [stderr]    |         help: remove this `mut`
Dec 17 21:48:09.508 INFO [stderr]    |
Dec 17 21:48:09.508 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 21:48:09.508 INFO [stderr] 
Dec 17 21:48:09.511 INFO [stderr] warning: unused variable: `regions`
Dec 17 21:48:09.511 INFO [stderr]   --> src/main.rs:92:39
Dec 17 21:48:09.511 INFO [stderr]    |
Dec 17 21:48:09.511 INFO [stderr] 92 | fn score(star_board: &Vec<Vec<bool>>, regions: &Vec<Vec<char>>, n_stars: usize) -> usize {
Dec 17 21:48:09.511 INFO [stderr]    |                                       ^^^^^^^ help: consider using `_regions` instead
Dec 17 21:48:09.511 INFO [stderr]    |
Dec 17 21:48:09.511 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 21:48:09.511 INFO [stderr] 
Dec 17 21:48:09.512 INFO [stderr] warning: unused variable: `row`
Dec 17 21:48:09.512 INFO [stderr]    --> src/main.rs:131:9
Dec 17 21:48:09.512 INFO [stderr]     |
Dec 17 21:48:09.512 INFO [stderr] 131 |     for row in board {
Dec 17 21:48:09.512 INFO [stderr]     |         ^^^ help: consider using `_row` instead
Dec 17 21:48:09.512 INFO [stderr] 
Dec 17 21:48:09.524 INFO [stderr] warning: variable does not need to be mutable
Dec 17 21:48:09.524 INFO [stderr]   --> src/main.rs:14:9
Dec 17 21:48:09.524 INFO [stderr]    |
Dec 17 21:48:09.524 INFO [stderr] 14 |     let mut filename;
Dec 17 21:48:09.524 INFO [stderr]    |         ----^^^^^^^^
Dec 17 21:48:09.524 INFO [stderr]    |         |
Dec 17 21:48:09.524 INFO [stderr]    |         help: remove this `mut`
Dec 17 21:48:09.524 INFO [stderr]    |
Dec 17 21:48:09.524 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 21:48:09.524 INFO [stderr] 
Dec 17 21:48:09.545 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
Dec 17 21:48:09.818 INFO running `"docker" "inspect" "9affe0b89901745fdb006f986e19452939cba13ac1ec168dbd4eb20f2cc82f72"`
Dec 17 21:48:09.982 INFO running `"docker" "rm" "-f" "9affe0b89901745fdb006f986e19452939cba13ac1ec168dbd4eb20f2cc82f72"`
Dec 17 21:48:10.140 INFO [stdout] 9affe0b89901745fdb006f986e19452939cba13ac1ec168dbd4eb20f2cc82f72