Dec 18 00:00:40.139 INFO checking furrykef/farce against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 00:00:40.139 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/furrykef/farce:/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 18 00:00:40.314 INFO [stdout] 986c841f9e16ac9c511193b1908ceabb991488c4f2148ae4bd065ead50831f9d
Dec 18 00:00:40.316 INFO running `"docker" "start" "-a" "986c841f9e16ac9c511193b1908ceabb991488c4f2148ae4bd065ead50831f9d"`
Dec 18 00:00:40.879 INFO [stderr]     Checking libc v0.2.24
Dec 18 00:00:41.692 INFO [stderr]     Checking memchr v1.0.1
Dec 18 00:00:41.970 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 18 00:00:42.640 INFO [stderr]     Checking regex v0.2.2
Dec 18 00:00:44.686 INFO [stderr]     Checking farce v0.1.0 (/opt/crater/workdir)
Dec 18 00:00:44.996 INFO [stderr] warning: unused import: `std::thread`
Dec 18 00:00:44.997 INFO [stderr]  --> src/engine_thread_manager.rs:3:5
Dec 18 00:00:44.997 INFO [stderr]   |
Dec 18 00:00:44.997 INFO [stderr] 3 | use std::thread;
Dec 18 00:00:44.998 INFO [stderr]   |     ^^^^^^^^^^^
Dec 18 00:00:44.998 INFO [stderr]   |
Dec 18 00:00:44.998 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 00:00:44.999 INFO [stderr] 
Dec 18 00:00:45.031 INFO [stderr] warning: unused import: `std::thread`
Dec 18 00:00:45.032 INFO [stderr]  --> src/engine_thread_manager.rs:3:5
Dec 18 00:00:45.032 INFO [stderr]   |
Dec 18 00:00:45.032 INFO [stderr] 3 | use std::thread;
Dec 18 00:00:45.032 INFO [stderr]   |     ^^^^^^^^^^^
Dec 18 00:00:45.032 INFO [stderr]   |
Dec 18 00:00:45.032 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 00:00:45.032 INFO [stderr] 
Dec 18 00:00:45.208 INFO [stderr] warning: unused variable: `rx`
Dec 18 00:00:45.208 INFO [stderr]   --> src/engine_thread_manager.rs:17:18
Dec 18 00:00:45.208 INFO [stderr]    |
Dec 18 00:00:45.208 INFO [stderr] 17 |         let (tx, rx) = mpsc::channel::<MessageToEngine>();
Dec 18 00:00:45.208 INFO [stderr]    |                  ^^ help: consider using `_rx` instead
Dec 18 00:00:45.208 INFO [stderr]    |
Dec 18 00:00:45.216 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 00:00:45.216 INFO [stderr] 
Dec 18 00:00:45.216 INFO [stderr] warning: unused variable: `tokens`
Dec 18 00:00:45.217 INFO [stderr]   --> src/engine_thread_manager.rs:24:26
Dec 18 00:00:45.217 INFO [stderr]    |
Dec 18 00:00:45.217 INFO [stderr] 24 |     pub fn cmd_go(&self, tokens: &mut SplitWhitespace) {
Dec 18 00:00:45.217 INFO [stderr]    |                          ^^^^^^ help: consider using `_tokens` instead
Dec 18 00:00:45.217 INFO [stderr] 
Dec 18 00:00:45.217 INFO [stderr] warning: unused variable: `tokens`
Dec 18 00:00:45.217 INFO [stderr]   --> src/engine_thread_manager.rs:36:32
Dec 18 00:00:45.217 INFO [stderr]    |
Dec 18 00:00:45.217 INFO [stderr] 36 |     pub fn cmd_position(&self, tokens: &mut SplitWhitespace) {
Dec 18 00:00:45.217 INFO [stderr]    |                                ^^^^^^ help: consider using `_tokens` instead
Dec 18 00:00:45.217 INFO [stderr] 
Dec 18 00:00:45.217 INFO [stderr] warning: unused variable: `tokens`
Dec 18 00:00:45.217 INFO [stderr]   --> src/engine_thread_manager.rs:40:33
Dec 18 00:00:45.217 INFO [stderr]    |
