Dec 11 06:38:00.698 INFO checking voelklmichael/varidor against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 06:38:00.698 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 06:38:01.218 INFO [stdout] 641a03fcad566e8eee30a06e7b99294d5c0aa0d7f582b1375ec990db87c4cd4a
Dec 11 06:38:01.220 INFO running `"docker" "start" "-a" "641a03fcad566e8eee30a06e7b99294d5c0aa0d7f582b1375ec990db87c4cd4a"`
Dec 11 06:38:03.680 INFO [stderr] usermod: no changes
Dec 11 06:38:03.726 INFO [stderr]     Checking varidor v0.1.0 (/source)
Dec 11 06:38:05.085 INFO [stderr] warning: type alias is never used: `SquareBoard3`
Dec 11 06:38:05.085 INFO [stderr]   --> src/board_square/square_board3.rs:36:1
Dec 11 06:38:05.086 INFO [stderr]    |
Dec 11 06:38:05.086 INFO [stderr] 36 | / pub type SquareBoard3 =
Dec 11 06:38:05.086 INFO [stderr] 37 | |     SquareBoard<usize, Usize3, [WallPlaced; 2 * 3 * (3 - 1)], [WallCrossing; (3 - 1) * (3 - 1)]>;
Dec 11 06:38:05.087 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.087 INFO [stderr]    |
Dec 11 06:38:05.087 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 06:38:05.088 INFO [stderr] 
Dec 11 06:38:05.088 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 11 06:38:05.088 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 11 06:38:05.089 INFO [stderr]    |
Dec 11 06:38:05.089 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 11 06:38:05.089 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 11 06:38:05.090 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.090 INFO [stderr] 
Dec 11 06:38:05.093 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 11 06:38:05.093 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 11 06:38:05.093 INFO [stderr]     |
Dec 11 06:38:05.094 INFO [stderr] 175 | /             new_visited_fields
Dec 11 06:38:05.094 INFO [stderr] 176 | |                 .iter()
Dec 11 06:38:05.094 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 11 06:38:05.094 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 11 06:38:05.094 INFO [stderr]     | |_____________________________________^
Dec 11 06:38:05.095 INFO [stderr]     |
Dec 11 06:38:05.095 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 06:38:05.095 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 11 06:38:05.095 INFO [stderr] 
Dec 11 06:38:05.480 INFO [stderr] warning: type alias is never used: `Usize4`
Dec 11 06:38:05.481 INFO [stderr]   --> src/board_square/type_level_integers.rs:33:1
Dec 11 06:38:05.481 INFO [stderr]    |
Dec 11 06:38:05.481 INFO [stderr] 33 | pub type Usize4 = UsizeNext<Usize3>;
Dec 11 06:38:05.481 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.481 INFO [stderr]    |
Dec 11 06:38:05.482 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 06:38:05.482 INFO [stderr] 
Dec 11 06:38:05.482 INFO [stderr] warning: type alias is never used: `Usize5`
Dec 11 06:38:05.482 INFO [stderr]   --> src/board_square/type_level_integers.rs:34:1
Dec 11 06:38:05.482 INFO [stderr]    |
Dec 11 06:38:05.482 INFO [stderr] 34 | pub type Usize5 = UsizeNext<Usize4>;
Dec 11 06:38:05.483 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.483 INFO [stderr] 
Dec 11 06:38:05.483 INFO [stderr] warning: method is never used: `wall_lookup_unsafe`
Dec 11 06:38:05.483 INFO [stderr]    --> src/board_square/square_board.rs:200:5
Dec 11 06:38:05.483 INFO [stderr]     |
Dec 11 06:38:05.484 INFO [stderr] 200 | /     pub fn wall_lookup_unsafe(
