Dec 17 15:47:22.017 INFO checking seeba8/rustsweeper against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 15:47:22.017 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 15:47:22.460 INFO [stdout] 2ca38ce2ea70b933695e22da13f46654ed8fe59b882244512dd6ffab71e1d8f4
Dec 17 15:47:22.472 INFO running `"docker" "start" "-a" "2ca38ce2ea70b933695e22da13f46654ed8fe59b882244512dd6ffab71e1d8f4"`
Dec 17 15:47:23.996 INFO [stderr]     Checking rustsweeper v0.1.0 (/opt/crater/workdir)
Dec 17 15:47:24.268 INFO [stderr] warning: unused import: `std::fmt`
Dec 17 15:47:24.268 INFO [stderr]  --> src/main.rs:4:5
Dec 17 15:47:24.268 INFO [stderr]   |
Dec 17 15:47:24.268 INFO [stderr] 4 | use std::fmt;
Dec 17 15:47:24.268 INFO [stderr]   |     ^^^^^^^^
Dec 17 15:47:24.268 INFO [stderr]   |
Dec 17 15:47:24.268 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 15:47:24.268 INFO [stderr] 
Dec 17 15:47:24.408 INFO [stderr] warning: variable does not need to be mutable
Dec 17 15:47:24.408 INFO [stderr]   --> src/main.rs:61:13
Dec 17 15:47:24.408 INFO [stderr]    |
Dec 17 15:47:24.408 INFO [stderr] 61 |         let mut state = [[FieldState::None; 9]; 9];
Dec 17 15:47:24.408 INFO [stderr]    |             ----^^^^^
Dec 17 15:47:24.408 INFO [stderr]    |             |
Dec 17 15:47:24.408 INFO [stderr]    |             help: remove this `mut`
Dec 17 15:47:24.408 INFO [stderr]    |
Dec 17 15:47:24.408 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 15:47:24.408 INFO [stderr] 
Dec 17 15:47:24.408 INFO [stderr] warning: unused import: `std::fmt`
Dec 17 15:47:24.408 INFO [stderr]  --> src/main.rs:4:5
Dec 17 15:47:24.408 INFO [stderr]   |
Dec 17 15:47:24.408 INFO [stderr] 4 | use std::fmt;
Dec 17 15:47:24.408 INFO [stderr]   |     ^^^^^^^^
Dec 17 15:47:24.408 INFO [stderr]   |
Dec 17 15:47:24.408 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 15:47:24.408 INFO [stderr] 
Dec 17 15:47:24.540 INFO [stderr] warning: variable does not need to be mutable
Dec 17 15:47:24.540 INFO [stderr]   --> src/main.rs:61:13
Dec 17 15:47:24.540 INFO [stderr]    |
Dec 17 15:47:24.540 INFO [stderr] 61 |         let mut state = [[FieldState::None; 9]; 9];
Dec 17 15:47:24.540 INFO [stderr]    |             ----^^^^^
Dec 17 15:47:24.540 INFO [stderr]    |             |
Dec 17 15:47:24.540 INFO [stderr]    |             help: remove this `mut`
Dec 17 15:47:24.540 INFO [stderr]    |
Dec 17 15:47:24.544 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 15:47:24.544 INFO [stderr] 
Dec 17 15:47:24.592 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Dec 17 15:47:25.253 INFO running `"docker" "inspect" "2ca38ce2ea70b933695e22da13f46654ed8fe59b882244512dd6ffab71e1d8f4"`
Dec 17 15:47:25.530 INFO running `"docker" "rm" "-f" "2ca38ce2ea70b933695e22da13f46654ed8fe59b882244512dd6ffab71e1d8f4"`
Dec 17 15:47:25.892 INFO [stdout] 2ca38ce2ea70b933695e22da13f46654ed8fe59b882244512dd6ffab71e1d8f4