Dec 18 00:00:45.217 INFO [stderr] 40 |     pub fn cmd_setoption(&self, tokens: &mut SplitWhitespace) {
Dec 18 00:00:45.217 INFO [stderr]    |                                 ^^^^^^ help: consider using `_tokens` instead
Dec 18 00:00:45.217 INFO [stderr] 
Dec 18 00:00:45.260 INFO [stderr] warning: variant is never constructed: `White`
Dec 18 00:00:45.260 INFO [stderr]  --> src/color.rs:4:5
Dec 18 00:00:45.260 INFO [stderr]   |
Dec 18 00:00:45.260 INFO [stderr] 4 |     White,
Dec 18 00:00:45.260 INFO [stderr]   |     ^^^^^
Dec 18 00:00:45.260 INFO [stderr]   |
Dec 18 00:00:45.260 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 00:00:45.260 INFO [stderr] 
Dec 18 00:00:45.260 INFO [stderr] warning: variant is never constructed: `Black`
Dec 18 00:00:45.260 INFO [stderr]  --> src/color.rs:5:5
Dec 18 00:00:45.260 INFO [stderr]   |
Dec 18 00:00:45.260 INFO [stderr] 5 |     Black
Dec 18 00:00:45.260 INFO [stderr]   |     ^^^^^
Dec 18 00:00:45.260 INFO [stderr] 
Dec 18 00:00:45.261 INFO [stderr] warning: function is never used: `opposite_color`
Dec 18 00:00:45.261 INFO [stderr]  --> src/color.rs:9:1
Dec 18 00:00:45.261 INFO [stderr]   |
Dec 18 00:00:45.261 INFO [stderr] 9 | pub fn opposite_color(color: Color) -> Color {
Dec 18 00:00:45.261 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.261 INFO [stderr] 
Dec 18 00:00:45.261 INFO [stderr] warning: variant is never constructed: `Pawn`
Dec 18 00:00:45.261 INFO [stderr]  --> src/piece.rs:3:5
Dec 18 00:00:45.261 INFO [stderr]   |
Dec 18 00:00:45.261 INFO [stderr] 3 |     Pawn,
Dec 18 00:00:45.261 INFO [stderr]   |     ^^^^
Dec 18 00:00:45.262 INFO [stderr] 
Dec 18 00:00:45.262 INFO [stderr] warning: variant is never constructed: `Knight`
Dec 18 00:00:45.262 INFO [stderr]  --> src/piece.rs:4:5
Dec 18 00:00:45.262 INFO [stderr]   |
Dec 18 00:00:45.263 INFO [stderr] 4 |     Knight,
Dec 18 00:00:45.263 INFO [stderr]   |     ^^^^^^
Dec 18 00:00:45.263 INFO [stderr] 
Dec 18 00:00:45.263 INFO [stderr] warning: variant is never constructed: `Bishop`
Dec 18 00:00:45.263 INFO [stderr]  --> src/piece.rs:5:5
Dec 18 00:00:45.264 INFO [stderr]   |
Dec 18 00:00:45.264 INFO [stderr] 5 |     Bishop,
Dec 18 00:00:45.264 INFO [stderr]   |     ^^^^^^
Dec 18 00:00:45.264 INFO [stderr] 
Dec 18 00:00:45.265 INFO [stderr] warning: variant is never constructed: `Rook`
Dec 18 00:00:45.265 INFO [stderr]  --> src/piece.rs:6:5
Dec 18 00:00:45.265 INFO [stderr]   |
Dec 18 00:00:45.265 INFO [stderr] 6 |     Rook,
Dec 18 00:00:45.265 INFO [stderr]   |     ^^^^
Dec 18 00:00:45.266 INFO [stderr] 
Dec 18 00:00:45.266 INFO [stderr] warning: variant is never constructed: `Queen`
Dec 18 00:00:45.266 INFO [stderr]  --> src/piece.rs:7:5
Dec 18 00:00:45.266 INFO [stderr]   |
Dec 18 00:00:45.267 INFO [stderr] 7 |     Queen,
Dec 18 00:00:45.267 INFO [stderr]   |     ^^^^^
Dec 18 00:00:45.267 INFO [stderr] 
Dec 18 00:00:45.267 INFO [stderr] warning: variant is never constructed: `King`
Dec 18 00:00:45.268 INFO [stderr]  --> src/piece.rs:8:5
Dec 18 00:00:45.268 INFO [stderr]   |
Dec 18 00:00:45.268 INFO [stderr] 8 |     King
Dec 18 00:00:45.268 INFO [stderr]   |     ^^^^
Dec 18 00:00:45.268 INFO [stderr] 
