Dec 04 10:31:26.539 INFO checking sebm/checkers against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 10:31:26.540 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 04 10:31:26.983 INFO [stdout] 2356a5d4b984c02e4e55966603623647e1a41541bde2c5e3a31c5c7e824b6f5f
Dec 04 10:31:26.987 INFO running `"docker" "start" "-a" "2356a5d4b984c02e4e55966603623647e1a41541bde2c5e3a31c5c7e824b6f5f"`
Dec 04 10:31:28.252 INFO [stderr] usermod: no changes
Dec 04 10:31:28.276 INFO [stderr]     Checking checkers v0.1.0 (/source)
Dec 04 10:31:28.507 INFO [stderr] warning: unused import: `initial_board`
Dec 04 10:31:28.507 INFO [stderr]  --> src/main.rs:4:26
Dec 04 10:31:28.507 INFO [stderr]   |
Dec 04 10:31:28.507 INFO [stderr] 4 | use board::{BoardSquare, initial_board, draw_board};
Dec 04 10:31:28.507 INFO [stderr]   |                          ^^^^^^^^^^^^^
Dec 04 10:31:28.507 INFO [stderr]   |
Dec 04 10:31:28.507 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 10:31:28.507 INFO [stderr] 
Dec 04 10:31:28.556 INFO [stderr] warning: unused import: `initial_board`
Dec 04 10:31:28.556 INFO [stderr]  --> src/main.rs:4:26
Dec 04 10:31:28.556 INFO [stderr]   |
Dec 04 10:31:28.556 INFO [stderr] 4 | use board::{BoardSquare, initial_board, draw_board};
Dec 04 10:31:28.556 INFO [stderr]   |                          ^^^^^^^^^^^^^
Dec 04 10:31:28.556 INFO [stderr]   |
Dec 04 10:31:28.556 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 10:31:28.556 INFO [stderr] 
Dec 04 10:31:28.667 INFO [stderr] warning: function is never used: `initial_board`
Dec 04 10:31:28.667 INFO [stderr]   --> src/board.rs:26:1
Dec 04 10:31:28.667 INFO [stderr]    |
Dec 04 10:31:28.667 INFO [stderr] 26 | pub fn initial_board() -> [[BoardSquare; 8]; 8] {
Dec 04 10:31:28.667 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:31:28.667 INFO [stderr]    |
Dec 04 10:31:28.667 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 10:31:28.667 INFO [stderr] 
Dec 04 10:31:28.785 INFO [stderr] warning: function is never used: `initial_board`
Dec 04 10:31:28.785 INFO [stderr]   --> src/board.rs:26:1
Dec 04 10:31:28.785 INFO [stderr]    |
Dec 04 10:31:28.785 INFO [stderr] 26 | pub fn initial_board() -> [[BoardSquare; 8]; 8] {
Dec 04 10:31:28.785 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:31:28.785 INFO [stderr]    |
Dec 04 10:31:28.785 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 10:31:28.785 INFO [stderr] 
Dec 04 10:31:28.835 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Dec 04 10:31:28.845 INFO [stderr] su: No module specific data is present
Dec 04 10:31:29.337 INFO running `"docker" "inspect" "2356a5d4b984c02e4e55966603623647e1a41541bde2c5e3a31c5c7e824b6f5f"`
Dec 04 10:31:29.729 INFO running `"docker" "rm" "-f" "2356a5d4b984c02e4e55966603623647e1a41541bde2c5e3a31c5c7e824b6f5f"`
Dec 04 10:31:30.011 INFO [stdout] 2356a5d4b984c02e4e55966603623647e1a41541bde2c5e3a31c5c7e824b6f5f