Dec 05 02:30:54.970 INFO checking Flecheck/Sudoku against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 02:30:54.970 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 02:30:55.508 INFO [stdout] bd3d80aacc9536c8ff5c48bab6712d2a5d261bfca1af5b2b0b026c56683d8027
Dec 05 02:30:55.510 INFO running `"docker" "start" "-a" "bd3d80aacc9536c8ff5c48bab6712d2a5d261bfca1af5b2b0b026c56683d8027"`
Dec 05 02:30:57.598 INFO [stderr] usermod: no changes
Dec 05 02:30:57.736 INFO [stderr]     Checking indexmap v0.4.1
Dec 05 02:30:58.890 INFO [stderr]     Checking priority-queue v0.5.1
Dec 05 02:30:59.535 INFO [stderr]     Checking sudoku v0.1.0 (/source)
Dec 05 02:31:00.579 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 05 02:31:00.579 INFO [stderr]   --> src/main.rs:16:5
Dec 05 02:31:00.579 INFO [stderr]    |
Dec 05 02:31:00.579 INFO [stderr] 16 | use std::time::Duration;
Dec 05 02:31:00.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 05 02:31:00.579 INFO [stderr]    |
Dec 05 02:31:00.579 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 05 02:31:00.579 INFO [stderr] 
Dec 05 02:31:00.579 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 05 02:31:00.579 INFO [stderr]   --> src/main.rs:17:5
Dec 05 02:31:00.579 INFO [stderr]    |
Dec 05 02:31:00.579 INFO [stderr] 17 | use std::time::Instant;
Dec 05 02:31:00.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 05 02:31:00.579 INFO [stderr] 
Dec 05 02:31:00.826 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 05 02:31:00.826 INFO [stderr]   --> src/main.rs:16:5
Dec 05 02:31:00.826 INFO [stderr]    |
Dec 05 02:31:00.826 INFO [stderr] 16 | use std::time::Duration;
Dec 05 02:31:00.826 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 05 02:31:00.826 INFO [stderr]    |
Dec 05 02:31:00.826 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 05 02:31:00.826 INFO [stderr] 
Dec 05 02:31:00.826 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 05 02:31:00.826 INFO [stderr]   --> src/main.rs:17:5
Dec 05 02:31:00.826 INFO [stderr]    |
Dec 05 02:31:00.826 INFO [stderr] 17 | use std::time::Instant;
Dec 05 02:31:00.826 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 05 02:31:00.827 INFO [stderr] 
Dec 05 02:31:01.041 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 02:31:01.041 INFO [stderr]   --> src/main.rs:43:9
Dec 05 02:31:01.041 INFO [stderr]    |
Dec 05 02:31:01.041 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 05 02:31:01.041 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 02:31:01.041 INFO [stderr]    |
Dec 05 02:31:01.041 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 02:31:01.041 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 02:31:01.041 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 05 02:31:01.041 INFO [stderr] 
Dec 05 02:31:01.163 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 02:31:01.163 INFO [stderr]   --> src/main.rs:43:9
Dec 05 02:31:01.163 INFO [stderr]    |
Dec 05 02:31:01.163 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Dec 05 02:31:01.163 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 02:31:01.163 INFO [stderr]    |
Dec 05 02:31:01.163 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 02:31:01.163 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 02:31:01.163 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 05 02:31:01.163 INFO [stderr] 
Dec 05 02:31:01.213 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.58s
Dec 05 02:31:01.225 INFO [stderr] su: No module specific data is present
Dec 05 02:31:02.404 INFO running `"docker" "inspect" "bd3d80aacc9536c8ff5c48bab6712d2a5d261bfca1af5b2b0b026c56683d8027"`
Dec 05 02:31:02.775 INFO running `"docker" "rm" "-f" "bd3d80aacc9536c8ff5c48bab6712d2a5d261bfca1af5b2b0b026c56683d8027"`
Dec 05 02:31:03.055 INFO [stdout] bd3d80aacc9536c8ff5c48bab6712d2a5d261bfca1af5b2b0b026c56683d8027