Dec 19 05:58:02.720 INFO checking voelklmichael/varidor against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:58:02.720 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/voelklmichael/varidor:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:58:03.201 INFO [stdout] 4ace3899eaafd3e3c41e033519c0724fcc921bcb15b236db13ac7384abb01f03
Dec 19 05:58:03.203 INFO running `"docker" "start" "-a" "4ace3899eaafd3e3c41e033519c0724fcc921bcb15b236db13ac7384abb01f03"`
Dec 19 05:58:05.706 INFO [stderr]     Checking varidor v0.1.0 (/opt/crater/workdir)
Dec 19 05:58:06.788 INFO [stderr] warning: type alias is never used: `Usize4`
Dec 19 05:58:06.789 INFO [stderr]   --> src/board_square/type_level_integers.rs:33:1
Dec 19 05:58:06.789 INFO [stderr]    |
Dec 19 05:58:06.789 INFO [stderr] 33 | pub type Usize4 = UsizeNext<Usize3>;
Dec 19 05:58:06.790 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.790 INFO [stderr]    |
Dec 19 05:58:06.790 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 05:58:06.790 INFO [stderr] 
Dec 19 05:58:06.791 INFO [stderr] warning: type alias is never used: `Usize5`
Dec 19 05:58:06.791 INFO [stderr]   --> src/board_square/type_level_integers.rs:34:1
Dec 19 05:58:06.791 INFO [stderr]    |
Dec 19 05:58:06.792 INFO [stderr] 34 | pub type Usize5 = UsizeNext<Usize4>;
Dec 19 05:58:06.792 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.792 INFO [stderr] 
Dec 19 05:58:06.792 INFO [stderr] warning: method is never used: `wall_lookup_unsafe`
Dec 19 05:58:06.793 INFO [stderr]    --> src/board_square/square_board.rs:200:5
Dec 19 05:58:06.793 INFO [stderr]     |
Dec 19 05:58:06.793 INFO [stderr] 200 | /     pub fn wall_lookup_unsafe(
Dec 19 05:58:06.794 INFO [stderr] 201 | |         &self,
Dec 19 05:58:06.794 INFO [stderr] 202 | |         lower_left_field: FieldIndexSquare<T>,
Dec 19 05:58:06.794 INFO [stderr] 203 | |         is_left_or_right: bool,
Dec 19 05:58:06.794 INFO [stderr] ...   |
Dec 19 05:58:06.795 INFO [stderr] 209 | |         )
Dec 19 05:58:06.795 INFO [stderr] 210 | |     }
Dec 19 05:58:06.795 INFO [stderr]     | |_____^
Dec 19 05:58:06.795 INFO [stderr] 
Dec 19 05:58:06.796 INFO [stderr] warning: method is never used: `croosing_lookup_unsafe`
Dec 19 05:58:06.796 INFO [stderr]    --> src/board_square/square_board.rs:211:5
Dec 19 05:58:06.796 INFO [stderr]     |
Dec 19 05:58:06.797 INFO [stderr] 211 |     pub fn croosing_lookup_unsafe(&self, lower_left_field: FieldIndexSquare<T>) -> WallCrossing {
Dec 19 05:58:06.797 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.797 INFO [stderr] 
Dec 19 05:58:06.797 INFO [stderr] warning: type alias is never used: `SquareBoard5`
Dec 19 05:58:06.798 INFO [stderr]   --> src/board_square/square_board5.rs:36:1
Dec 19 05:58:06.798 INFO [stderr]    |
Dec 19 05:58:06.798 INFO [stderr] 36 | / pub type SquareBoard5 =
Dec 19 05:58:06.798 INFO [stderr] 37 | |     SquareBoard<usize, Usize5, [WallPlaced; 2 * 5 * (5 - 1)], [WallCrossing; (5 - 1) * (5 - 1)]>;
Dec 19 05:58:06.798 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:06.799 INFO [stderr] 
Dec 19 05:58:06.799 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 19 05:58:06.799 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 19 05:58:06.799 INFO [stderr]    |
Dec 19 05:58:06.800 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 19 05:58:06.800 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 19 05:58:06.800 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:06.800 INFO [stderr] 
Dec 19 05:58:06.800 INFO [stderr] warning: variant is never constructed: `NotConnected`
Dec 19 05:58:06.801 INFO [stderr]   --> src/board_square/mod.rs:48:5
Dec 19 05:58:06.801 INFO [stderr]    |
Dec 19 05:58:06.801 INFO [stderr] 48 |     NotConnected,
Dec 19 05:58:06.801 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 05:58:06.801 INFO [stderr] 
Dec 19 05:58:06.802 INFO [stderr] warning: variant is never constructed: `FieldsNotAdjacent`
Dec 19 05:58:06.802 INFO [stderr]   --> src/board_square/mod.rs:53:5
Dec 19 05:58:06.802 INFO [stderr]    |
Dec 19 05:58:06.802 INFO [stderr] 53 |     FieldsNotAdjacent,
Dec 19 05:58:06.803 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.803 INFO [stderr] 
Dec 19 05:58:06.803 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 05:58:06.803 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 19 05:58:06.804 INFO [stderr]     |
Dec 19 05:58:06.804 INFO [stderr] 175 | /             new_visited_fields