Dec 18 00:00:45.269 INFO [stderr] warning: constant item is never used: `STARTPOS_FEN`
Dec 18 00:00:45.269 INFO [stderr]   --> src/position.rs:10:1
Dec 18 00:00:45.269 INFO [stderr]    |
Dec 18 00:00:45.269 INFO [stderr] 10 | const STARTPOS_FEN: &str = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
Dec 18 00:00:45.269 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.270 INFO [stderr] 
Dec 18 00:00:45.270 INFO [stderr] warning: variant is never constructed: `Empty`
Dec 18 00:00:45.270 INFO [stderr]   --> src/position.rs:33:5
Dec 18 00:00:45.270 INFO [stderr]    |
Dec 18 00:00:45.270 INFO [stderr] 33 |     Empty,
Dec 18 00:00:45.271 INFO [stderr]    |     ^^^^^
Dec 18 00:00:45.271 INFO [stderr] 
Dec 18 00:00:45.271 INFO [stderr] warning: variant is never constructed: `Piece`
Dec 18 00:00:45.271 INFO [stderr]   --> src/position.rs:34:5
Dec 18 00:00:45.271 INFO [stderr]    |
Dec 18 00:00:45.272 INFO [stderr] 34 |     Piece(PieceType, Color)
Dec 18 00:00:45.272 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.272 INFO [stderr] 
Dec 18 00:00:45.272 INFO [stderr] warning: method is never used: `new`
Dec 18 00:00:45.272 INFO [stderr]   --> src/position.rs:50:5
Dec 18 00:00:45.273 INFO [stderr]    |
Dec 18 00:00:45.273 INFO [stderr] 50 |     pub fn new() -> Position {
Dec 18 00:00:45.273 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.273 INFO [stderr] 
Dec 18 00:00:45.273 INFO [stderr] warning: method is never used: `from_fen`
Dec 18 00:00:45.274 INFO [stderr]   --> src/position.rs:58:5
Dec 18 00:00:45.274 INFO [stderr]    |
Dec 18 00:00:45.274 INFO [stderr] 58 |     pub fn from_fen(fen: &str) -> Position {
Dec 18 00:00:45.274 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.274 INFO [stderr] 
Dec 18 00:00:45.275 INFO [stderr] warning: method is never used: `make_move`
Dec 18 00:00:45.275 INFO [stderr]    --> src/position.rs:190:5
Dec 18 00:00:45.275 INFO [stderr]     |
Dec 18 00:00:45.275 INFO [stderr] 190 | /     pub fn make_move(&mut self,
Dec 18 00:00:45.275 INFO [stderr] 191 | |                      src: (usize, usize),
Dec 18 00:00:45.276 INFO [stderr] 192 | |                      dst: (usize, usize),
Dec 18 00:00:45.276 INFO [stderr] 193 | |                      promotion_type: Option<PieceType>) {
Dec 18 00:00:45.276 INFO [stderr] ...   |
Dec 18 00:00:45.276 INFO [stderr] 287 | |         self.side_to_move = opposite_color(self.side_to_move);
Dec 18 00:00:45.276 INFO [stderr] 288 | |     }
Dec 18 00:00:45.277 INFO [stderr]     | |_____^
Dec 18 00:00:45.277 INFO [stderr] 
Dec 18 00:00:45.277 INFO [stderr] warning: function is never used: `read_board_data`
Dec 18 00:00:45.277 INFO [stderr]    --> src/position.rs:299:1
Dec 18 00:00:45.277 INFO [stderr]     |
Dec 18 00:00:45.278 INFO [stderr] 299 | fn read_board_data(captures: &Captures) -> [[Cell; 8]; 8] {
Dec 18 00:00:45.278 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.278 INFO [stderr] 
Dec 18 00:00:45.278 INFO [stderr] warning: function is never used: `can_piece_move_into_cell`
Dec 18 00:00:45.278 INFO [stderr]    --> src/position.rs:331:1
Dec 18 00:00:45.279 INFO [stderr]     |
Dec 18 00:00:45.279 INFO [stderr] 331 | pub fn can_piece_move_into_cell(cell: Cell, my_color: Color) -> bool {
