Dec 17 21:45:28.281 INFO checking kaojo/sudojo against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 21:45:28.281 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/kaojo/sudojo:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 21:45:28.579 INFO [stdout] 65bf17c97d51c9215b023797c869bef28d3b775479d963f846ab327e5bfe46cb
Dec 17 21:45:28.581 INFO running `"docker" "start" "-a" "65bf17c97d51c9215b023797c869bef28d3b775479d963f846ab327e5bfe46cb"`
Dec 17 21:45:30.192 INFO [stderr]     Checking sudojo v0.1.0 (/opt/crater/workdir)
Dec 17 21:45:30.680 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.680 INFO [stderr]   --> src/sudoku/game/board.rs:51:9
Dec 17 21:45:30.680 INFO [stderr]    |
Dec 17 21:45:30.680 INFO [stderr] 51 |         writeln!(f, "Board");
Dec 17 21:45:30.680 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:45:30.680 INFO [stderr]    |
Dec 17 21:45:30.680 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 21:45:30.681 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.681 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 17 21:45:30.681 INFO [stderr] 
Dec 17 21:45:30.681 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.681 INFO [stderr]   --> src/sudoku/game/board.rs:55:17
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr] 55 |                 writeln!(f, "-------------------------");
Dec 17 21:45:30.681 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.681 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 17 21:45:30.681 INFO [stderr] 
Dec 17 21:45:30.681 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.681 INFO [stderr]   --> src/sudoku/game/board.rs:59:21
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr] 59 |                     write!(f, "| ");
Dec 17 21:45:30.681 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.681 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 17 21:45:30.681 INFO [stderr] 
Dec 17 21:45:30.681 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.681 INFO [stderr]   --> src/sudoku/game/board.rs:61:17
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr] 61 | /                 write!(
Dec 17 21:45:30.681 INFO [stderr] 62 | |                     f,
Dec 17 21:45:30.681 INFO [stderr] 63 | |                     "{} ",
Dec 17 21:45:30.681 INFO [stderr] 64 | |                     match self.get_square(&Coordinate::new(x, y))
Dec 17 21:45:30.681 INFO [stderr] ...  |
Dec 17 21:45:30.681 INFO [stderr] 70 | |                     }
Dec 17 21:45:30.681 INFO [stderr] 71 | |                 );
Dec 17 21:45:30.681 INFO [stderr]    | |__________________^
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.681 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 17 21:45:30.681 INFO [stderr] 
Dec 17 21:45:30.681 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.681 INFO [stderr]   --> src/sudoku/game/board.rs:73:13
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr] 73 |             writeln!(f, "|");
Dec 17 21:45:30.681 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 17 21:45:30.681 INFO [stderr]    |
Dec 17 21:45:30.681 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.681 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 17 21:45:30.681 INFO [stderr] 
Dec 17 21:45:30.699 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.699 INFO [stderr]   --> src/sudoku/game/board.rs:51:9
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr] 51 |         writeln!(f, "Board");
Dec 17 21:45:30.699 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 21:45:30.699 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.699 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 17 21:45:30.699 INFO [stderr] 
Dec 17 21:45:30.699 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.699 INFO [stderr]   --> src/sudoku/game/board.rs:55:17
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr] 55 |                 writeln!(f, "-------------------------");
Dec 17 21:45:30.699 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.699 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 17 21:45:30.699 INFO [stderr] 
Dec 17 21:45:30.699 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.699 INFO [stderr]   --> src/sudoku/game/board.rs:59:21
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr] 59 |                     write!(f, "| ");
Dec 17 21:45:30.699 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.699 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 17 21:45:30.699 INFO [stderr] 
Dec 17 21:45:30.699 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.699 INFO [stderr]   --> src/sudoku/game/board.rs:61:17
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr] 61 | /                 write!(
Dec 17 21:45:30.699 INFO [stderr] 62 | |                     f,
Dec 17 21:45:30.699 INFO [stderr] 63 | |                     "{} ",
Dec 17 21:45:30.699 INFO [stderr] 64 | |                     match self.get_square(&Coordinate::new(x, y))
Dec 17 21:45:30.699 INFO [stderr] ...  |
Dec 17 21:45:30.699 INFO [stderr] 70 | |                     }
Dec 17 21:45:30.699 INFO [stderr] 71 | |                 );
Dec 17 21:45:30.699 INFO [stderr]    | |__________________^
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.699 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 17 21:45:30.699 INFO [stderr] 
Dec 17 21:45:30.699 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 21:45:30.699 INFO [stderr]   --> src/sudoku/game/board.rs:73:13
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr] 73 |             writeln!(f, "|");
Dec 17 21:45:30.699 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 17 21:45:30.699 INFO [stderr]    |
Dec 17 21:45:30.699 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 21:45:30.699 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 17 21:45:30.699 INFO [stderr] 
Dec 17 21:45:30.940 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Dec 17 21:45:31.370 INFO running `"docker" "inspect" "65bf17c97d51c9215b023797c869bef28d3b775479d963f846ab327e5bfe46cb"`
Dec 17 21:45:31.556 INFO running `"docker" "rm" "-f" "65bf17c97d51c9215b023797c869bef28d3b775479d963f846ab327e5bfe46cb"`
Dec 17 21:45:31.712 INFO [stdout] 65bf17c97d51c9215b023797c869bef28d3b775479d963f846ab327e5bfe46cb