Dec 14 04:17:24.193 INFO testing aacunningham/sudoku_ai_rust against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 04:17:24.193 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 14 04:17:24.527 INFO [stdout] fe60cace0317a635b403f2d58d44df05a8ff907b63333356886bb303626b686c
Dec 14 04:17:24.528 INFO running `"docker" "start" "-a" "fe60cace0317a635b403f2d58d44df05a8ff907b63333356886bb303626b686c"`
Dec 14 04:17:25.313 INFO [stderr] usermod: no changes
Dec 14 04:17:25.350 INFO [stderr]    Compiling sudoku_ai v0.1.0 (/source)
Dec 14 04:17:25.831 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 14 04:17:25.831 INFO [stderr]  --> src/lib.rs:1:12
Dec 14 04:17:25.831 INFO [stderr]   |
Dec 14 04:17:25.831 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 14 04:17:25.831 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 14 04:17:25.831 INFO [stderr]   |
Dec 14 04:17:25.831 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 14 04:17:25.831 INFO [stderr] 
Dec 14 04:17:27.515 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.18s
Dec 14 04:17:27.515 INFO [stderr] su: No module specific data is present
Dec 14 04:17:28.138 INFO running `"docker" "inspect" "fe60cace0317a635b403f2d58d44df05a8ff907b63333356886bb303626b686c"`
Dec 14 04:17:28.289 INFO running `"docker" "rm" "-f" "fe60cace0317a635b403f2d58d44df05a8ff907b63333356886bb303626b686c"`
Dec 14 04:17:28.517 INFO [stdout] fe60cace0317a635b403f2d58d44df05a8ff907b63333356886bb303626b686c
Dec 14 04:17:28.519 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 14 04:17:28.879 INFO [stdout] 6bf704d4db8c0efb55d8277f96ad3d423251f21905322795263f3de6ee53d6a9
Dec 14 04:17:28.881 INFO running `"docker" "start" "-a" "6bf704d4db8c0efb55d8277f96ad3d423251f21905322795263f3de6ee53d6a9"`
Dec 14 04:17:29.959 INFO [stderr] usermod: no changes
Dec 14 04:17:29.991 INFO [stderr]    Compiling sudoku_ai v0.1.0 (/source)
Dec 14 04:17:30.746 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 14 04:17:30.746 INFO [stderr]  --> src/lib.rs:1:12
Dec 14 04:17:30.746 INFO [stderr]   |
Dec 14 04:17:30.746 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 14 04:17:30.746 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 14 04:17:30.746 INFO [stderr]   |
Dec 14 04:17:30.746 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 14 04:17:30.746 INFO [stderr] 
Dec 14 04:17:30.999 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
Dec 14 04:17:31.000 INFO [stderr] su: No module specific data is present
Dec 14 04:17:31.291 INFO running `"docker" "inspect" "6bf704d4db8c0efb55d8277f96ad3d423251f21905322795263f3de6ee53d6a9"`
Dec 14 04:17:31.423 INFO running `"docker" "rm" "-f" "6bf704d4db8c0efb55d8277f96ad3d423251f21905322795263f3de6ee53d6a9"`
Dec 14 04:17:31.532 INFO [stdout] 6bf704d4db8c0efb55d8277f96ad3d423251f21905322795263f3de6ee53d6a9
Dec 14 04:17:31.534 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 14 04:17:31.726 INFO [stdout] ec9cb00231cb935fc76ce193c4e40f6ca1d68c7713f6127aa84228c8d294d251
Dec 14 04:17:31.733 INFO running `"docker" "start" "-a" "ec9cb00231cb935fc76ce193c4e40f6ca1d68c7713f6127aa84228c8d294d251"`
Dec 14 04:17:32.894 INFO [stderr] usermod: no changes
Dec 14 04:17:32.946 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 14 04:17:32.950 INFO [stderr]      Running /target/debug/deps/sudoku_ai-a65c5784baff204a
Dec 14 04:17:32.956 INFO [stdout] 
Dec 14 04:17:32.956 INFO [stdout] running 0 tests
Dec 14 04:17:32.956 INFO [stdout] 
Dec 14 04:17:32.957 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:17:32.957 INFO [stdout] 
Dec 14 04:17:32.963 INFO [stderr]      Running /target/debug/deps/sudoku_ai-91f45ea2d513d61a
Dec 14 04:17:32.968 INFO [stdout] 
Dec 14 04:17:32.968 INFO [stdout] running 0 tests
Dec 14 04:17:32.968 INFO [stdout] 
Dec 14 04:17:32.968 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:17:32.968 INFO [stdout] 
Dec 14 04:17:32.968 INFO [stderr]    Doc-tests sudoku_ai
Dec 14 04:17:33.758 INFO [stdout] 
Dec 14 04:17:33.758 INFO [stdout] running 6 tests
Dec 14 04:17:35.739 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::read_from_file (line 46) ... ok
Dec 14 04:17:36.431 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::is_solved (line 115) ... ok
Dec 14 04:17:36.444 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle (line 12) ... ok
Dec 14 04:17:36.778 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::solve (line 263) ... ok
Dec 14 04:17:37.129 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::read_from_string (line 84) ... ok
Dec 14 04:17:37.190 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::is_valid (line 144) ... ok
Dec 14 04:17:37.190 INFO [stdout] 
Dec 14 04:17:37.190 INFO [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 04:17:37.190 INFO [stdout] 
Dec 14 04:17:37.203 INFO [stderr] su: No module specific data is present
Dec 14 04:17:38.067 INFO running `"docker" "inspect" "ec9cb00231cb935fc76ce193c4e40f6ca1d68c7713f6127aa84228c8d294d251"`
Dec 14 04:17:38.465 INFO running `"docker" "rm" "-f" "ec9cb00231cb935fc76ce193c4e40f6ca1d68c7713f6127aa84228c8d294d251"`
Dec 14 04:17:38.738 INFO [stdout] ec9cb00231cb935fc76ce193c4e40f6ca1d68c7713f6127aa84228c8d294d251