Dec 18 00:00:45.279 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.279 INFO [stderr] 
Dec 18 00:00:45.279 INFO [stderr] warning: function is never used: `parse_algebraic_coords`
Dec 18 00:00:45.280 INFO [stderr]    --> src/position.rs:340:1
Dec 18 00:00:45.280 INFO [stderr]     |
Dec 18 00:00:45.280 INFO [stderr] 340 | fn parse_algebraic_coords(coords: &str) -> (usize, usize) {
Dec 18 00:00:45.280 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.280 INFO [stderr] 
Dec 18 00:00:45.380 INFO [stderr] warning: unused variable: `rx`
Dec 18 00:00:45.380 INFO [stderr]   --> src/engine_thread_manager.rs:17:18
Dec 18 00:00:45.381 INFO [stderr]    |
Dec 18 00:00:45.381 INFO [stderr] 17 |         let (tx, rx) = mpsc::channel::<MessageToEngine>();
Dec 18 00:00:45.381 INFO [stderr]    |                  ^^ help: consider using `_rx` instead
Dec 18 00:00:45.381 INFO [stderr]    |
Dec 18 00:00:45.382 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 00:00:45.382 INFO [stderr] 
Dec 18 00:00:45.382 INFO [stderr] warning: unused variable: `tokens`
Dec 18 00:00:45.382 INFO [stderr]   --> src/engine_thread_manager.rs:24:26
Dec 18 00:00:45.382 INFO [stderr]    |
Dec 18 00:00:45.383 INFO [stderr] 24 |     pub fn cmd_go(&self, tokens: &mut SplitWhitespace) {
Dec 18 00:00:45.383 INFO [stderr]    |                          ^^^^^^ help: consider using `_tokens` instead
Dec 18 00:00:45.383 INFO [stderr] 
Dec 18 00:00:45.383 INFO [stderr] warning: unused variable: `tokens`
Dec 18 00:00:45.383 INFO [stderr]   --> src/engine_thread_manager.rs:36:32
Dec 18 00:00:45.384 INFO [stderr]    |
Dec 18 00:00:45.384 INFO [stderr] 36 |     pub fn cmd_position(&self, tokens: &mut SplitWhitespace) {
Dec 18 00:00:45.384 INFO [stderr]    |                                ^^^^^^ help: consider using `_tokens` instead
Dec 18 00:00:45.384 INFO [stderr] 
Dec 18 00:00:45.384 INFO [stderr] warning: unused variable: `tokens`
Dec 18 00:00:45.385 INFO [stderr]   --> src/engine_thread_manager.rs:40:33
Dec 18 00:00:45.385 INFO [stderr]    |
Dec 18 00:00:45.385 INFO [stderr] 40 |     pub fn cmd_setoption(&self, tokens: &mut SplitWhitespace) {
Dec 18 00:00:45.385 INFO [stderr]    |                                 ^^^^^^ help: consider using `_tokens` instead
Dec 18 00:00:45.385 INFO [stderr] 
Dec 18 00:00:45.429 INFO [stderr] warning: function is never used: `can_piece_move_into_cell`
Dec 18 00:00:45.430 INFO [stderr]    --> src/position.rs:331:1
Dec 18 00:00:45.430 INFO [stderr]     |
Dec 18 00:00:45.430 INFO [stderr] 331 | pub fn can_piece_move_into_cell(cell: Cell, my_color: Color) -> bool {
Dec 18 00:00:45.430 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:00:45.430 INFO [stderr]     |
Dec 18 00:00:45.431 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 00:00:45.431 INFO [stderr] 
Dec 18 00:00:45.501 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.64s
Dec 18 00:00:46.719 INFO running `"docker" "inspect" "986c841f9e16ac9c511193b1908ceabb991488c4f2148ae4bd065ead50831f9d"`
Dec 18 00:00:47.020 INFO running `"docker" "rm" "-f" "986c841f9e16ac9c511193b1908ceabb991488c4f2148ae4bd065ead50831f9d"`
Dec 18 00:00:47.376 INFO [stdout] 986c841f9e16ac9c511193b1908ceabb991488c4f2148ae4bd065ead50831f9d