Dec 11 06:38:05.484 INFO [stderr] 201 | |         &self,
Dec 11 06:38:05.484 INFO [stderr] 202 | |         lower_left_field: FieldIndexSquare<T>,
Dec 11 06:38:05.484 INFO [stderr] 203 | |         is_left_or_right: bool,
Dec 11 06:38:05.484 INFO [stderr] ...   |
Dec 11 06:38:05.484 INFO [stderr] 209 | |         )
Dec 11 06:38:05.484 INFO [stderr] 210 | |     }
Dec 11 06:38:05.484 INFO [stderr]     | |_____^
Dec 11 06:38:05.484 INFO [stderr] 
Dec 11 06:38:05.484 INFO [stderr] warning: method is never used: `croosing_lookup_unsafe`
Dec 11 06:38:05.484 INFO [stderr]    --> src/board_square/square_board.rs:211:5
Dec 11 06:38:05.484 INFO [stderr]     |
Dec 11 06:38:05.484 INFO [stderr] 211 |     pub fn croosing_lookup_unsafe(&self, lower_left_field: FieldIndexSquare<T>) -> WallCrossing {
Dec 11 06:38:05.484 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.484 INFO [stderr] 
Dec 11 06:38:05.484 INFO [stderr] warning: type alias is never used: `SquareBoard5`
Dec 11 06:38:05.484 INFO [stderr]   --> src/board_square/square_board5.rs:36:1
Dec 11 06:38:05.484 INFO [stderr]    |
Dec 11 06:38:05.484 INFO [stderr] 36 | / pub type SquareBoard5 =
Dec 11 06:38:05.484 INFO [stderr] 37 | |     SquareBoard<usize, Usize5, [WallPlaced; 2 * 5 * (5 - 1)], [WallCrossing; (5 - 1) * (5 - 1)]>;
Dec 11 06:38:05.484 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.485 INFO [stderr] 
Dec 11 06:38:05.485 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 11 06:38:05.485 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 11 06:38:05.485 INFO [stderr]    |
Dec 11 06:38:05.485 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 11 06:38:05.485 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 11 06:38:05.485 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.485 INFO [stderr] 
Dec 11 06:38:05.485 INFO [stderr] warning: variant is never constructed: `NotConnected`
Dec 11 06:38:05.485 INFO [stderr]   --> src/board_square/mod.rs:48:5
Dec 11 06:38:05.485 INFO [stderr]    |
Dec 11 06:38:05.485 INFO [stderr] 48 |     NotConnected,
Dec 11 06:38:05.485 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 11 06:38:05.485 INFO [stderr] 
Dec 11 06:38:05.485 INFO [stderr] warning: variant is never constructed: `FieldsNotAdjacent`
Dec 11 06:38:05.485 INFO [stderr]   --> src/board_square/mod.rs:53:5
Dec 11 06:38:05.485 INFO [stderr]    |
Dec 11 06:38:05.485 INFO [stderr] 53 |     FieldsNotAdjacent,
Dec 11 06:38:05.485 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.485 INFO [stderr] 
Dec 11 06:38:05.488 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 11 06:38:05.488 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 11 06:38:05.489 INFO [stderr]     |
Dec 11 06:38:05.489 INFO [stderr] 175 | /             new_visited_fields
Dec 11 06:38:05.489 INFO [stderr] 176 | |                 .iter()
Dec 11 06:38:05.490 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 11 06:38:05.490 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 11 06:38:05.490 INFO [stderr]     | |_____________________________________^
Dec 11 06:38:05.491 INFO [stderr]     |
Dec 11 06:38:05.491 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 06:38:05.491 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 11 06:38:05.491 INFO [stderr] 
Dec 11 06:38:05.528 INFO [stderr] warning: type alias is never used: `SquareBoard3`
