Dec 04 18:24:06.237 INFO checking furrykef/farce against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 18:24:06.237 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 18:24:06.543 INFO [stdout] def87e61e1f0ee6c4c1878bf32d724b25e1b00e8d541325b8e47c34fbcaca71c
Dec 04 18:24:06.545 INFO running `"docker" "start" "-a" "def87e61e1f0ee6c4c1878bf32d724b25e1b00e8d541325b8e47c34fbcaca71c"`
Dec 04 18:24:07.055 INFO [stderr] usermod: no changes
Dec 04 18:24:07.139 INFO [stderr]     Checking libc v0.2.24
Dec 04 18:24:08.095 INFO [stderr]     Checking memchr v1.0.1
Dec 04 18:24:08.470 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 04 18:24:09.191 INFO [stderr]     Checking regex v0.2.2
Dec 04 18:24:11.503 INFO [stderr]     Checking farce v0.1.0 (/source)
Dec 04 18:24:12.053 INFO [stderr] warning: unused import: `std::thread`
Dec 04 18:24:12.053 INFO [stderr]  --> src/engine_thread_manager.rs:3:5
Dec 04 18:24:12.053 INFO [stderr]   |
Dec 04 18:24:12.053 INFO [stderr] 3 | use std::thread;
Dec 04 18:24:12.053 INFO [stderr]   |     ^^^^^^^^^^^
Dec 04 18:24:12.053 INFO [stderr]   |
Dec 04 18:24:12.053 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 18:24:12.053 INFO [stderr] 
Dec 04 18:24:12.239 INFO [stderr] warning: unused variable: `rx`
Dec 04 18:24:12.239 INFO [stderr]   --> src/engine_thread_manager.rs:17:18
Dec 04 18:24:12.239 INFO [stderr]    |
Dec 04 18:24:12.239 INFO [stderr] 17 |         let (tx, rx) = mpsc::channel::<MessageToEngine>();
Dec 04 18:24:12.239 INFO [stderr]    |                  ^^ help: consider using `_rx` instead
Dec 04 18:24:12.239 INFO [stderr]    |
Dec 04 18:24:12.239 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:24:12.239 INFO [stderr] 
Dec 04 18:24:12.239 INFO [stderr] warning: unused variable: `tokens`
Dec 04 18:24:12.239 INFO [stderr]   --> src/engine_thread_manager.rs:24:26
Dec 04 18:24:12.239 INFO [stderr]    |
Dec 04 18:24:12.239 INFO [stderr] 24 |     pub fn cmd_go(&self, tokens: &mut SplitWhitespace) {
Dec 04 18:24:12.239 INFO [stderr]    |                          ^^^^^^ help: consider using `_tokens` instead
Dec 04 18:24:12.239 INFO [stderr] 
Dec 04 18:24:12.239 INFO [stderr] warning: unused variable: `tokens`
Dec 04 18:24:12.239 INFO [stderr]   --> src/engine_thread_manager.rs:36:32
Dec 04 18:24:12.239 INFO [stderr]    |
Dec 04 18:24:12.239 INFO [stderr] 36 |     pub fn cmd_position(&self, tokens: &mut SplitWhitespace) {
Dec 04 18:24:12.239 INFO [stderr]    |                                ^^^^^^ help: consider using `_tokens` instead
Dec 04 18:24:12.239 INFO [stderr] 
Dec 04 18:24:12.239 INFO [stderr] warning: unused variable: `tokens`
Dec 04 18:24:12.239 INFO [stderr]   --> src/engine_thread_manager.rs:40:33
Dec 04 18:24:12.239 INFO [stderr]    |
Dec 04 18:24:12.239 INFO [stderr] 40 |     pub fn cmd_setoption(&self, tokens: &mut SplitWhitespace) {
Dec 04 18:24:12.239 INFO [stderr]    |                                 ^^^^^^ help: consider using `_tokens` instead
Dec 04 18:24:12.239 INFO [stderr] 
Dec 04 18:24:12.281 INFO [stderr] warning: variant is never constructed: `White`
Dec 04 18:24:12.281 INFO [stderr]  --> src/color.rs:4:5
Dec 04 18:24:12.281 INFO [stderr]   |
Dec 04 18:24:12.281 INFO [stderr] 4 |     White,
