[INFO] updating cached repository furrykef/farce
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/furrykef/farce
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/furrykef/farce" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/furrykef/farce"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/furrykef/farce'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/furrykef/farce" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/furrykef/farce"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/furrykef/farce'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 87be94c2d4d27c4158ba9394e33d6fd942edf148
[INFO] sha for GitHub repo furrykef/farce: 87be94c2d4d27c4158ba9394e33d6fd942edf148
[INFO] validating manifest of furrykef/farce on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of furrykef/farce on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing furrykef/farce
[INFO] finished frobbing furrykef/farce
[INFO] frobbed toml for furrykef/farce written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/furrykef/farce/Cargo.toml
[INFO] started frobbing furrykef/farce
[INFO] finished frobbing furrykef/farce
[INFO] frobbed toml for furrykef/farce written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/furrykef/farce/Cargo.toml
[INFO] crate furrykef/farce already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking furrykef/farce against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-6/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/furrykef/farce:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 98d4a49ea63c2ced98f71cc3ced397bdd2d5e79d3979cf75a2bf1193f40ec2cc
[INFO] running `"docker" "start" "-a" "98d4a49ea63c2ced98f71cc3ced397bdd2d5e79d3979cf75a2bf1193f40ec2cc"`
[INFO] [stderr]     Checking farce v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/engine_thread_manager.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/engine_thread_manager.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]   --> src/engine_thread_manager.rs:17:18
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let (tx, rx) = mpsc::channel::<MessageToEngine>();
[INFO] [stderr]    |                  ^^ help: consider prefixing with an underscore: `_rx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/engine_thread_manager.rs:24:26
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn cmd_go(&self, tokens: &mut SplitWhitespace) {
[INFO] [stderr]    |                          ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/engine_thread_manager.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn cmd_position(&self, tokens: &mut SplitWhitespace) {
[INFO] [stderr]    |                                ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/engine_thread_manager.rs:40:33
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn cmd_setoption(&self, tokens: &mut SplitWhitespace) {
[INFO] [stderr]    |                                 ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `White`
[INFO] [stderr]  --> src/color.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     White,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr]   --> src/engine_thread_manager.rs:17:18
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let (tx, rx) = mpsc::channel::<MessageToEngine>();
[INFO] [stderr]    |                  ^^ help: consider prefixing with an underscore: `_rx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/engine_thread_manager.rs:24:26
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn cmd_go(&self, tokens: &mut SplitWhitespace) {
[INFO] [stderr]    |                          ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]  --> src/color.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Black
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr] warning: function is never used: `opposite_color`
[INFO] [stderr]  --> src/color.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn opposite_color(color: Color) -> Color {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]   --> src/engine_thread_manager.rs:36:32
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn cmd_position(&self, tokens: &mut SplitWhitespace) {
[INFO] [stderr]    |                                ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pawn`
[INFO] [stderr]  --> src/piece.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Pawn,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr] warning: variant is never constructed: `Knight`
[INFO] [stderr]  --> src/piece.rs:4:5
[INFO] [stderr]   --> src/engine_thread_manager.rs:40:33
[INFO] [stderr]    |
[INFO] [stderr]   |
[INFO] [stderr] 40 |     pub fn cmd_setoption(&self, tokens: &mut SplitWhitespace) {
[INFO] [stderr] 4 |     Knight,
[INFO] [stderr]    |                                 ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bishop`
[INFO] [stderr]  --> src/piece.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Bishop,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Rook`
[INFO] [stderr]  --> src/piece.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Rook,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]  --> src/piece.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Queen,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]  --> src/piece.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     King
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `STARTPOS_FEN`
[INFO] [stderr]   --> src/position.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const STARTPOS_FEN: &str = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Empty`
[INFO] [stderr]   --> src/position.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Empty,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Piece`
[INFO] [stderr]   --> src/position.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Piece(PieceType, Color)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/position.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub fn new() -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_fen`
[INFO] [stderr]   --> src/position.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn from_fen(fen: &str) -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `make_move`
[INFO] [stderr]    --> src/position.rs:190:5
[INFO] [stderr]     |
[INFO] [stderr] 190 | /     pub fn make_move(&mut self,
[INFO] [stderr] 191 | |                      src: (usize, usize),
[INFO] [stderr] 192 | |                      dst: (usize, usize),
[INFO] [stderr] 193 | |                      promotion_type: Option<PieceType>) {
[INFO] [stderr] ...   |
[INFO] [stderr] 287 | |         self.side_to_move = opposite_color(self.side_to_move);
[INFO] [stderr] 288 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_board_data`
[INFO] [stderr]    --> src/position.rs:299:1
[INFO] [stderr]     |
[INFO] [stderr] 299 | fn read_board_data(captures: &Captures) -> [[Cell; 8]; 8] {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `can_piece_move_into_cell`
[INFO] [stderr]    --> src/position.rs:331:1
[INFO] [stderr]     |
[INFO] [stderr] 331 | pub fn can_piece_move_into_cell(cell: Cell, my_color: Color) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_algebraic_coords`
[INFO] [stderr]    --> src/position.rs:340:1
[INFO] [stderr]     |
[INFO] [stderr] 340 | fn parse_algebraic_coords(coords: &str) -> (usize, usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `can_piece_move_into_cell`
[INFO] [stderr]    --> src/position.rs:331:1
[INFO] [stderr]     |
[INFO] [stderr] 331 | pub fn can_piece_move_into_cell(cell: Cell, my_color: Color) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "98d4a49ea63c2ced98f71cc3ced397bdd2d5e79d3979cf75a2bf1193f40ec2cc"`
[INFO] running `"docker" "rm" "-f" "98d4a49ea63c2ced98f71cc3ced397bdd2d5e79d3979cf75a2bf1193f40ec2cc"`
[INFO] [stdout] 98d4a49ea63c2ced98f71cc3ced397bdd2d5e79d3979cf75a2bf1193f40ec2cc