[INFO] cloning repository https://github.com/superosku/block-game-solver [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/superosku/block-game-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuperosku%2Fblock-game-solver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuperosku%2Fblock-game-solver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f39d4c541ff53bd3b86ae693b370bf3071dd25f9 [INFO] testing superosku/block-game-solver against master#0d13f6afeba4935499abe0c9a07426c94492c94e for pr-96025 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuperosku%2Fblock-game-solver" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/superosku/block-game-solver on toolchain 0d13f6afeba4935499abe0c9a07426c94492c94e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/superosku/block-game-solver [INFO] finished tweaking git repo https://github.com/superosku/block-game-solver [INFO] tweaked toml for git repo https://github.com/superosku/block-game-solver written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/superosku/block-game-solver already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b6cb6c33cc6753dcd01a6d8bae9b1a2ed3c78dde4d2a2c1cf0af610db5fd3b78 [INFO] running `Command { std: "docker" "start" "-a" "b6cb6c33cc6753dcd01a6d8bae9b1a2ed3c78dde4d2a2c1cf0af610db5fd3b78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b6cb6c33cc6753dcd01a6d8bae9b1a2ed3c78dde4d2a2c1cf0af610db5fd3b78", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6cb6c33cc6753dcd01a6d8bae9b1a2ed3c78dde4d2a2c1cf0af610db5fd3b78", kill_on_drop: false }` [INFO] [stdout] b6cb6c33cc6753dcd01a6d8bae9b1a2ed3c78dde4d2a2c1cf0af610db5fd3b78 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6e2017d1be62b85f7003d8f13c8af6697027d12012d01b57126a4881bae38f2a [INFO] running `Command { std: "docker" "start" "-a" "6e2017d1be62b85f7003d8f13c8af6697027d12012d01b57126a4881bae38f2a", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.16 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling puzzle-solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:337:5 [INFO] [stdout] | [INFO] [stdout] 324 | / loop { [INFO] [stdout] 325 | | let random_value = rng.gen_range(0..(pieces.len())); [INFO] [stdout] 326 | | let random_piece = &pieces[random_value]; [INFO] [stdout] 327 | | [INFO] [stdout] ... | [INFO] [stdout] 334 | | } [INFO] [stdout] 335 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 336 | [INFO] [stdout] 337 | piece_count [INFO] [stdout] | ^^^^^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:6:44 [INFO] [stdout] | [INFO] [stdout] 6 | let min_x: i32 = piece.iter().map(|(x, y)| *x).min().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:7:41 [INFO] [stdout] | [INFO] [stdout] 7 | let min_y: i32 = piece.iter().map(|(x, y)| *y).min().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:284:9 [INFO] [stdout] | [INFO] [stdout] 284 | for i in 0..3 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `piece_count` [INFO] [stdout] --> src/main.rs:320:13 [INFO] [stdout] | [INFO] [stdout] 320 | let mut piece_count = 0; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_piece_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `best_values` [INFO] [stdout] --> src/main.rs:328:13 [INFO] [stdout] | [INFO] [stdout] 328 | let best_values = (0, 0, 0); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_values` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/main.rs:242:17 [INFO] [stdout] | [INFO] [stdout] 242 | let mut sum = 0; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 44.21s [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:242:13 [INFO] [stdout] | [INFO] [stdout] 242 | let mut sum = 0; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:320:9 [INFO] [stdout] | [INFO] [stdout] 320 | let mut piece_count = 0; [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:321:9 [INFO] [stdout] | [INFO] [stdout] 321 | let mut board = Board::new(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `placement_out_of_bounds` [INFO] [stdout] --> src/main.rs:135:8 [INFO] [stdout] | [INFO] [stdout] 135 | fn placement_out_of_bounds(&self, piece: &Piece, x: i32, y: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `play_a_game_monte_carlo` [INFO] [stdout] --> src/main.rs:318:4 [INFO] [stdout] | [INFO] [stdout] 318 | fn play_a_game_monte_carlo() -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "6e2017d1be62b85f7003d8f13c8af6697027d12012d01b57126a4881bae38f2a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e2017d1be62b85f7003d8f13c8af6697027d12012d01b57126a4881bae38f2a", kill_on_drop: false }` [INFO] [stdout] 6e2017d1be62b85f7003d8f13c8af6697027d12012d01b57126a4881bae38f2a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dc8f6e04578f6173fecbcd2a51284cb48786dd0cb79a46285da5a9c7ef9484ac [INFO] running `Command { std: "docker" "start" "-a" "dc8f6e04578f6173fecbcd2a51284cb48786dd0cb79a46285da5a9c7ef9484ac", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling puzzle-solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:337:5 [INFO] [stdout] | [INFO] [stdout] 324 | / loop { [INFO] [stdout] 325 | | let random_value = rng.gen_range(0..(pieces.len())); [INFO] [stdout] 326 | | let random_piece = &pieces[random_value]; [INFO] [stdout] 327 | | [INFO] [stdout] ... | [INFO] [stdout] 334 | | } [INFO] [stdout] 335 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 336 | [INFO] [stdout] 337 | piece_count [INFO] [stdout] | ^^^^^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:6:44 [INFO] [stdout] | [INFO] [stdout] 6 | let min_x: i32 = piece.iter().map(|(x, y)| *x).min().