Dec 19 20:38:18.408 INFO checking allknowingfrog/sudoku against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:38:18.409 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/allknowingfrog/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:38:18.850 INFO [stdout] 58b211ca92a757107494a755bd1af1b2377f86d33f26a015eaffb01f20671a39
Dec 19 20:38:18.852 INFO running `"docker" "start" "-a" "58b211ca92a757107494a755bd1af1b2377f86d33f26a015eaffb01f20671a39"`
Dec 19 20:38:20.292 INFO [stderr]     Checking winit v0.8.3
Dec 19 20:38:22.158 INFO [stderr]     Checking glutin v0.10.1
Dec 19 20:38:23.560 INFO [stderr]     Checking pistoncore-glutin_window v0.43.0
Dec 19 20:38:25.824 INFO [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
Dec 19 20:38:27.224 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.25s
Dec 19 20:38:27.597 INFO running `"docker" "inspect" "58b211ca92a757107494a755bd1af1b2377f86d33f26a015eaffb01f20671a39"`
Dec 19 20:38:27.720 INFO running `"docker" "rm" "-f" "58b211ca92a757107494a755bd1af1b2377f86d33f26a015eaffb01f20671a39"`
Dec 19 20:38:27.897 INFO [stdout] 58b211ca92a757107494a755bd1af1b2377f86d33f26a015eaffb01f20671a39