Oct 13 02:54:32.531 INFO checking Ragnaroek/libmaze against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 02:54:32.532 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-0/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-0/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 02:54:33.038 INFO blam! 67d5d65e684019e9775ee85593af68ccceefadef742e02feca37d2708e173dce
Oct 13 02:54:33.040 INFO running `"docker" "start" "-a" "67d5d65e684019e9775ee85593af68ccceefadef742e02feca37d2708e173dce"`
Oct 13 02:54:34.611 INFO kablam! usermod: no changes
Oct 13 02:54:34.719 INFO kablam!     Checking maze v0.1.0 (/source)
Oct 13 02:54:38.636 INFO kablam! warning: unused import: `SquareMaze`
Oct 13 02:54:38.637 INFO kablam!  --> tests/visited.rs:4:25
Oct 13 02:54:38.638 INFO kablam!   |
Oct 13 02:54:38.638 INFO kablam! 4 | use maze::square_maze::{SquareMaze, WallDirection};
Oct 13 02:54:38.639 INFO kablam!   |                         ^^^^^^^^^^
Oct 13 02:54:38.641 INFO kablam!   |
Oct 13 02:54:38.642 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 02:54:38.642 INFO kablam! 
Oct 13 02:54:38.752 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.09s
Oct 13 02:54:38.758 INFO kablam! su: No module specific data is present
Oct 13 02:54:40.009 INFO running `"docker" "rm" "-f" "67d5d65e684019e9775ee85593af68ccceefadef742e02feca37d2708e173dce"`
Oct 13 02:54:40.372 INFO blam! 67d5d65e684019e9775ee85593af68ccceefadef742e02feca37d2708e173dce