Dec 06 03:23:27.863 INFO testing conundrumer/crossword against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 03:23:27.863 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-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 06 03:23:28.120 INFO [stdout] 8e33d482521430805b146c56090918886ddf42f77c290fda0a34beaac883206b
Dec 06 03:23:28.122 INFO running `"docker" "start" "-a" "8e33d482521430805b146c56090918886ddf42f77c290fda0a34beaac883206b"`
Dec 06 03:23:30.103 INFO [stderr] usermod: no changes
Dec 06 03:23:30.160 INFO [stderr]    Compiling crossword v0.1.0 (/source)
Dec 06 03:23:30.592 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 06 03:23:30.592 INFO [stderr]   --> src/grid.rs:25:21
Dec 06 03:23:30.592 INFO [stderr]    |
Dec 06 03:23:30.592 INFO [stderr] 25 |         vec![Empty; ((bb.width() as usize) * (bb.height() as usize))]
Dec 06 03:23:30.592 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 03:23:30.592 INFO [stderr]    |
Dec 06 03:23:30.592 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 06 03:23:30.592 INFO [stderr] 
Dec 06 03:23:30.889 INFO [stderr] warning: variable does not need to be mutable
Dec 06 03:23:30.889 INFO [stderr]    --> src/filter.rs:115:17
Dec 06 03:23:30.889 INFO [stderr]     |
Dec 06 03:23:30.889 INFO [stderr] 115 |             let mut seen = &mut self.seen.borrow_mut();
Dec 06 03:23:30.889 INFO [stderr]     |                 ----^^^^
Dec 06 03:23:30.889 INFO [stderr]     |                 |
Dec 06 03:23:30.890 INFO [stderr]     |                 help: remove this `mut`
Dec 06 03:23:30.890 INFO [stderr]     |
Dec 06 03:23:30.890 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 06 03:23:30.890 INFO [stderr] 
Dec 06 03:23:30.924 INFO [stderr] warning: type alias is never used: `GridCellPos`
Dec 06 03:23:30.924 INFO [stderr]  --> src/grid_cell.rs:4:1
Dec 06 03:23:30.924 INFO [stderr]   |
Dec 06 03:23:30.924 INFO [stderr] 4 | type GridCellPos = (GridCell, (i8, i8));
Dec 06 03:23:30.924 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:23:30.924 INFO [stderr]   |
Dec 06 03:23:30.925 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 03:23:30.925 INFO [stderr] 
Dec 06 03:23:30.925 INFO [stderr] warning: method is never used: `is_valid`
Dec 06 03:23:30.925 INFO [stderr]   --> src/crossword.rs:38:5
Dec 06 03:23:30.926 INFO [stderr]    |
Dec 06 03:23:30.926 INFO [stderr] 38 |     pub fn is_valid(&self) -> bool {
Dec 06 03:23:30.926 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:23:30.926 INFO [stderr] 
Dec 06 03:23:30.927 INFO [stderr] warning: method is never used: `iter`
Dec 06 03:23:30.927 INFO [stderr]   --> src/generate.rs:41:5
Dec 06 03:23:30.927 INFO [stderr]    |
Dec 06 03:23:30.927 INFO [stderr] 41 |     pub fn iter<'b>(&'b self) -> Box<Iterator<Item=Crossword> + 'b> {
Dec 06 03:23:30.928 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:23:30.928 INFO [stderr] 
Dec 06 03:23:30.928 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 06 03:23:30.928 INFO [stderr]  --> src/main.rs:1:12
Dec 06 03:23:30.929 INFO [stderr]   |
Dec 06 03:23:30.929 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 06 03:23:30.929 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:23:30.929 INFO [stderr]   |
Dec 06 03:23:30.930 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 06 03:23:30.930 INFO [stderr] 
