Dec 17 21:48:08.364 INFO checking k2bd/star_battle_mc_solver against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 21:48:08.364 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/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 21:48:08.533 INFO [stdout] a16d49242327e7355a8651c59c51bbaf4fcf59e599ca72a4efc7b01aa97d37ff
Dec 17 21:48:08.536 INFO running `"docker" "start" "-a" "a16d49242327e7355a8651c59c51bbaf4fcf59e599ca72a4efc7b01aa97d37ff"`
Dec 17 21:48:09.021 INFO [stderr]     Checking star_battle v0.1.0 (/opt/crater/workdir)
Dec 17 21:48:09.196 INFO [stderr] warning: unused import: `rand::Rng`
Dec 17 21:48:09.196 INFO [stderr]  --> src/main.rs:6:5
Dec 17 21:48:09.196 INFO [stderr]   |
Dec 17 21:48:09.196 INFO [stderr] 6 | use rand::Rng;
Dec 17 21:48:09.196 INFO [stderr]   |     ^^^^^^^^^
Dec 17 21:48:09.196 INFO [stderr]   |
Dec 17 21:48:09.196 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 21:48:09.196 INFO [stderr] 
Dec 17 21:48:09.209 INFO [stderr] warning: unused import: `rand::Rng`
Dec 17 21:48:09.209 INFO [stderr]  --> src/main.rs:6:5
Dec 17 21:48:09.209 INFO [stderr]   |
Dec 17 21:48:09.209 INFO [stderr] 6 | use rand::Rng;
Dec 17 21:48:09.209 INFO [stderr]   |     ^^^^^^^^^
Dec 17 21:48:09.209 INFO [stderr]   |
Dec 17 21:48:09.209 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 21:48:09.209 INFO [stderr] 
Dec 17 21:48:09.311 INFO [stderr] warning: unused variable: `regions`
Dec 17 21:48:09.311 INFO [stderr]   --> src/main.rs:92:39
Dec 17 21:48:09.311 INFO [stderr]    |
Dec 17 21:48:09.311 INFO [stderr] 92 | fn score(star_board: &Vec<Vec<bool>>, regions: &Vec<Vec<char>>, n_stars: usize) -> usize {
Dec 17 21:48:09.311 INFO [stderr]    |                                       ^^^^^^^ help: consider using `_regions` instead
Dec 17 21:48:09.311 INFO [stderr]    |
Dec 17 21:48:09.311 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 21:48:09.311 INFO [stderr] 
Dec 17 21:48:09.311 INFO [stderr] warning: unused variable: `row`
Dec 17 21:48:09.311 INFO [stderr]    --> src/main.rs:131:9
Dec 17 21:48:09.311 INFO [stderr]     |
Dec 17 21:48:09.311 INFO [stderr] 131 |     for row in board {
Dec 17 21:48:09.312 INFO [stderr]     |         ^^^ help: consider using `_row` instead
Dec 17 21:48:09.312 INFO [stderr] 
Dec 17 21:48:09.327 INFO [stderr] warning: variable does not need to be mutable
Dec 17 21:48:09.327 INFO [stderr]   --> src/main.rs:14:9
Dec 17 21:48:09.327 INFO [stderr]    |
Dec 17 21:48:09.327 INFO [stderr] 14 |     let mut filename;
Dec 17 21:48:09.327 INFO [stderr]    |         ----^^^^^^^^
Dec 17 21:48:09.327 INFO [stderr]    |         |
Dec 17 21:48:09.327 INFO [stderr]    |         help: remove this `mut`
Dec 17 21:48:09.327 INFO [stderr] warning: unused variable: `regions`
Dec 17 21:48:09.327 INFO [stderr]   --> src/main.rs:92:39
Dec 17 21:48:09.327 INFO [stderr]    |
Dec 17 21:48:09.327 INFO [stderr] 92 | fn score(star_board: &Vec<Vec<bool>>, regions: &Vec<Vec<char>>, n_stars: usize) -> usize {
Dec 17 21:48:09.327 INFO [stderr]    |                                       ^^^^^^^ help: consider using `_regions` instead
Dec 17 21:48:09.327 INFO [stderr]    |
Dec 17 21:48:09.327 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 21:48:09.327 INFO [stderr] 
Dec 17 21:48:09.327 INFO [stderr] warning: unused variable: `row`
Dec 17 21:48:09.327 INFO [stderr]    --> src/main.rs:131:9
Dec 17 21:48:09.327 INFO [stderr]     |
Dec 17 21:48:09.327 INFO [stderr] 131 |     for row in board {
Dec 17 21:48:09.327 INFO [stderr]     |         ^^^ help: consider using `_row` instead
Dec 17 21:48:09.327 INFO [stderr] 
Dec 17 21:48:09.327 INFO [stderr]    |
Dec 17 21:48:09.327 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 21:48:09.327 INFO [stderr] 
Dec 17 21:48:09.339 INFO [stderr] warning: variable does not need to be mutable
Dec 17 21:48:09.339 INFO [stderr]   --> src/main.rs:14:9
Dec 17 21:48:09.339 INFO [stderr]    |
Dec 17 21:48:09.339 INFO [stderr] 14 |     let mut filename;
Dec 17 21:48:09.339 INFO [stderr]    |         ----^^^^^^^^
Dec 17 21:48:09.339 INFO [stderr]    |         |
Dec 17 21:48:09.339 INFO [stderr]    |         help: remove this `mut`
Dec 17 21:48:09.339 INFO [stderr]    |
Dec 17 21:48:09.339 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 21:48:09.339 INFO [stderr] 
Dec 17 21:48:09.384 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
Dec 17 21:48:09.682 INFO running `"docker" "inspect" "a16d49242327e7355a8651c59c51bbaf4fcf59e599ca72a4efc7b01aa97d37ff"`
Dec 17 21:48:09.764 INFO running `"docker" "rm" "-f" "a16d49242327e7355a8651c59c51bbaf4fcf59e599ca72a4efc7b01aa97d37ff"`
Dec 17 21:48:09.865 INFO [stdout] a16d49242327e7355a8651c59c51bbaf4fcf59e599ca72a4efc7b01aa97d37ff