Dec 12 02:49:45.989 INFO checking Flecheck/Sudoku against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 02:49:45.989 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 02:49:46.519 INFO [stdout] a9e76e542ccd56490b2351ec6de55d9b676fddbb8a72b19903585068fb303b3e
Dec 12 02:49:46.521 INFO running `"docker" "start" "-a" "a9e76e542ccd56490b2351ec6de55d9b676fddbb8a72b19903585068fb303b3e"`
Dec 12 02:49:48.928 INFO [stderr] usermod: no changes
Dec 12 02:49:49.028 INFO [stderr]     Checking indexmap v0.4.1
Dec 12 02:49:49.028 INFO [stderr]     Checking bit-set v0.5.0
Dec 12 02:49:50.748 INFO [stderr]     Checking priority-queue v0.5.1
Dec 12 02:49:51.356 INFO [stderr]     Checking sudoku v0.1.0 (/source)
Dec 12 02:49:52.084 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 12 02:49:52.084 INFO [stderr]   --> src/main.rs:16:5
Dec 12 02:49:52.084 INFO [stderr]    |
Dec 12 02:49:52.084 INFO [stderr] 16 | use std::time::Duration;
Dec 12 02:49:52.084 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.084 INFO [stderr]    |
Dec 12 02:49:52.088 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 02:49:52.088 INFO [stderr] 
Dec 12 02:49:52.088 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 12 02:49:52.088 INFO [stderr]   --> src/main.rs:17:5
Dec 12 02:49:52.088 INFO [stderr]    |
Dec 12 02:49:52.088 INFO [stderr] 17 | use std::time::Instant;
Dec 12 02:49:52.088 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.088 INFO [stderr] 
Dec 12 02:49:52.488 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 12 02:49:52.488 INFO [stderr]   --> src/main.rs:16:5
Dec 12 02:49:52.488 INFO [stderr]    |
Dec 12 02:49:52.488 INFO [stderr] 16 | use std::time::Duration;
Dec 12 02:49:52.488 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.488 INFO [stderr]    |
Dec 12 02:49:52.488 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 02:49:52.488 INFO [stderr] 
Dec 12 02:49:52.488 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 12 02:49:52.488 INFO [stderr]   --> src/main.rs:17:5
Dec 12 02:49:52.488 INFO [stderr]    |
Dec 12 02:49:52.488 INFO [stderr] 17 | use std::time::Instant;
Dec 12 02:49:52.488 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.488 INFO [stderr] 
Dec 12 02:49:52.592 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 02:49:52.592 INFO [stderr]   --> src/main.rs:43:9
Dec 12 02:49:52.592 INFO [stderr]    |
Dec 12 02:49:52.592 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 12 02:49:52.592 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.592 INFO [stderr]    |
Dec 12 02:49:52.592 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 02:49:52.592 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 02:49:52.592 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 12 02:49:52.592 INFO [stderr] 
Dec 12 02:49:52.879 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 02:49:52.879 INFO [stderr]   --> src/main.rs:43:9
Dec 12 02:49:52.879 INFO [stderr]    |
Dec 12 02:49:52.879 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 12 02:49:52.880 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:49:52.880 INFO [stderr]    |
Dec 12 02:49:52.880 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 02:49:52.880 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 02:49:52.880 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 12 02:49:52.880 INFO [stderr] 
Dec 12 02:49:52.916 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.96s
Dec 12 02:49:52.916 INFO [stderr] su: No module specific data is present
Dec 12 02:49:53.518 INFO running `"docker" "inspect" "a9e76e542ccd56490b2351ec6de55d9b676fddbb8a72b19903585068fb303b3e"`
Dec 12 02:49:53.771 INFO running `"docker" "rm" "-f" "a9e76e542ccd56490b2351ec6de55d9b676fddbb8a72b19903585068fb303b3e"`
Dec 12 02:49:54.100 INFO [stdout] a9e76e542ccd56490b2351ec6de55d9b676fddbb8a72b19903585068fb303b3e