Dec 06 03:23:32.755 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.62s
Dec 06 03:23:32.757 INFO [stderr] su: No module specific data is present
Dec 06 03:23:33.164 INFO running `"docker" "inspect" "8e33d482521430805b146c56090918886ddf42f77c290fda0a34beaac883206b"`
Dec 06 03:23:33.474 INFO running `"docker" "rm" "-f" "8e33d482521430805b146c56090918886ddf42f77c290fda0a34beaac883206b"`
Dec 06 03:23:33.844 INFO [stdout] 8e33d482521430805b146c56090918886ddf42f77c290fda0a34beaac883206b
Dec 06 03:23:33.850 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen --no-run" "-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 06 03:23:34.339 INFO [stdout] 95299fd7c6c347415cfed389c6ace414021115aa517f77dbe43ddfd3bc395f71
Dec 06 03:23:34.341 INFO running `"docker" "start" "-a" "95299fd7c6c347415cfed389c6ace414021115aa517f77dbe43ddfd3bc395f71"`
Dec 06 03:23:35.661 INFO [stderr] usermod: no changes
Dec 06 03:23:35.696 INFO [stderr]    Compiling crossword v0.1.0 (/source)
Dec 06 03:23:36.064 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 06 03:23:36.064 INFO [stderr]   --> src/grid.rs:25:21
Dec 06 03:23:36.064 INFO [stderr]    |
Dec 06 03:23:36.064 INFO [stderr] 25 |         vec![Empty; ((bb.width() as usize) * (bb.height() as usize))]
Dec 06 03:23:36.064 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 06 03:23:36.064 INFO [stderr]    |
Dec 06 03:23:36.064 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 06 03:23:36.064 INFO [stderr] 
Dec 06 03:23:36.407 INFO [stderr] warning: variable does not need to be mutable
Dec 06 03:23:36.407 INFO [stderr]    --> src/filter.rs:115:17
Dec 06 03:23:36.407 INFO [stderr]     |
Dec 06 03:23:36.407 INFO [stderr] 115 |             let mut seen = &mut self.seen.borrow_mut();
Dec 06 03:23:36.407 INFO [stderr]     |                 ----^^^^
Dec 06 03:23:36.407 INFO [stderr]     |                 |
Dec 06 03:23:36.407 INFO [stderr]     |                 help: remove this `mut`
Dec 06 03:23:36.407 INFO [stderr]     |
Dec 06 03:23:36.407 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 06 03:23:36.407 INFO [stderr] 
Dec 06 03:23:36.461 INFO [stderr] warning: type alias is never used: `GridCellPos`
Dec 06 03:23:36.461 INFO [stderr]  --> src/grid_cell.rs:4:1
Dec 06 03:23:36.461 INFO [stderr]   |
Dec 06 03:23:36.461 INFO [stderr] 4 | type GridCellPos = (GridCell, (i8, i8));
Dec 06 03:23:36.461 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:23:36.461 INFO [stderr]   |
Dec 06 03:23:36.461 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 03:23:36.461 INFO [stderr] 
Dec 06 03:23:36.461 INFO [stderr] warning: type alias is never used: `WordPosition`
Dec 06 03:23:36.461 INFO [stderr]    --> src/generate.rs:185:5
Dec 06 03:23:36.461 INFO [stderr]     |
Dec 06 03:23:36.461 INFO [stderr] 185 |     type WordPosition = (&'static str, Position);
Dec 06 03:23:36.462 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:23:36.462 INFO [stderr] 
Dec 06 03:23:36.462 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 06 03:23:36.462 INFO [stderr]  --> src/main.rs:1:12
Dec 06 03:23:36.462 INFO [stderr]   |
Dec 06 03:23:36.462 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 06 03:23:36.462 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 03:23:36.462 INFO [stderr]   |
