Nov 30 11:05:21.580 INFO checking Flecheck/Sudoku against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 11:05:21.580 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-0/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 11:05:22.058 INFO [stdout] 702616457c3fd668d2c5884dcbc9f9c91131715de13a0591cd1280e71ad11e97
Nov 30 11:05:22.060 INFO running `"docker" "start" "-a" "702616457c3fd668d2c5884dcbc9f9c91131715de13a0591cd1280e71ad11e97"`
Nov 30 11:05:24.003 INFO [stderr] usermod: no changes
Nov 30 11:05:24.120 INFO [stderr]     Checking priority-queue v0.5.1
Nov 30 11:05:24.977 INFO [stderr]     Checking sudoku v0.1.0 (/source)
Nov 30 11:05:26.084 INFO [stderr] warning: unused import: `std::time::Duration`
Nov 30 11:05:26.084 INFO [stderr]   --> src/main.rs:16:5
Nov 30 11:05:26.084 INFO [stderr]    |
Nov 30 11:05:26.084 INFO [stderr] 16 | use std::time::Duration;
Nov 30 11:05:26.084 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Nov 30 11:05:26.084 INFO [stderr]    |
Nov 30 11:05:26.084 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 30 11:05:26.085 INFO [stderr] 
Nov 30 11:05:26.085 INFO [stderr] warning: unused import: `std::time::Instant`
Nov 30 11:05:26.085 INFO [stderr]   --> src/main.rs:17:5
Nov 30 11:05:26.085 INFO [stderr]    |
Nov 30 11:05:26.085 INFO [stderr] 17 | use std::time::Instant;
Nov 30 11:05:26.085 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Nov 30 11:05:26.085 INFO [stderr] 
Nov 30 11:05:26.120 INFO [stderr] warning: unused import: `std::time::Duration`
Nov 30 11:05:26.120 INFO [stderr]   --> src/main.rs:16:5
Nov 30 11:05:26.120 INFO [stderr]    |
Nov 30 11:05:26.120 INFO [stderr] 16 | use std::time::Duration;
Nov 30 11:05:26.120 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Nov 30 11:05:26.120 INFO [stderr]    |
Nov 30 11:05:26.120 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 30 11:05:26.120 INFO [stderr] 
Nov 30 11:05:26.120 INFO [stderr] warning: unused import: `std::time::Instant`
Nov 30 11:05:26.120 INFO [stderr]   --> src/main.rs:17:5
Nov 30 11:05:26.120 INFO [stderr]    |
Nov 30 11:05:26.120 INFO [stderr] 17 | use std::time::Instant;
Nov 30 11:05:26.120 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Nov 30 11:05:26.120 INFO [stderr] 
Nov 30 11:05:26.613 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 11:05:26.613 INFO [stderr]   --> src/main.rs:43:9
Nov 30 11:05:26.613 INFO [stderr]    |
Nov 30 11:05:26.613 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Nov 30 11:05:26.613 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 11:05:26.613 INFO [stderr]    |
Nov 30 11:05:26.613 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 11:05:26.613 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 11:05:26.613 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 30 11:05:26.613 INFO [stderr] 
Nov 30 11:05:26.752 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 11:05:26.752 INFO [stderr]   --> src/main.rs:43:9
Nov 30 11:05:26.752 INFO [stderr]    |
Nov 30 11:05:26.752 INFO [stderr] 43 |         writeln!(stdout, "{}", res);
Nov 30 11:05:26.752 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 11:05:26.752 INFO [stderr]    |
Nov 30 11:05:26.752 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 11:05:26.752 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 11:05:26.752 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 30 11:05:26.752 INFO [stderr] 
Nov 30 11:05:26.779 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
Nov 30 11:05:26.781 INFO [stderr] su: No module specific data is present
Nov 30 11:05:27.499 INFO running `"docker" "inspect" "702616457c3fd668d2c5884dcbc9f9c91131715de13a0591cd1280e71ad11e97"`
Nov 30 11:05:27.930 INFO running `"docker" "rm" "-f" "702616457c3fd668d2c5884dcbc9f9c91131715de13a0591cd1280e71ad11e97"`
Nov 30 11:05:28.218 INFO [stdout] 702616457c3fd668d2c5884dcbc9f9c91131715de13a0591cd1280e71ad11e97