Dec 04 18:24:12.281 INFO [stderr]   |     ^^^^^
Dec 04 18:24:12.281 INFO [stderr]   |
Dec 04 18:24:12.281 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 18:24:12.281 INFO [stderr] 
Dec 04 18:24:12.281 INFO [stderr] warning: variant is never constructed: `Black`
Dec 04 18:24:12.281 INFO [stderr]  --> src/color.rs:5:5
Dec 04 18:24:12.281 INFO [stderr]   |
Dec 04 18:24:12.281 INFO [stderr] 5 |     Black
Dec 04 18:24:12.281 INFO [stderr]   |     ^^^^^
Dec 04 18:24:12.281 INFO [stderr] 
Dec 04 18:24:12.281 INFO [stderr] warning: function is never used: `opposite_color`
Dec 04 18:24:12.281 INFO [stderr]  --> src/color.rs:9:1
Dec 04 18:24:12.281 INFO [stderr]   |
Dec 04 18:24:12.281 INFO [stderr] 9 | pub fn opposite_color(color: Color) -> Color {
Dec 04 18:24:12.281 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.282 INFO [stderr] warning: variant is never constructed: `Pawn`
Dec 04 18:24:12.282 INFO [stderr]  --> src/piece.rs:3:5
Dec 04 18:24:12.282 INFO [stderr]   |
Dec 04 18:24:12.282 INFO [stderr] 3 |     Pawn,
Dec 04 18:24:12.282 INFO [stderr]   |     ^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.282 INFO [stderr] warning: variant is never constructed: `Knight`
Dec 04 18:24:12.282 INFO [stderr]  --> src/piece.rs:4:5
Dec 04 18:24:12.282 INFO [stderr]   |
Dec 04 18:24:12.282 INFO [stderr] 4 |     Knight,
Dec 04 18:24:12.282 INFO [stderr]   |     ^^^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.282 INFO [stderr] warning: variant is never constructed: `Bishop`
Dec 04 18:24:12.282 INFO [stderr]  --> src/piece.rs:5:5
Dec 04 18:24:12.282 INFO [stderr]   |
Dec 04 18:24:12.282 INFO [stderr] 5 |     Bishop,
Dec 04 18:24:12.282 INFO [stderr]   |     ^^^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.282 INFO [stderr] warning: variant is never constructed: `Rook`
Dec 04 18:24:12.282 INFO [stderr]  --> src/piece.rs:6:5
Dec 04 18:24:12.282 INFO [stderr]   |
Dec 04 18:24:12.282 INFO [stderr] 6 |     Rook,
Dec 04 18:24:12.282 INFO [stderr]   |     ^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.282 INFO [stderr] warning: variant is never constructed: `Queen`
Dec 04 18:24:12.282 INFO [stderr]  --> src/piece.rs:7:5
Dec 04 18:24:12.282 INFO [stderr]   |
Dec 04 18:24:12.282 INFO [stderr] 7 |     Queen,
Dec 04 18:24:12.282 INFO [stderr]   |     ^^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.282 INFO [stderr] warning: variant is never constructed: `King`
Dec 04 18:24:12.282 INFO [stderr]  --> src/piece.rs:8:5
Dec 04 18:24:12.282 INFO [stderr]   |
Dec 04 18:24:12.282 INFO [stderr] 8 |     King
Dec 04 18:24:12.282 INFO [stderr]   |     ^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.282 INFO [stderr] warning: constant item is never used: `STARTPOS_FEN`
Dec 04 18:24:12.282 INFO [stderr]   --> src/position.rs:10:1
Dec 04 18:24:12.282 INFO [stderr]    |
Dec 04 18:24:12.282 INFO [stderr] 10 | const STARTPOS_FEN: &str = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
Dec 04 18:24:12.282 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.282 INFO [stderr] 
Dec 04 18:24:12.283 INFO [stderr] warning: variant is never constructed: `Empty`
Dec 04 18:24:12.283 INFO [stderr]   --> src/position.rs:33:5