Dec 11 06:38:05.529 INFO [stderr]   --> src/board_square/square_board3.rs:36:1
Dec 11 06:38:05.529 INFO [stderr]    |
Dec 11 06:38:05.529 INFO [stderr] 36 | / pub type SquareBoard3 =
Dec 11 06:38:05.530 INFO [stderr] 37 | |     SquareBoard<usize, Usize3, [WallPlaced; 2 * 3 * (3 - 1)], [WallCrossing; (3 - 1) * (3 - 1)]>;
Dec 11 06:38:05.530 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.530 INFO [stderr]    |
Dec 11 06:38:05.531 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 06:38:05.531 INFO [stderr] 
Dec 11 06:38:05.531 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 11 06:38:05.531 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 11 06:38:05.531 INFO [stderr]    |
Dec 11 06:38:05.532 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 11 06:38:05.532 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 11 06:38:05.532 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.532 INFO [stderr] 
Dec 11 06:38:05.532 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 11 06:38:05.532 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 11 06:38:05.532 INFO [stderr]     |
Dec 11 06:38:05.532 INFO [stderr] 175 | /             new_visited_fields
Dec 11 06:38:05.532 INFO [stderr] 176 | |                 .iter()
Dec 11 06:38:05.532 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 11 06:38:05.532 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 11 06:38:05.532 INFO [stderr]     | |_____________________________________^
Dec 11 06:38:05.532 INFO [stderr]     |
Dec 11 06:38:05.532 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 06:38:05.532 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 11 06:38:05.532 INFO [stderr] 
Dec 11 06:38:05.677 INFO [stderr] warning: type alias is never used: `Usize4`
Dec 11 06:38:05.678 INFO [stderr]   --> src/board_square/type_level_integers.rs:33:1
Dec 11 06:38:05.678 INFO [stderr]    |
Dec 11 06:38:05.678 INFO [stderr] 33 | pub type Usize4 = UsizeNext<Usize3>;
Dec 11 06:38:05.678 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.678 INFO [stderr]    |
Dec 11 06:38:05.678 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 06:38:05.678 INFO [stderr] 
Dec 11 06:38:05.679 INFO [stderr] warning: type alias is never used: `Usize5`
Dec 11 06:38:05.679 INFO [stderr]   --> src/board_square/type_level_integers.rs:34:1
Dec 11 06:38:05.679 INFO [stderr]    |
Dec 11 06:38:05.679 INFO [stderr] 34 | pub type Usize5 = UsizeNext<Usize4>;
Dec 11 06:38:05.679 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.679 INFO [stderr] 
Dec 11 06:38:05.679 INFO [stderr] warning: method is never used: `wall_lookup_unsafe`
Dec 11 06:38:05.679 INFO [stderr]    --> src/board_square/square_board.rs:200:5
Dec 11 06:38:05.679 INFO [stderr]     |
Dec 11 06:38:05.679 INFO [stderr] 200 | /     pub fn wall_lookup_unsafe(
Dec 11 06:38:05.679 INFO [stderr] 201 | |         &self,
Dec 11 06:38:05.679 INFO [stderr] 202 | |         lower_left_field: FieldIndexSquare<T>,
Dec 11 06:38:05.679 INFO [stderr] 203 | |         is_left_or_right: bool,
Dec 11 06:38:05.679 INFO [stderr] ...   |
Dec 11 06:38:05.679 INFO [stderr] 209 | |         )
Dec 11 06:38:05.679 INFO [stderr] 210 | |     }
Dec 11 06:38:05.679 INFO [stderr]     | |_____^
Dec 11 06:38:05.679 INFO [stderr] 
Dec 11 06:38:05.679 INFO [stderr] warning: method is never used: `croosing_lookup_unsafe`
Dec 11 06:38:05.679 INFO [stderr]    --> src/board_square/square_board.rs:211:5