Dec 06 03:23:36.462 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 06 03:23:36.462 INFO [stderr] 
Dec 06 03:23:38.868 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
Dec 06 03:23:38.868 INFO [stderr] su: No module specific data is present
Dec 06 03:23:40.232 INFO running `"docker" "inspect" "95299fd7c6c347415cfed389c6ace414021115aa517f77dbe43ddfd3bc395f71"`
Dec 06 03:23:40.530 INFO running `"docker" "rm" "-f" "95299fd7c6c347415cfed389c6ace414021115aa517f77dbe43ddfd3bc395f71"`
Dec 06 03:23:40.862 INFO [stdout] 95299fd7c6c347415cfed389c6ace414021115aa517f77dbe43ddfd3bc395f71
Dec 06 03:23:40.862 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen" "-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 06 03:23:41.384 INFO [stdout] 136868dc34abb2424f2a5167eaa5a73d62ad980cbf334066b3ae00a05757d0dc
Dec 06 03:23:41.389 INFO running `"docker" "start" "-a" "136868dc34abb2424f2a5167eaa5a73d62ad980cbf334066b3ae00a05757d0dc"`
Dec 06 03:23:42.065 INFO [stderr] usermod: no changes
Dec 06 03:23:42.086 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
Dec 06 03:23:42.086 INFO [stderr]      Running /target/debug/deps/crossword-f9799048f3c00758
Dec 06 03:23:42.087 INFO [stdout] 
Dec 06 03:23:42.088 INFO [stdout] running 21 tests
Dec 06 03:23:42.088 INFO [stdout] test crossword::tests::bounding_box ... ok
Dec 06 03:23:42.088 INFO [stdout] test crossword::tests::display ... ok
Dec 06 03:23:42.089 INFO [stdout] test crossword::tests::is_invalid ... ok
Dec 06 03:23:42.092 INFO [stdout] test bench::generate_1 ... ok
Dec 06 03:23:42.092 INFO [stdout] test crossword::tests::is_invalid_adjacent ... ok
Dec 06 03:23:42.093 INFO [stdout] test crossword::tests::letters ... ok
Dec 06 03:23:42.093 INFO [stdout] test generate::tests::display ... ok
Dec 06 03:23:42.093 INFO [stdout] test crossword::tests::num_overlaps ... ok
Dec 06 03:23:42.100 INFO [stdout] test generate::tests::test_gen_iter ... ok
Dec 06 03:23:42.101 INFO [stdout] test grid_cell::tests::letter_block_collision ... ok
Dec 06 03:23:42.101 INFO [stdout] test rand::tests::rand_range ... ok
Dec 06 03:23:42.101 INFO [stdout] test word_placements::tests::hash ... ok
Dec 06 03:23:42.101 INFO [stdout] test word_placements::tests::new ... ok
Dec 06 03:23:42.101 INFO [stdout] test word_placements::tests::set ... ok
Dec 06 03:23:42.109 INFO [stdout] test generate::tests::letter_block_collision ... ok
Dec 06 03:23:42.112 INFO [stdout] test crossword::tests::is_valid_diagonal ... ok
Dec 06 03:23:42.115 INFO [stdout] test crossword::tests::is_invalid_touching ... ok
Dec 06 03:23:42.120 INFO [stdout] test crossword::tests::is_valid ... ok
Dec 06 03:23:42.140 INFO [stdout] test bench::generate_2 ... ok
Dec 06 03:23:42.559 INFO [stdout] test bench::generate_3 ... ok
Dec 06 03:23:44.636 INFO [stdout] test bench::generate_4 ... ok
Dec 06 03:23:44.636 INFO [stdout] 
Dec 06 03:23:44.636 INFO [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 03:23:44.636 INFO [stdout] 
Dec 06 03:23:44.638 INFO [stderr] su: No module specific data is present
Dec 06 03:23:44.966 INFO running `"docker" "inspect" "136868dc34abb2424f2a5167eaa5a73d62ad980cbf334066b3ae00a05757d0dc"`
Dec 06 03:23:45.087 INFO running `"docker" "rm" "-f" "136868dc34abb2424f2a5167eaa5a73d62ad980cbf334066b3ae00a05757d0dc"`
Dec 06 03:23:45.248 INFO [stdout] 136868dc34abb2424f2a5167eaa5a73d62ad980cbf334066b3ae00a05757d0dc