Dec 04 18:24:12.283 INFO [stderr]    |
Dec 04 18:24:12.283 INFO [stderr] 33 |     Empty,
Dec 04 18:24:12.283 INFO [stderr]    |     ^^^^^
Dec 04 18:24:12.283 INFO [stderr] 
Dec 04 18:24:12.283 INFO [stderr] warning: variant is never constructed: `Piece`
Dec 04 18:24:12.283 INFO [stderr]   --> src/position.rs:34:5
Dec 04 18:24:12.283 INFO [stderr]    |
Dec 04 18:24:12.283 INFO [stderr] 34 |     Piece(PieceType, Color)
Dec 04 18:24:12.283 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.283 INFO [stderr] 
Dec 04 18:24:12.284 INFO [stderr] warning: method is never used: `new`
Dec 04 18:24:12.284 INFO [stderr]   --> src/position.rs:50:5
Dec 04 18:24:12.284 INFO [stderr]    |
Dec 04 18:24:12.284 INFO [stderr] 50 |     pub fn new() -> Position {
Dec 04 18:24:12.284 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.284 INFO [stderr] 
Dec 04 18:24:12.284 INFO [stderr] warning: method is never used: `from_fen`
Dec 04 18:24:12.284 INFO [stderr]   --> src/position.rs:58:5
Dec 04 18:24:12.284 INFO [stderr]    |
Dec 04 18:24:12.284 INFO [stderr] 58 |     pub fn from_fen(fen: &str) -> Position {
Dec 04 18:24:12.284 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.284 INFO [stderr] 
Dec 04 18:24:12.285 INFO [stderr] warning: method is never used: `make_move`
Dec 04 18:24:12.285 INFO [stderr]    --> src/position.rs:190:5
Dec 04 18:24:12.285 INFO [stderr]     |
Dec 04 18:24:12.285 INFO [stderr] 190 | /     pub fn make_move(&mut self,
Dec 04 18:24:12.285 INFO [stderr] 191 | |                      src: (usize, usize),
Dec 04 18:24:12.285 INFO [stderr] 192 | |                      dst: (usize, usize),
Dec 04 18:24:12.285 INFO [stderr] 193 | |                      promotion_type: Option<PieceType>) {
Dec 04 18:24:12.285 INFO [stderr] ...   |
Dec 04 18:24:12.285 INFO [stderr] 287 | |         self.side_to_move = opposite_color(self.side_to_move);
Dec 04 18:24:12.285 INFO [stderr] 288 | |     }
Dec 04 18:24:12.285 INFO [stderr]     | |_____^
Dec 04 18:24:12.285 INFO [stderr] 
Dec 04 18:24:12.285 INFO [stderr] warning: function is never used: `read_board_data`
Dec 04 18:24:12.285 INFO [stderr]    --> src/position.rs:299:1
Dec 04 18:24:12.285 INFO [stderr]     |
Dec 04 18:24:12.285 INFO [stderr] 299 | fn read_board_data(captures: &Captures) -> [[Cell; 8]; 8] {
Dec 04 18:24:12.285 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.285 INFO [stderr] 
Dec 04 18:24:12.286 INFO [stderr] warning: function is never used: `can_piece_move_into_cell`
Dec 04 18:24:12.286 INFO [stderr]    --> src/position.rs:331:1
Dec 04 18:24:12.286 INFO [stderr]     |
Dec 04 18:24:12.286 INFO [stderr] 331 | pub fn can_piece_move_into_cell(cell: Cell, my_color: Color) -> bool {
Dec 04 18:24:12.286 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.286 INFO [stderr] 
Dec 04 18:24:12.287 INFO [stderr] warning: function is never used: `parse_algebraic_coords`
Dec 04 18:24:12.287 INFO [stderr]    --> src/position.rs:340:1
Dec 04 18:24:12.287 INFO [stderr]     |
Dec 04 18:24:12.287 INFO [stderr] 340 | fn parse_algebraic_coords(coords: &str) -> (usize, usize) {
Dec 04 18:24:12.287 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.287 INFO [stderr] 
Dec 04 18:24:12.631 INFO [stderr] warning: unused import: `std::thread`
