Dec 19 16:01:40.358 INFO checking howeih/Day-23-Sudoku against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 16:01:40.358 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/howeih/Day-23-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 16:01:40.690 INFO [stdout] 37c50cb4be6c3cfa036d2cc3c761965ea1c9c81b3010e64cda125f6dccea5fcb
Dec 19 16:01:40.692 INFO running `"docker" "start" "-a" "37c50cb4be6c3cfa036d2cc3c761965ea1c9c81b3010e64cda125f6dccea5fcb"`
Dec 19 16:01:41.213 INFO [stderr]     Checking num-complex v0.1.43
Dec 19 16:01:42.088 INFO [stderr]     Checking ndarray v0.11.2
Dec 19 16:01:48.617 INFO [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
Dec 19 16:01:48.879 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.69s
Dec 19 16:01:49.246 INFO running `"docker" "inspect" "37c50cb4be6c3cfa036d2cc3c761965ea1c9c81b3010e64cda125f6dccea5fcb"`
Dec 19 16:01:49.404 INFO running `"docker" "rm" "-f" "37c50cb4be6c3cfa036d2cc3c761965ea1c9c81b3010e64cda125f6dccea5fcb"`
Dec 19 16:01:49.515 INFO [stdout] 37c50cb4be6c3cfa036d2cc3c761965ea1c9c81b3010e64cda125f6dccea5fcb