Dec 14 10:20:14.549 INFO testing Flecheck/Sudoku against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 10:20:14.549 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 10:20:15.101 INFO [stdout] 7fc24eafd2d0867a587897c345897bbc6051c483268a96b0155f963ae44c48b9
Dec 14 10:20:15.103 INFO running `"docker" "start" "-a" "7fc24eafd2d0867a587897c345897bbc6051c483268a96b0155f963ae44c48b9"`
Dec 14 10:20:16.435 INFO [stderr] usermod: no changes
Dec 14 10:20:16.534 INFO [stderr]    Compiling indexmap v0.4.1
Dec 14 10:20:17.979 INFO [stderr]    Compiling priority-queue v0.5.1
Dec 14 10:20:18.757 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 14 10:20:19.451 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 14 10:20:19.451 INFO [stderr]   --> src/main.rs:16:5
Dec 14 10:20:19.451 INFO [stderr]    |
Dec 14 10:20:19.451 INFO [stderr] 16 | use std::time::Duration;
Dec 14 10:20:19.451 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:19.451 INFO [stderr]    |
Dec 14 10:20:19.451 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 14 10:20:19.451 INFO [stderr] 
Dec 14 10:20:19.451 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 14 10:20:19.451 INFO [stderr]   --> src/main.rs:17:5
Dec 14 10:20:19.451 INFO [stderr]    |
Dec 14 10:20:19.451 INFO [stderr] 17 | use std::time::Instant;
Dec 14 10:20:19.451 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 14 10:20:19.451 INFO [stderr] 
Dec 14 10:20:19.715 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:20:19.715 INFO [stderr]   --> src/main.rs:43:9
Dec 14 10:20:19.715 INFO [stderr]    |
Dec 14 10:20:19.716 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 14 10:20:19.716 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:19.716 INFO [stderr]    |
Dec 14 10:20:19.717 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 10:20:19.717 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:20:19.717 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 14 10:20:19.717 INFO [stderr] 
Dec 14 10:20:22.599 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.14s
Dec 14 10:20:22.602 INFO [stderr] su: No module specific data is present
Dec 14 10:20:23.559 INFO running `"docker" "inspect" "7fc24eafd2d0867a587897c345897bbc6051c483268a96b0155f963ae44c48b9"`
Dec 14 10:20:23.851 INFO running `"docker" "rm" "-f" "7fc24eafd2d0867a587897c345897bbc6051c483268a96b0155f963ae44c48b9"`
Dec 14 10:20:24.111 INFO [stdout] 7fc24eafd2d0867a587897c345897bbc6051c483268a96b0155f963ae44c48b9
Dec 14 10:20:24.119 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 10:20:24.777 INFO [stdout] 37d0fd3df48d58795f707cbeb37607b71c754e9866e1634a120ae2d363c0213b
Dec 14 10:20:24.779 INFO running `"docker" "start" "-a" "37d0fd3df48d58795f707cbeb37607b71c754e9866e1634a120ae2d363c0213b"`
Dec 14 10:20:26.198 INFO [stderr] usermod: no changes
Dec 14 10:20:26.256 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 14 10:20:27.043 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 14 10:20:27.043 INFO [stderr]   --> src/main.rs:16:5
Dec 14 10:20:27.043 INFO [stderr]    |
Dec 14 10:20:27.043 INFO [stderr] 16 | use std::time::Duration;
Dec 14 10:20:27.043 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:27.043 INFO [stderr]    |
Dec 14 10:20:27.043 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 14 10:20:27.043 INFO [stderr] 
Dec 14 10:20:27.043 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 14 10:20:27.043 INFO [stderr]   --> src/main.rs:17:5
Dec 14 10:20:27.043 INFO [stderr]    |
Dec 14 10:20:27.043 INFO [stderr] 17 | use std::time::Instant;
Dec 14 10:20:27.043 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 14 10:20:27.043 INFO [stderr] 
Dec 14 10:20:27.310 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:20:27.311 INFO [stderr]   --> src/main.rs:43:9
Dec 14 10:20:27.311 INFO [stderr]    |
Dec 14 10:20:27.311 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 14 10:20:27.311 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:27.311 INFO [stderr]    |
Dec 14 10:20:27.311 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 10:20:27.311 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:20:27.315 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 14 10:20:27.315 INFO [stderr] 
Dec 14 10:20:27.687 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
Dec 14 10:20:27.690 INFO [stderr] su: No module specific data is present
Dec 14 10:20:28.243 INFO running `"docker" "inspect" "37d0fd3df48d58795f707cbeb37607b71c754e9866e1634a120ae2d363c0213b"`
Dec 14 10:20:28.547 INFO running `"docker" "rm" "-f" "37d0fd3df48d58795f707cbeb37607b71c754e9866e1634a120ae2d363c0213b"`
Dec 14 10:20:28.780 INFO [stdout] 37d0fd3df48d58795f707cbeb37607b71c754e9866e1634a120ae2d363c0213b
Dec 14 10:20:28.785 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 10:20:29.243 INFO [stdout] cba42a333df8fadafd099a910ce740442d299ad36e627011045c97b78098cea9
Dec 14 10:20:29.252 INFO running `"docker" "start" "-a" "cba42a333df8fadafd099a910ce740442d299ad36e627011045c97b78098cea9"`
Dec 14 10:20:30.487 INFO [stderr] usermod: no changes
Dec 14 10:20:30.567 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 14 10:20:30.583 INFO [stderr]      Running /target/debug/deps/sudoku-7328ce7be21c99c7
Dec 14 10:20:30.591 INFO [stdout] 
Dec 14 10:20:30.591 INFO [stdout] running 0 tests
Dec 14 10:20:30.591 INFO [stdout] 
Dec 14 10:20:30.591 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 10:20:30.591 INFO [stdout] 
Dec 14 10:20:30.595 INFO [stderr] su: No module specific data is present
Dec 14 10:20:31.519 INFO running `"docker" "inspect" "cba42a333df8fadafd099a910ce740442d299ad36e627011045c97b78098cea9"`
Dec 14 10:20:31.783 INFO running `"docker" "rm" "-f" "cba42a333df8fadafd099a910ce740442d299ad36e627011045c97b78098cea9"`
Dec 14 10:20:32.107 INFO [stdout] cba42a333df8fadafd099a910ce740442d299ad36e627011045c97b78098cea9