Dec 14 10:20:05.594 INFO testing Flecheck/Sudoku against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 10:20:05.594 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 10:20:06.141 INFO [stdout] 3a6f4238000e6e9d41a4d509134c35d9658b76e7eaf271b833c15c06b3a3165d
Dec 14 10:20:06.143 INFO running `"docker" "start" "-a" "3a6f4238000e6e9d41a4d509134c35d9658b76e7eaf271b833c15c06b3a3165d"`
Dec 14 10:20:09.006 INFO [stderr] usermod: no changes
Dec 14 10:20:09.117 INFO [stderr]    Compiling priority-queue v0.5.1
Dec 14 10:20:09.990 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 14 10:20:10.725 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 14 10:20:10.725 INFO [stderr]   --> src/main.rs:16:5
Dec 14 10:20:10.725 INFO [stderr]    |
Dec 14 10:20:10.726 INFO [stderr] 16 | use std::time::Duration;
Dec 14 10:20:10.726 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:10.726 INFO [stderr]    |
Dec 14 10:20:10.726 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 14 10:20:10.726 INFO [stderr] 
Dec 14 10:20:10.727 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 14 10:20:10.727 INFO [stderr]   --> src/main.rs:17:5
Dec 14 10:20:10.727 INFO [stderr]    |
Dec 14 10:20:10.727 INFO [stderr] 17 | use std::time::Instant;
Dec 14 10:20:10.727 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 14 10:20:10.727 INFO [stderr] 
Dec 14 10:20:11.025 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:20:11.025 INFO [stderr]   --> src/main.rs:43:9
Dec 14 10:20:11.026 INFO [stderr]    |
Dec 14 10:20:11.026 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 14 10:20:11.026 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:11.026 INFO [stderr]    |
Dec 14 10:20:11.027 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 10:20:11.027 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:20:11.027 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 10:20:11.027 INFO [stderr] 
Dec 14 10:20:13.935 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.90s
Dec 14 10:20:13.947 INFO [stderr] su: No module specific data is present
Dec 14 10:20:15.239 INFO running `"docker" "inspect" "3a6f4238000e6e9d41a4d509134c35d9658b76e7eaf271b833c15c06b3a3165d"`
Dec 14 10:20:15.555 INFO running `"docker" "rm" "-f" "3a6f4238000e6e9d41a4d509134c35d9658b76e7eaf271b833c15c06b3a3165d"`
Dec 14 10:20:15.919 INFO [stdout] 3a6f4238000e6e9d41a4d509134c35d9658b76e7eaf271b833c15c06b3a3165d
Dec 14 10:20:15.923 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 10:20:16.383 INFO [stdout] 57aa394ed1059c17c7caaa3278de340b4eb7e90355f7eff0f2673d9487175bb8
Dec 14 10:20:16.388 INFO running `"docker" "start" "-a" "57aa394ed1059c17c7caaa3278de340b4eb7e90355f7eff0f2673d9487175bb8"`
Dec 14 10:20:18.339 INFO [stderr] usermod: no changes
Dec 14 10:20:18.411 INFO [stderr]    Compiling sudoku v0.1.0 (/source)
Dec 14 10:20:19.174 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 14 10:20:19.174 INFO [stderr]   --> src/main.rs:16:5
Dec 14 10:20:19.174 INFO [stderr]    |
Dec 14 10:20:19.174 INFO [stderr] 16 | use std::time::Duration;
Dec 14 10:20:19.174 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:19.174 INFO [stderr]    |
Dec 14 10:20:19.175 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 14 10:20:19.175 INFO [stderr] 
Dec 14 10:20:19.175 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 14 10:20:19.175 INFO [stderr]   --> src/main.rs:17:5
Dec 14 10:20:19.175 INFO [stderr]    |
Dec 14 10:20:19.175 INFO [stderr] 17 | use std::time::Instant;
Dec 14 10:20:19.175 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 14 10:20:19.175 INFO [stderr] 
Dec 14 10:20:19.408 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 14 10:20:19.408 INFO [stderr]   --> src/main.rs:43:9
Dec 14 10:20:19.408 INFO [stderr]    |
Dec 14 10:20:19.408 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 14 10:20:19.408 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 10:20:19.408 INFO [stderr]    |
Dec 14 10:20:19.409 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 14 10:20:19.409 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 14 10:20:19.409 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 10:20:19.409 INFO [stderr] 
Dec 14 10:20:19.797 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
Dec 14 10:20:19.800 INFO [stderr] su: No module specific data is present
Dec 14 10:20:20.847 INFO running `"docker" "inspect" "57aa394ed1059c17c7caaa3278de340b4eb7e90355f7eff0f2673d9487175bb8"`
Dec 14 10:20:21.188 INFO running `"docker" "rm" "-f" "57aa394ed1059c17c7caaa3278de340b4eb7e90355f7eff0f2673d9487175bb8"`
Dec 14 10:20:21.503 INFO [stdout] 57aa394ed1059c17c7caaa3278de340b4eb7e90355f7eff0f2673d9487175bb8
Dec 14 10:20:21.511 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 10:20:21.982 INFO [stdout] dfb7439132fd0f94caea69962b80c4f2f82a077443cd53a77ceec0d93f4ddc6b
Dec 14 10:20:21.984 INFO running `"docker" "start" "-a" "dfb7439132fd0f94caea69962b80c4f2f82a077443cd53a77ceec0d93f4ddc6b"`
Dec 14 10:20:23.700 INFO [stderr] usermod: no changes
Dec 14 10:20:23.795 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 14 10:20:23.811 INFO [stderr]      Running /target/debug/deps/sudoku-e5ceccb38011bd0b
Dec 14 10:20:23.811 INFO [stdout] 
Dec 14 10:20:23.811 INFO [stdout] running 0 tests
Dec 14 10:20:23.811 INFO [stdout] 
Dec 14 10:20:23.811 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 10:20:23.811 INFO [stdout] 
Dec 14 10:20:23.814 INFO [stderr] su: No module specific data is present
Dec 14 10:20:25.081 INFO running `"docker" "inspect" "dfb7439132fd0f94caea69962b80c4f2f82a077443cd53a77ceec0d93f4ddc6b"`
Dec 14 10:20:25.388 INFO running `"docker" "rm" "-f" "dfb7439132fd0f94caea69962b80c4f2f82a077443cd53a77ceec0d93f4ddc6b"`
Dec 14 10:20:25.670 INFO [stdout] dfb7439132fd0f94caea69962b80c4f2f82a077443cd53a77ceec0d93f4ddc6b