Dec 04 18:24:12.631 INFO [stderr]  --> src/engine_thread_manager.rs:3:5
Dec 04 18:24:12.631 INFO [stderr]   |
Dec 04 18:24:12.631 INFO [stderr] 3 | use std::thread;
Dec 04 18:24:12.631 INFO [stderr]   |     ^^^^^^^^^^^
Dec 04 18:24:12.631 INFO [stderr]   |
Dec 04 18:24:12.631 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 18:24:12.631 INFO [stderr] 
Dec 04 18:24:12.807 INFO [stderr] warning: unused variable: `rx`
Dec 04 18:24:12.807 INFO [stderr]   --> src/engine_thread_manager.rs:17:18
Dec 04 18:24:12.807 INFO [stderr]    |
Dec 04 18:24:12.807 INFO [stderr] 17 |         let (tx, rx) = mpsc::channel::<MessageToEngine>();
Dec 04 18:24:12.807 INFO [stderr]    |                  ^^ help: consider using `_rx` instead
Dec 04 18:24:12.807 INFO [stderr]    |
Dec 04 18:24:12.807 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:24:12.807 INFO [stderr] 
Dec 04 18:24:12.807 INFO [stderr] warning: unused variable: `tokens`
Dec 04 18:24:12.807 INFO [stderr]   --> src/engine_thread_manager.rs:24:26
Dec 04 18:24:12.807 INFO [stderr]    |
Dec 04 18:24:12.807 INFO [stderr] 24 |     pub fn cmd_go(&self, tokens: &mut SplitWhitespace) {
Dec 04 18:24:12.807 INFO [stderr]    |                          ^^^^^^ help: consider using `_tokens` instead
Dec 04 18:24:12.807 INFO [stderr] 
Dec 04 18:24:12.807 INFO [stderr] warning: unused variable: `tokens`
Dec 04 18:24:12.807 INFO [stderr]   --> src/engine_thread_manager.rs:36:32
Dec 04 18:24:12.807 INFO [stderr]    |
Dec 04 18:24:12.807 INFO [stderr] 36 |     pub fn cmd_position(&self, tokens: &mut SplitWhitespace) {
Dec 04 18:24:12.807 INFO [stderr]    |                                ^^^^^^ help: consider using `_tokens` instead
Dec 04 18:24:12.807 INFO [stderr] 
Dec 04 18:24:12.807 INFO [stderr] warning: unused variable: `tokens`
Dec 04 18:24:12.807 INFO [stderr]   --> src/engine_thread_manager.rs:40:33
Dec 04 18:24:12.807 INFO [stderr]    |
Dec 04 18:24:12.807 INFO [stderr] 40 |     pub fn cmd_setoption(&self, tokens: &mut SplitWhitespace) {
Dec 04 18:24:12.807 INFO [stderr]    |                                 ^^^^^^ help: consider using `_tokens` instead
Dec 04 18:24:12.807 INFO [stderr] 
Dec 04 18:24:12.875 INFO [stderr] warning: function is never used: `can_piece_move_into_cell`
Dec 04 18:24:12.875 INFO [stderr]    --> src/position.rs:331:1
Dec 04 18:24:12.875 INFO [stderr]     |
Dec 04 18:24:12.875 INFO [stderr] 331 | pub fn can_piece_move_into_cell(cell: Cell, my_color: Color) -> bool {
Dec 04 18:24:12.875 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 18:24:12.875 INFO [stderr]     |
Dec 04 18:24:12.875 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 18:24:12.875 INFO [stderr] 
Dec 04 18:24:12.901 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.82s
Dec 04 18:24:12.904 INFO [stderr] su: No module specific data is present
Dec 04 18:24:14.076 INFO running `"docker" "inspect" "def87e61e1f0ee6c4c1878bf32d724b25e1b00e8d541325b8e47c34fbcaca71c"`
Dec 04 18:24:14.359 INFO running `"docker" "rm" "-f" "def87e61e1f0ee6c4c1878bf32d724b25e1b00e8d541325b8e47c34fbcaca71c"`
Dec 04 18:24:14.730 INFO [stdout] def87e61e1f0ee6c4c1878bf32d724b25e1b00e8d541325b8e47c34fbcaca71c