Dec 11 06:38:05.679 INFO [stderr]     |
Dec 11 06:38:05.679 INFO [stderr] 211 |     pub fn croosing_lookup_unsafe(&self, lower_left_field: FieldIndexSquare<T>) -> WallCrossing {
Dec 11 06:38:05.679 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.679 INFO [stderr] 
Dec 11 06:38:05.679 INFO [stderr] warning: type alias is never used: `SquareBoard5`
Dec 11 06:38:05.679 INFO [stderr]   --> src/board_square/square_board5.rs:36:1
Dec 11 06:38:05.679 INFO [stderr]    |
Dec 11 06:38:05.679 INFO [stderr] 36 | / pub type SquareBoard5 =
Dec 11 06:38:05.679 INFO [stderr] 37 | |     SquareBoard<usize, Usize5, [WallPlaced; 2 * 5 * (5 - 1)], [WallCrossing; (5 - 1) * (5 - 1)]>;
Dec 11 06:38:05.679 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.679 INFO [stderr] 
Dec 11 06:38:05.679 INFO [stderr] warning: type alias is never used: `SquareBoard4`
Dec 11 06:38:05.679 INFO [stderr]   --> src/board_square/square_board4.rs:36:1
Dec 11 06:38:05.679 INFO [stderr]    |
Dec 11 06:38:05.679 INFO [stderr] 36 | / pub type SquareBoard4 =
Dec 11 06:38:05.679 INFO [stderr] 37 | |     SquareBoard<usize, Usize4, [WallPlaced; 2 * 4 * (4 - 1)], [WallCrossing; (4 - 1) * (4 - 1)]>;
Dec 11 06:38:05.679 INFO [stderr]    | |_________________________________________________________________________________________________^
Dec 11 06:38:05.679 INFO [stderr] 
Dec 11 06:38:05.679 INFO [stderr] warning: variant is never constructed: `NotConnected`
Dec 11 06:38:05.679 INFO [stderr]   --> src/board_square/mod.rs:48:5
Dec 11 06:38:05.679 INFO [stderr]    |
Dec 11 06:38:05.679 INFO [stderr] 48 |     NotConnected,
Dec 11 06:38:05.679 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 11 06:38:05.679 INFO [stderr] 
Dec 11 06:38:05.679 INFO [stderr] warning: variant is never constructed: `FieldsNotAdjacent`
Dec 11 06:38:05.679 INFO [stderr]   --> src/board_square/mod.rs:53:5
Dec 11 06:38:05.679 INFO [stderr]    |
Dec 11 06:38:05.679 INFO [stderr] 53 |     FieldsNotAdjacent,
Dec 11 06:38:05.679 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 11 06:38:05.679 INFO [stderr] 
Dec 11 06:38:05.680 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 11 06:38:05.680 INFO [stderr]    --> src/board_square/mod.rs:175:13
Dec 11 06:38:05.680 INFO [stderr]     |
Dec 11 06:38:05.680 INFO [stderr] 175 | /             new_visited_fields
Dec 11 06:38:05.680 INFO [stderr] 176 | |                 .iter()
Dec 11 06:38:05.680 INFO [stderr] 177 | |                 .map(|&x| visited_fields.push(x))
Dec 11 06:38:05.680 INFO [stderr] 178 | |                 .collect::<Vec<_>>();
Dec 11 06:38:05.680 INFO [stderr]     | |_____________________________________^
Dec 11 06:38:05.680 INFO [stderr]     |
Dec 11 06:38:05.680 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 06:38:05.680 INFO [stderr]     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 11 06:38:05.680 INFO [stderr] 
Dec 11 06:38:05.710 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.00s
Dec 11 06:38:05.713 INFO [stderr] su: No module specific data is present
Dec 11 06:38:06.936 INFO running `"docker" "inspect" "641a03fcad566e8eee30a06e7b99294d5c0aa0d7f582b1375ec990db87c4cd4a"`
Dec 11 06:38:07.190 INFO running `"docker" "rm" "-f" "641a03fcad566e8eee30a06e7b99294d5c0aa0d7f582b1375ec990db87c4cd4a"`
Dec 11 06:38:07.494 INFO [stdout] 641a03fcad566e8eee30a06e7b99294d5c0aa0d7f582b1375ec990db87c4cd4a