Nov 28 13:36:41.838 INFO checking Flecheck/Sudoku against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 13:36:41.838 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-2/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 13:36:42.374 INFO [stdout] 8e352460f405cfc34c35f93669ec2532dfb73a428727d4e6677c713ae31ce634
Nov 28 13:36:42.376 INFO running `"docker" "start" "-a" "8e352460f405cfc34c35f93669ec2532dfb73a428727d4e6677c713ae31ce634"`
Nov 28 13:36:45.095 INFO [stderr] usermod: no changes
Nov 28 13:36:45.260 INFO [stderr]     Checking indexmap v0.4.1
Nov 28 13:36:46.565 INFO [stderr]     Checking priority-queue v0.5.1
Nov 28 13:36:47.272 INFO [stderr]     Checking sudoku v0.1.0 (/source)
Nov 28 13:36:48.368 INFO [stderr] warning: unused import: `std::time::Duration`
Nov 28 13:36:48.369 INFO [stderr]   --> src/main.rs:16:5
Nov 28 13:36:48.369 INFO [stderr]    |
Nov 28 13:36:48.369 INFO [stderr] 16 | use std::time::Duration;
Nov 28 13:36:48.369 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Nov 28 13:36:48.369 INFO [stderr]    |
Nov 28 13:36:48.369 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 28 13:36:48.369 INFO [stderr] 
Nov 28 13:36:48.369 INFO [stderr] warning: unused import: `std::time::Instant`
Nov 28 13:36:48.369 INFO [stderr]   --> src/main.rs:17:5
Nov 28 13:36:48.369 INFO [stderr]    |
Nov 28 13:36:48.369 INFO [stderr] 17 | use std::time::Instant;
Nov 28 13:36:48.369 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Nov 28 13:36:48.369 INFO [stderr] 
Nov 28 13:36:48.624 INFO [stderr] warning: unused import: `std::time::Duration`
Nov 28 13:36:48.625 INFO [stderr]   --> src/main.rs:16:5
Nov 28 13:36:48.626 INFO [stderr]    |
Nov 28 13:36:48.627 INFO [stderr] 16 | use std::time::Duration;
Nov 28 13:36:48.627 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Nov 28 13:36:48.628 INFO [stderr]    |
Nov 28 13:36:48.628 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 28 13:36:48.629 INFO [stderr] 
Nov 28 13:36:48.629 INFO [stderr] warning: unused import: `std::time::Instant`
Nov 28 13:36:48.630 INFO [stderr]   --> src/main.rs:17:5
Nov 28 13:36:48.630 INFO [stderr]    |
Nov 28 13:36:48.631 INFO [stderr] 17 | use std::time::Instant;
Nov 28 13:36:48.631 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Nov 28 13:36:48.632 INFO [stderr] 
Nov 28 13:36:48.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 13:36:48.965 INFO [stderr]   --> src/main.rs:43:9
Nov 28 13:36:48.965 INFO [stderr]    |
Nov 28 13:36:48.966 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Nov 28 13:36:48.967 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:36:48.967 INFO [stderr]    |
Nov 28 13:36:48.968 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 13:36:48.968 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 13:36:48.969 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)
Nov 28 13:36:48.969 INFO [stderr] 
Nov 28 13:36:49.126 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 13:36:49.126 INFO [stderr]   --> src/main.rs:43:9
Nov 28 13:36:49.126 INFO [stderr]    |
Nov 28 13:36:49.126 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Nov 28 13:36:49.126 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 13:36:49.126 INFO [stderr]    |
Nov 28 13:36:49.126 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 13:36:49.127 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 13:36:49.127 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)
Nov 28 13:36:49.127 INFO [stderr] 
Nov 28 13:36:49.177 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.04s
Nov 28 13:36:49.185 INFO [stderr] su: No module specific data is present
Nov 28 13:36:50.834 INFO running `"docker" "inspect" "8e352460f405cfc34c35f93669ec2532dfb73a428727d4e6677c713ae31ce634"`
Nov 28 13:36:51.221 INFO running `"docker" "rm" "-f" "8e352460f405cfc34c35f93669ec2532dfb73a428727d4e6677c713ae31ce634"`
Nov 28 13:36:51.488 INFO [stdout] 8e352460f405cfc34c35f93669ec2532dfb73a428727d4e6677c713ae31ce634