[INFO] updating cached repository ieiriyuki/my-rust-reversi [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/ieiriyuki/my-rust-reversi [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/ieiriyuki/my-rust-reversi" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/ieiriyuki/my-rust-reversi"` [INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/ieiriyuki/my-rust-reversi'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/ieiriyuki/my-rust-reversi" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ieiriyuki/my-rust-reversi"` [INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ieiriyuki/my-rust-reversi'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8cb601080df78b26dc586f1645d4830f5cb663b3 [INFO] sha for GitHub repo ieiriyuki/my-rust-reversi: 8cb601080df78b26dc586f1645d4830f5cb663b3 [INFO] validating manifest of ieiriyuki/my-rust-reversi 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 ieiriyuki/my-rust-reversi 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 ieiriyuki/my-rust-reversi [INFO] finished frobbing ieiriyuki/my-rust-reversi [INFO] frobbed toml for ieiriyuki/my-rust-reversi written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/ieiriyuki/my-rust-reversi/Cargo.toml [INFO] started frobbing ieiriyuki/my-rust-reversi [INFO] finished frobbing ieiriyuki/my-rust-reversi [INFO] frobbed toml for ieiriyuki/my-rust-reversi written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ieiriyuki/my-rust-reversi/Cargo.toml [INFO] crate ieiriyuki/my-rust-reversi 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 ieiriyuki/my-rust-reversi against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-5/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/ieiriyuki/my-rust-reversi:/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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] de899a2e0473bd219e08fa47e11b679f5afe66af24be0b2f50ec7f06583facb4 [INFO] running `"docker" "start" "-a" "de899a2e0473bd219e08fa47e11b679f5afe66af24be0b2f50ec7f06583facb4"` [INFO] [stderr] Checking reversi v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `rhs` [INFO] [stderr] --> src/coord.rs:11:18 [INFO] [stderr] | [INFO] [stderr] 11 | fn add(self, rhs: Self) -> Self::Output { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_rhs` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rhs` [INFO] [stderr] --> src/coord.rs:17:30 [INFO] [stderr] | [INFO] [stderr] 17 | fn add_assign(&mut self, rhs: Self) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_rhs` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/board.rs:50:21 [INFO] [stderr] | [INFO] [stderr] 50 | fn index(&self, index: Coord) -> &Self::Output { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/board.rs:59:29 [INFO] [stderr] | [INFO] [stderr] 59 | fn index_mut(&mut self, index: Coord) -> &mut Self::Output { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:153:24 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pos` [INFO] [stderr] --> src/board.rs:153:42 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_pos` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dir` [INFO] [stderr] --> src/board.rs:153:54 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_dir` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:160:24 [INFO] [stderr] | [INFO] [stderr] 160 | fn get_move(&self, piece: Piece, pos: Coord) -> Move { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pos` [INFO] [stderr] --> src/board.rs:160:38 [INFO] [stderr] | [INFO] [stderr] 160 | fn get_move(&self, piece: Piece, pos: Coord) -> Move { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_pos` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:167:25 [INFO] [stderr] | [INFO] [stderr] 167 | pub fn moves(&self, piece: Piece) -> Moves { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:172:29 [INFO] [stderr] | [INFO] [stderr] 172 | fn count_mut(&mut self, piece: Piece) -> &mut u8 { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:184:27 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pos` [INFO] [stderr] --> src/board.rs:184:45 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_pos` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dir` [INFO] [stderr] --> src/board.rs:184:57 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_dir` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `flip` [INFO] [stderr] --> src/board.rs:184:69 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_flip` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:189:31 [INFO] [stderr] | [INFO] [stderr] 189 | pub fn do_move(&mut self, piece: Piece, mov: &Move) { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `mov` [INFO] [stderr] --> src/board.rs:189:45 [INFO] [stderr] | [INFO] [stderr] 189 | pub fn do_move(&mut self, piece: Piece, mov: &Move) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_mov` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/board.rs:153:38 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/board.rs:184:41 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: method is never used: `is_in_range` [INFO] [stderr] --> src/board.rs:34:5 [INFO] [stderr] | [INFO] [stderr] 34 | pub fn is_in_range(&self, pos: Coord) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `size` [INFO] [stderr] --> src/board.rs:40:5 [INFO] [stderr] | [INFO] [stderr] 40 | pub fn size(&self) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant item is never used: `ZERO_FLIP` [INFO] [stderr] --> src/board.rs:85:1 [INFO] [stderr] | [INFO] [stderr] 85 | const ZERO_FLIP: [u8; 8] = [0, 0, 0, 0, 0, 0, 0, 0]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `is_legal` [INFO] [stderr] --> src/board.rs:101:5 [INFO] [stderr] | [INFO] [stderr] 101 | pub fn is_legal(&self) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant item is never used: `DIRECTIONS` [INFO] [stderr] --> src/board.rs:120:1 [INFO] [stderr] | [INFO] [stderr] 120 | / const DIRECTIONS: [Coord; 8] = [ [INFO] [stderr] 121 | | Coord(-1, -1), //左上 [INFO] [stderr] 122 | | Coord(0, -1), //真上 [INFO] [stderr] 123 | | Coord(1, -1), //右上 [INFO] [stderr] ... | [INFO] [stderr] 128 | | Coord(1, 1), //右下 [INFO] [stderr] 129 | | ]; [INFO] [stderr] | |__^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_flip` [INFO] [stderr] --> src/board.rs:153:5 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `get_move` [INFO] [stderr] --> src/board.rs:160:5 [INFO] [stderr] | [INFO] [stderr] 160 | fn get_move(&self, piece: Piece, pos: Coord) -> Move { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `count_mut` [INFO] [stderr] --> src/board.rs:172:5 [INFO] [stderr] | [INFO] [stderr] 172 | fn count_mut(&mut self, piece: Piece) -> &mut u8 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `do_flip` [INFO] [stderr] --> src/board.rs:184:5 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `DumbPlayer` [INFO] [stderr] --> src/players/dumb.rs:5:1 [INFO] [stderr] | [INFO] [stderr] 5 | pub struct DumbPlayer; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/players/negamax.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | pub fn new(depth: usize) -> Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rhs` [INFO] [stderr] --> src/coord.rs:11:18 [INFO] [stderr] | [INFO] [stderr] 11 | fn add(self, rhs: Self) -> Self::Output { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_rhs` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rhs` [INFO] [stderr] --> src/coord.rs:17:30 [INFO] [stderr] | [INFO] [stderr] 17 | fn add_assign(&mut self, rhs: Self) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_rhs` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/board.rs:50:21 [INFO] [stderr] | [INFO] [stderr] 50 | fn index(&self, index: Coord) -> &Self::Output { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `index` [INFO] [stderr] --> src/board.rs:59:29 [INFO] [stderr] | [INFO] [stderr] 59 | fn index_mut(&mut self, index: Coord) -> &mut Self::Output { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_index` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:153:24 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pos` [INFO] [stderr] --> src/board.rs:153:42 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_pos` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dir` [INFO] [stderr] --> src/board.rs:153:54 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_dir` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:160:24 [INFO] [stderr] | [INFO] [stderr] 160 | fn get_move(&self, piece: Piece, pos: Coord) -> Move { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pos` [INFO] [stderr] --> src/board.rs:160:38 [INFO] [stderr] | [INFO] [stderr] 160 | fn get_move(&self, piece: Piece, pos: Coord) -> Move { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_pos` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:167:25 [INFO] [stderr] | [INFO] [stderr] 167 | pub fn moves(&self, piece: Piece) -> Moves { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:172:29 [INFO] [stderr] | [INFO] [stderr] 172 | fn count_mut(&mut self, piece: Piece) -> &mut u8 { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:184:27 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `pos` [INFO] [stderr] --> src/board.rs:184:45 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_pos` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `dir` [INFO] [stderr] --> src/board.rs:184:57 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_dir` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `flip` [INFO] [stderr] --> src/board.rs:184:69 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_flip` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece` [INFO] [stderr] --> src/board.rs:189:31 [INFO] [stderr] | [INFO] [stderr] 189 | pub fn do_move(&mut self, piece: Piece, mov: &Move) { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_piece` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `mov` [INFO] [stderr] --> src/board.rs:189:45 [INFO] [stderr] | [INFO] [stderr] 189 | pub fn do_move(&mut self, piece: Piece, mov: &Move) { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_mov` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/board.rs:153:38 [INFO] [stderr] | [INFO] [stderr] 153 | fn get_flip(&self, piece: Piece, mut pos: Coord, dir: Coord) -> u8 { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/board.rs:184:41 [INFO] [stderr] | [INFO] [stderr] 184 | fn do_flip(&mut self, piece: Piece, mut pos: Coord, dir: Coord, flip: u8) { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: constant item is never used: `DIRECTIONS` [INFO] [stderr] --> src/board.rs:120:1 [INFO] [stderr] | [INFO] [stderr] 120 | / const DIRECTIONS: [Coord; 8] = [ [INFO] [stderr] 121 | | Coord(-1, -1), //左上 [INFO] [stderr] 122 | | Coord(0, -1), //真上 [INFO] [stderr] 123 | | Coord(1, -1), //右上 [INFO] [stderr] ... | [INFO] [stderr] 128 | | Coord(1, 1), //右下 [INFO] [stderr] 129 | | ]; [INFO] [stderr] | |__^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `DumbPlayer` [INFO] [stderr] --> src/players/dumb.rs:5:1 [INFO] [stderr] | [INFO] [stderr] 5 | pub struct DumbPlayer; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/players/negamax.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | pub fn new(depth: usize) -> Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.04s [INFO] running `"docker" "inspect" "de899a2e0473bd219e08fa47e11b679f5afe66af24be0b2f50ec7f06583facb4"` [INFO] running `"docker" "rm" "-f" "de899a2e0473bd219e08fa47e11b679f5afe66af24be0b2f50ec7f06583facb4"` [INFO] [stdout] de899a2e0473bd219e08fa47e11b679f5afe66af24be0b2f50ec7f06583facb4