Dec 19 05:58:06.804 INFO [stderr] 176 | |                 .iter()
Dec 19 05:58:06.804 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 19 05:58:06.805 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 19 05:58:06.805 INFO [stderr]     | |_____________________________________^
Dec 19 05:58:06.805 INFO [stderr]     |
Dec 19 05:58:06.805 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 05:58:06.806 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 05:58:06.806 INFO [stderr] 
Dec 19 05:58:06.995 INFO [stderr] warning: type alias is never used: `Usize4`
Dec 19 05:58:06.995 INFO [stderr]   --> src/board_square/type_level_integers.rs:33:1
Dec 19 05:58:06.995 INFO [stderr]    |
Dec 19 05:58:06.995 INFO [stderr] 33 | pub type Usize4 = UsizeNext<Usize3>;
Dec 19 05:58:06.995 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.995 INFO [stderr]    |
Dec 19 05:58:06.995 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 05:58:06.995 INFO [stderr] 
Dec 19 05:58:06.995 INFO [stderr] warning: type alias is never used: `Usize5`
Dec 19 05:58:06.995 INFO [stderr]   --> src/board_square/type_level_integers.rs:34:1
Dec 19 05:58:06.995 INFO [stderr]    |
Dec 19 05:58:06.995 INFO [stderr] 34 | pub type Usize5 = UsizeNext<Usize4>;
Dec 19 05:58:06.995 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.995 INFO [stderr] 
Dec 19 05:58:06.995 INFO [stderr] warning: method is never used: `wall_lookup_unsafe`
Dec 19 05:58:06.995 INFO [stderr]    --> src/board_square/square_board.rs:200:5
Dec 19 05:58:06.995 INFO [stderr]     |
Dec 19 05:58:06.995 INFO [stderr] 200 | /     pub fn wall_lookup_unsafe(
Dec 19 05:58:06.995 INFO [stderr] 201 | |         &self,
Dec 19 05:58:06.995 INFO [stderr] 202 | |         lower_left_field: FieldIndexSquare<T>,
Dec 19 05:58:06.996 INFO [stderr] 203 | |         is_left_or_right: bool,
Dec 19 05:58:06.996 INFO [stderr] ...   |
Dec 19 05:58:06.996 INFO [stderr] 209 | |         )
Dec 19 05:58:06.996 INFO [stderr] 210 | |     }
Dec 19 05:58:06.996 INFO [stderr]     | |_____^
Dec 19 05:58:06.996 INFO [stderr] 
Dec 19 05:58:06.996 INFO [stderr] warning: method is never used: `croosing_lookup_unsafe`
Dec 19 05:58:06.996 INFO [stderr]    --> src/board_square/square_board.rs:211:5
Dec 19 05:58:06.996 INFO [stderr]     |
Dec 19 05:58:06.996 INFO [stderr] 211 |     pub fn croosing_lookup_unsafe(&self, lower_left_field: FieldIndexSquare<T>) -> WallCrossing {
Dec 19 05:58:06.996 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.996 INFO [stderr] 
Dec 19 05:58:06.996 INFO [stderr] warning: type alias is never used: `SquareBoard5`
Dec 19 05:58:06.996 INFO [stderr]   --> src/board_square/square_board5.rs:36:1
Dec 19 05:58:06.996 INFO [stderr]    |
Dec 19 05:58:06.996 INFO [stderr] 36 | / pub type SquareBoard5 =
Dec 19 05:58:06.996 INFO [stderr] 37 | |     SquareBoard<usize, Usize5, [WallPlaced; 2 * 5 * (5 - 1)], [WallCrossing; (5 - 1) * (5 - 1)]>;
Dec 19 05:58:06.996 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:06.996 INFO [stderr] 
Dec 19 05:58:06.996 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 19 05:58:06.996 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 19 05:58:06.996 INFO [stderr]    |
Dec 19 05:58:06.996 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 19 05:58:06.996 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 19 05:58:06.996 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:06.997 INFO [stderr] 
Dec 19 05:58:06.997 INFO [stderr] warning: variant is never constructed: `NotConnected`
Dec 19 05:58:06.997 INFO [stderr]   --> src/board_square/mod.rs:48:5
Dec 19 05:58:06.997 INFO [stderr]    |
Dec 19 05:58:06.997 INFO [stderr] 48 |     NotConnected,
Dec 19 05:58:06.997 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 05:58:06.997 INFO [stderr] 
Dec 19 05:58:06.997 INFO [stderr] warning: variant is never constructed: `FieldsNotAdjacent`
Dec 19 05:58:06.997 INFO [stderr]   --> src/board_square/mod.rs:53:5
Dec 19 05:58:06.997 INFO [stderr]    |
Dec 19 05:58:06.997 INFO [stderr] 53 |     FieldsNotAdjacent,
Dec 19 05:58:06.997 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 05:58:06.997 INFO [stderr] 
Dec 19 05:58:07.006 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 05:58:07.006 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 19 05:58:07.007 INFO [stderr]     |
Dec 19 05:58:07.007 INFO [stderr] 175 | /             new_visited_fields
