Dec 06 08:14:16.582 INFO testing aacunningham/sudoku_ai_rust against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 08:14:16.582 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 08:14:16.746 INFO [stdout] a2321381a7a4c3e8f96441b9261d20da95b0543544319b7a5d3c88ce2076e50d
Dec 06 08:14:16.748 INFO running `"docker" "start" "-a" "a2321381a7a4c3e8f96441b9261d20da95b0543544319b7a5d3c88ce2076e50d"`
Dec 06 08:14:17.154 INFO [stderr] usermod: no changes
Dec 06 08:14:17.187 INFO [stderr]    Compiling sudoku_ai v0.1.0 (/source)
Dec 06 08:14:17.628 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 06 08:14:17.628 INFO [stderr]  --> src/lib.rs:1:12
Dec 06 08:14:17.628 INFO [stderr]   |
Dec 06 08:14:17.628 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 06 08:14:17.628 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 06 08:14:17.628 INFO [stderr]   |
Dec 06 08:14:17.628 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 06 08:14:17.628 INFO [stderr] 
Dec 06 08:14:19.220 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.04s
Dec 06 08:14:19.223 INFO [stderr] su: No module specific data is present
Dec 06 08:14:19.998 INFO running `"docker" "inspect" "a2321381a7a4c3e8f96441b9261d20da95b0543544319b7a5d3c88ce2076e50d"`
Dec 06 08:14:20.314 INFO running `"docker" "rm" "-f" "a2321381a7a4c3e8f96441b9261d20da95b0543544319b7a5d3c88ce2076e50d"`
Dec 06 08:14:20.583 INFO [stdout] a2321381a7a4c3e8f96441b9261d20da95b0543544319b7a5d3c88ce2076e50d
Dec 06 08:14:20.585 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 08:14:20.947 INFO [stdout] ef3b7de1f305107fd77eeada8fdd4f8d51f2807f52e3b2f339470036ce2c102f
Dec 06 08:14:20.950 INFO running `"docker" "start" "-a" "ef3b7de1f305107fd77eeada8fdd4f8d51f2807f52e3b2f339470036ce2c102f"`
Dec 06 08:14:21.724 INFO [stderr] usermod: no changes
Dec 06 08:14:21.751 INFO [stderr]    Compiling sudoku_ai v0.1.0 (/source)
Dec 06 08:14:22.276 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 06 08:14:22.276 INFO [stderr]  --> src/lib.rs:1:12
Dec 06 08:14:22.276 INFO [stderr]   |
Dec 06 08:14:22.276 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 06 08:14:22.276 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 06 08:14:22.276 INFO [stderr]   |
Dec 06 08:14:22.276 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 06 08:14:22.276 INFO [stderr] 
Dec 06 08:14:22.663 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
Dec 06 08:14:22.663 INFO [stderr] su: No module specific data is present
Dec 06 08:14:23.146 INFO running `"docker" "inspect" "ef3b7de1f305107fd77eeada8fdd4f8d51f2807f52e3b2f339470036ce2c102f"`
Dec 06 08:14:23.384 INFO running `"docker" "rm" "-f" "ef3b7de1f305107fd77eeada8fdd4f8d51f2807f52e3b2f339470036ce2c102f"`
Dec 06 08:14:23.688 INFO [stdout] ef3b7de1f305107fd77eeada8fdd4f8d51f2807f52e3b2f339470036ce2c102f
Dec 06 08:14:23.694 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 06 08:14:24.284 INFO [stdout] 18b2635790796fa72b270adfb30adb5bb6df344c8c93caf02cecd32dd799a3b6
Dec 06 08:14:24.286 INFO running `"docker" "start" "-a" "18b2635790796fa72b270adfb30adb5bb6df344c8c93caf02cecd32dd799a3b6"`
Dec 06 08:14:25.592 INFO [stderr] usermod: no changes
Dec 06 08:14:25.684 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 06 08:14:25.690 INFO [stderr]      Running /target/debug/deps/sudoku_ai-7c8caacabb390f76
Dec 06 08:14:25.699 INFO [stdout] 
Dec 06 08:14:25.699 INFO [stdout] running 0 tests
Dec 06 08:14:25.699 INFO [stdout] 
Dec 06 08:14:25.699 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 08:14:25.699 INFO [stdout] 
Dec 06 08:14:25.704 INFO [stdout] 
Dec 06 08:14:25.705 INFO [stdout] running 0 tests
Dec 06 08:14:25.705 INFO [stdout] 
Dec 06 08:14:25.705 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 08:14:25.705 INFO [stdout] 
Dec 06 08:14:25.705 INFO [stderr]      Running /target/debug/deps/sudoku_ai-439e4d0acb0ae437
Dec 06 08:14:25.705 INFO [stderr]    Doc-tests sudoku_ai
Dec 06 08:14:26.316 INFO [stdout] 
Dec 06 08:14:26.316 INFO [stdout] running 6 tests
Dec 06 08:14:27.249 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::read_from_file (line 46) ... ok
Dec 06 08:14:27.315 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::is_valid (line 144) ... ok
Dec 06 08:14:27.408 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::solve (line 263) ... ok
Dec 06 08:14:27.496 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle (line 12) ... ok
Dec 06 08:14:27.496 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::read_from_string (line 84) ... ok
Dec 06 08:14:27.528 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::is_solved (line 115) ... ok
Dec 06 08:14:27.528 INFO [stdout] 
Dec 06 08:14:27.528 INFO [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 08:14:27.528 INFO [stdout] 
Dec 06 08:14:27.535 INFO [stderr] su: No module specific data is present
Dec 06 08:14:27.778 INFO running `"docker" "inspect" "18b2635790796fa72b270adfb30adb5bb6df344c8c93caf02cecd32dd799a3b6"`
Dec 06 08:14:27.963 INFO running `"docker" "rm" "-f" "18b2635790796fa72b270adfb30adb5bb6df344c8c93caf02cecd32dd799a3b6"`
Dec 06 08:14:28.186 INFO [stdout] 18b2635790796fa72b270adfb30adb5bb6df344c8c93caf02cecd32dd799a3b6