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:7:41 [INFO] [stdout] | [INFO] [stdout] 7 | let min_y: i32 = piece.iter().map(|(x, y)| *y).min().unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/main.rs:284:9 [INFO] [stdout] | [INFO] [stdout] 284 | for i in 0..3 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `piece_count` [INFO] [stdout] --> src/main.rs:320:13 [INFO] [stdout] | [INFO] [stdout] 320 | let mut piece_count = 0; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_piece_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `best_values` [INFO] [stdout] --> src/main.rs:328:13 [INFO] [stdout] | [INFO] [stdout] 328 | let best_values = (0, 0, 0); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_values` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/main.rs:242:17 [INFO] [stdout] | [INFO] [stdout] 242 | let mut sum = 0; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:242:13 [INFO] [stdout] | [INFO] [stdout] 242 | let mut sum = 0; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:320:9 [INFO] [stdout] | [INFO] [stdout] 320 | let mut piece_count = 0; [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:321:9 [INFO] [stdout] | [INFO] [stdout] 321 | let mut board = Board::new(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `placement_out_of_bounds` [INFO] [stdout] --> src/main.rs:135:8 [INFO] [stdout] | [INFO] [stdout] 135 | fn placement_out_of_bounds(&self, piece: &Piece, x: i32, y: i32) -> bool { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `play_a_game_monte_carlo` [INFO] [stdout] --> src/main.rs:318:4 [INFO] [stdout] | [INFO] [stdout] 318 | fn play_a_game_monte_carlo() -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 12 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.61s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/puzzle_solver-8defcd62d0038a1c) [INFO] running `Command { std: "docker" "inspect" "dc8f6e04578f6173fecbcd2a51284cb48786dd0cb79a46285da5a9c7ef9484ac", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc8f6e04578f6173fecbcd2a51284cb48786dd0cb79a46285da5a9c7ef9484ac", kill_on_drop: false }` [INFO] [stdout] dc8f6e04578f6173fecbcd2a51284cb48786dd0cb79a46285da5a9c7ef9484ac [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+0d13f6afeba4935499abe0c9a07426c94492c94e" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 83f40b0b4c1db9972944038ff6ae554694f332826a293dc768782f9124d3f3fb [INFO] running `Command { std: "docker" "start" "-a" "83f40b0b4c1db9972944038ff6ae554694f332826a293dc768782f9124d3f3fb", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stdout] [INFO] [stderr] warning: unreachable expression [INFO] [stdout] running 0 tests [INFO] [stderr] --> src/main.rs:337:5 [INFO] [stdout] [INFO] [stderr] | [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] 324 | / loop { [INFO] [stdout] [INFO] [stderr] 325 | | let random_value = rng.gen_range(0..(pieces.len())); [INFO] [stderr] 326 | | let random_piece = &pieces[random_value]; [INFO] [stderr] 327 | | [INFO] [stderr] ... | [INFO] [stderr] 334 | | } [INFO] [stderr] 335 | | } [INFO] [stderr] | |_____- any code following this expression is unreachable [INFO] [stderr] 336 | [INFO] [stderr] 337 | piece_count [INFO] [stderr] | ^^^^^^^^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/main.rs:6:44 [INFO] [stderr] | [INFO] [stderr] 6 | let min_x: i32 = piece.iter().map(|(x, y)| *x).min().unwrap(); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:7:41 [INFO] [stderr] | [INFO] [stderr] 7 | let min_y: i32 = piece.iter().map(|(x, y)| *y).min().unwrap(); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `i` [INFO] [stderr] --> src/main.rs:284:9 [INFO] [stderr] | [INFO] [stderr] 284 | for i in 0..3 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `piece_count` [INFO] [stderr] --> src/main.rs:320:13 [INFO] [stderr] | [INFO] [stderr] 320 | let mut piece_count = 0; [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_piece_count` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `best_values` [INFO] [stderr] --> src/main.rs:328:13 [INFO] [stderr] | [INFO] [stderr] 328 | let best_values = (0, 0, 0); [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_values` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `sum` [INFO] [stderr] --> src/main.rs:242:17 [INFO] [stderr] | [INFO] [stderr] 242 | let mut sum = 0; [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:242:13 [INFO] [stderr] | [INFO] [stderr] 242 | let mut sum = 0; [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/main.rs:320:9 [INFO] [stderr] | [INFO] [stderr] 320 | let mut piece_count = 0; [INFO] [stderr] | ----^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:321:9 [INFO] [stderr] | [INFO] [stderr] 321 | let mut board = Board::new(); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `placement_out_of_bounds` [INFO] [stderr] --> src/main.rs:135:8 [INFO] [stderr] | [INFO] [stderr] 135 | fn placement_out_of_bounds(&self, piece: &Piece, x: i32, y: i32) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `play_a_game_monte_carlo` [INFO] [stderr] --> src/main.rs:318:4 [INFO] [stderr] | [INFO] [stderr] 318 | fn play_a_game_monte_carlo() -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `puzzle-solver` (bin "puzzle-solver" test) generated 12 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 52.23s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/puzzle_solver-8defcd62d0038a1c) [INFO] running `Command { std: "docker" "inspect" "83f40b0b4c1db9972944038ff6ae554694f332826a293dc768782f9124d3f3fb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "83f40b0b4c1db9972944038ff6ae554694f332826a293dc768782f9124d3f3fb", kill_on_drop: false }` [INFO] [stdout] 83f40b0b4c1db9972944038ff6ae554694f332826a293dc768782f9124d3f3fb