Dec 19 05:58:07.007 INFO [stderr] 176 | |                 .iter()
Dec 19 05:58:07.007 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 19 05:58:07.007 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 19 05:58:07.007 INFO [stderr]     | |_____________________________________^
Dec 19 05:58:07.007 INFO [stderr]     |
Dec 19 05:58:07.007 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 05:58:07.007 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 05:58:07.007 INFO [stderr] 
Dec 19 05:58:07.022 INFO [stderr] warning: type alias is never used: `SquareBoard3`
Dec 19 05:58:07.022 INFO [stderr]   --> src/board_square/square_board3.rs:36:1
Dec 19 05:58:07.022 INFO [stderr]    |
Dec 19 05:58:07.023 INFO [stderr] 36 | / pub type SquareBoard3 =
Dec 19 05:58:07.023 INFO [stderr] 37 | |     SquareBoard<usize, Usize3, [WallPlaced; 2 * 3 * (3 - 1)], [WallCrossing; (3 - 1) * (3 - 1)]>;
Dec 19 05:58:07.023 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:07.023 INFO [stderr]    |
Dec 19 05:58:07.023 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 05:58:07.023 INFO [stderr] 
Dec 19 05:58:07.023 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 19 05:58:07.024 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 19 05:58:07.024 INFO [stderr]    |
Dec 19 05:58:07.024 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 19 05:58:07.024 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 19 05:58:07.024 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:07.024 INFO [stderr] 
Dec 19 05:58:07.024 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 05:58:07.024 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 19 05:58:07.024 INFO [stderr]     |
Dec 19 05:58:07.024 INFO [stderr] 175 | /             new_visited_fields
Dec 19 05:58:07.024 INFO [stderr] 176 | |                 .iter()
Dec 19 05:58:07.024 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 19 05:58:07.025 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 19 05:58:07.025 INFO [stderr]     | |_____________________________________^
Dec 19 05:58:07.025 INFO [stderr]     |
Dec 19 05:58:07.025 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 05:58:07.025 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 05:58:07.025 INFO [stderr] 
Dec 19 05:58:07.217 INFO [stderr] warning: type alias is never used: `SquareBoard3`
Dec 19 05:58:07.218 INFO [stderr]   --> src/board_square/square_board3.rs:36:1
Dec 19 05:58:07.218 INFO [stderr]    |
Dec 19 05:58:07.218 INFO [stderr] 36 | / pub type SquareBoard3 =
Dec 19 05:58:07.218 INFO [stderr] 37 | |     SquareBoard<usize, Usize3, [WallPlaced; 2 * 3 * (3 - 1)], [WallCrossing; (3 - 1) * (3 - 1)]>;
Dec 19 05:58:07.218 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:07.218 INFO [stderr]    |
Dec 19 05:58:07.218 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 05:58:07.218 INFO [stderr] 
Dec 19 05:58:07.218 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 19 05:58:07.218 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 19 05:58:07.218 INFO [stderr]    |
Dec 19 05:58:07.219 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 19 05:58:07.219 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 19 05:58:07.219 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 19 05:58:07.219 INFO [stderr] 
Dec 19 05:58:07.221 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 19 05:58:07.221 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 19 05:58:07.221 INFO [stderr]     |
Dec 19 05:58:07.221 INFO [stderr] 175 | /             new_visited_fields
Dec 19 05:58:07.221 INFO [stderr] 176 | |                 .iter()
Dec 19 05:58:07.221 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 19 05:58:07.221 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 19 05:58:07.221 INFO [stderr]     | |_____________________________________^
Dec 19 05:58:07.221 INFO [stderr]     |
Dec 19 05:58:07.221 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 05:58:07.221 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 19 05:58:07.221 INFO [stderr] 
Dec 19 05:58:07.259 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
Dec 19 05:58:08.486 INFO running `"docker" "inspect" "4ace3899eaafd3e3c41e033519c0724fcc921bcb15b236db13ac7384abb01f03"`
Dec 19 05:58:08.798 INFO running `"docker" "rm" "-f" "4ace3899eaafd3e3c41e033519c0724fcc921bcb15b236db13ac7384abb01f03"`
Dec 19 05:58:09.088 INFO [stdout] 4ace3899eaafd3e3c41e033519c0724fcc921bcb15b236db13ac7384abb01f03