Nov 02 19:55:45.682 INFO checking Ragnaroek/libmaze against try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7 for pr-55517
Nov 02 19:55:45.682 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-7/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55517/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/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 +dc8b02d6f1e93f212fc39844ea688b634b4a03c7-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"`
Nov 02 19:55:46.085 INFO blam! a4421223705d8972507881afcdce1133482918ef7e020f6692e45e7cd5aac932
Nov 02 19:55:46.086 INFO running `"docker" "start" "-a" "a4421223705d8972507881afcdce1133482918ef7e020f6692e45e7cd5aac932"`
Nov 02 19:55:47.799 INFO kablam! usermod: no changes
Nov 02 19:55:47.874 INFO kablam!     Checking maze v0.1.0 (/source)
Nov 02 19:55:50.567 INFO kablam! warning: unused import: `SquareMaze`
Nov 02 19:55:50.567 INFO kablam!  --> tests/visited.rs:4:25
Nov 02 19:55:50.567 INFO kablam!   |
Nov 02 19:55:50.567 INFO kablam! 4 | use maze::square_maze::{SquareMaze, WallDirection};
Nov 02 19:55:50.567 INFO kablam!   |                         ^^^^^^^^^^
Nov 02 19:55:50.584 INFO kablam!   |
Nov 02 19:55:50.588 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 02 19:55:50.588 INFO kablam! 
Nov 02 19:55:51.948 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.12s
Nov 02 19:55:51.953 INFO kablam! su: No module specific data is present
Nov 02 19:55:53.404 INFO running `"docker" "rm" "-f" "a4421223705d8972507881afcdce1133482918ef7e020f6692e45e7cd5aac932"`
Nov 02 19:55:53.721 INFO blam! a4421223705d8972507881afcdce1133482918ef7e020f6692e45e7cd5aac932