Dec 19 09:08:06.118 INFO checking seeba8/rustsweeper against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:08:06.118 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/seeba8/rustsweeper:/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 09:08:06.700 INFO [stdout] 42ae8263f0568e7cce9af563e7e7b6a7bcbb75db79acf8f4dbbc6a63d93a0af3
Dec 19 09:08:06.704 INFO running `"docker" "start" "-a" "42ae8263f0568e7cce9af563e7e7b6a7bcbb75db79acf8f4dbbc6a63d93a0af3"`
Dec 19 09:08:08.055 INFO [stderr]     Checking rustsweeper v0.1.0 (/opt/crater/workdir)
Dec 19 09:08:08.193 INFO [stderr] warning: unused import: `std::fmt`
Dec 19 09:08:08.193 INFO [stderr]  --> src/main.rs:4:5
Dec 19 09:08:08.193 INFO [stderr]   |
Dec 19 09:08:08.193 INFO [stderr] 4 | use std::fmt;
Dec 19 09:08:08.193 INFO [stderr]   |     ^^^^^^^^
Dec 19 09:08:08.193 INFO [stderr]   |
Dec 19 09:08:08.193 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 09:08:08.193 INFO [stderr] 
Dec 19 09:08:08.200 INFO [stderr] warning: unused import: `std::fmt`
Dec 19 09:08:08.200 INFO [stderr]  --> src/main.rs:4:5
Dec 19 09:08:08.200 INFO [stderr]   |
Dec 19 09:08:08.200 INFO [stderr] 4 | use std::fmt;
Dec 19 09:08:08.200 INFO [stderr]   |     ^^^^^^^^
Dec 19 09:08:08.200 INFO [stderr]   |
Dec 19 09:08:08.200 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 09:08:08.200 INFO [stderr] 
Dec 19 09:08:08.308 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:08:08.308 INFO [stderr]   --> src/main.rs:61:13
Dec 19 09:08:08.308 INFO [stderr]    |
Dec 19 09:08:08.308 INFO [stderr] 61 |         let mut state = [[FieldState::None; 9]; 9];
Dec 19 09:08:08.308 INFO [stderr]    |             ----^^^^^
Dec 19 09:08:08.308 INFO [stderr]    |             |
Dec 19 09:08:08.308 INFO [stderr]    |             help: remove this `mut`
Dec 19 09:08:08.308 INFO [stderr]    |
Dec 19 09:08:08.308 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 09:08:08.308 INFO [stderr] 
Dec 19 09:08:08.308 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:08:08.308 INFO [stderr]   --> src/main.rs:61:13
Dec 19 09:08:08.308 INFO [stderr]    |
Dec 19 09:08:08.308 INFO [stderr] 61 |         let mut state = [[FieldState::None; 9]; 9];
Dec 19 09:08:08.308 INFO [stderr]    |             ----^^^^^
Dec 19 09:08:08.308 INFO [stderr]    |             |
Dec 19 09:08:08.308 INFO [stderr]    |             help: remove this `mut`
Dec 19 09:08:08.308 INFO [stderr]    |
Dec 19 09:08:08.308 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 09:08:08.308 INFO [stderr] 
Dec 19 09:08:08.333 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
Dec 19 09:08:08.582 INFO running `"docker" "inspect" "42ae8263f0568e7cce9af563e7e7b6a7bcbb75db79acf8f4dbbc6a63d93a0af3"`
Dec 19 09:08:08.681 INFO running `"docker" "rm" "-f" "42ae8263f0568e7cce9af563e7e7b6a7bcbb75db79acf8f4dbbc6a63d93a0af3"`
Dec 19 09:08:08.782 INFO [stdout] 42ae8263f0568e7cce9af563e7e7b6a7bcbb75db79acf8f4dbbc6a63d93a0af3