Dec 19 09:49:46.219 INFO checking rufusroflpunch/sudoku against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:49:46.219 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/rufusroflpunch/sudoku:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:49:46.564 INFO [stdout] 72e429a7d19fd2205b9f097738a638a907463043daf17e42bf135cff6b29b98a
Dec 19 09:49:46.566 INFO running `"docker" "start" "-a" "72e429a7d19fd2205b9f097738a638a907463043daf17e42bf135cff6b29b98a"`
Dec 19 09:49:47.474 INFO [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
Dec 19 09:49:47.688 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:49:47.688 INFO [stderr]   --> src/main.rs:72:9
Dec 19 09:49:47.688 INFO [stderr]    |
Dec 19 09:49:47.688 INFO [stderr] 72 |     let mut puz = get_puzzle(&contents);
Dec 19 09:49:47.688 INFO [stderr]    |         ----^^^
Dec 19 09:49:47.688 INFO [stderr]    |         |
Dec 19 09:49:47.688 INFO [stderr]    |         help: remove this `mut`
Dec 19 09:49:47.688 INFO [stderr]    |
Dec 19 09:49:47.688 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 09:49:47.688 INFO [stderr] 
Dec 19 09:49:47.780 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:49:47.781 INFO [stderr]   --> src/main.rs:72:9
Dec 19 09:49:47.781 INFO [stderr]    |
Dec 19 09:49:47.781 INFO [stderr] 72 |     let mut puz = get_puzzle(&contents);
Dec 19 09:49:47.782 INFO [stderr]    |         ----^^^
Dec 19 09:49:47.782 INFO [stderr]    |         |
Dec 19 09:49:47.782 INFO [stderr]    |         help: remove this `mut`
Dec 19 09:49:47.782 INFO [stderr]    |
Dec 19 09:49:47.783 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 09:49:47.783 INFO [stderr] 
Dec 19 09:49:47.796 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
Dec 19 09:49:48.164 INFO running `"docker" "inspect" "72e429a7d19fd2205b9f097738a638a907463043daf17e42bf135cff6b29b98a"`
Dec 19 09:49:48.322 INFO running `"docker" "rm" "-f" "72e429a7d19fd2205b9f097738a638a907463043daf17e42bf135cff6b29b98a"`
Dec 19 09:49:48.544 INFO [stdout] 72e429a7d19fd2205b9f097738a638a907463043daf17e42bf135cff6b29b98a