[INFO] cloning repository https://github.com/craigfay/chess-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/craigfay/chess-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcraigfay%2Fchess-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcraigfay%2Fchess-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf8ff59865be685d7099a83e795110d1de1d1e23
[INFO] checking craigfay/chess-engine against try#8ac0915e346f9a2e49ca3951b642c55bd7d1eaab for pr-158447
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcraigfay%2Fchess-engine" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/craigfay/chess-engine
[INFO] finished tweaking git repo https://github.com/craigfay/chess-engine
[INFO] tweaked toml for git repo https://github.com/craigfay/chess-engine written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/craigfay/chess-engine on toolchain 8ac0915e346f9a2e49ca3951b642c55bd7d1eaab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8ac0915e346f9a2e49ca3951b642c55bd7d1eaab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/craigfay/chess-engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8ac0915e346f9a2e49ca3951b642c55bd7d1eaab" "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-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560
[INFO] running `Command { std: "docker" "start" "4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560" "/opt/rustwide/cargo-home/bin/cargo" "+8ac0915e346f9a2e49ca3951b642c55bd7d1eaab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560" "/opt/rustwide/cargo-home/bin/cargo" "+8ac0915e346f9a2e49ca3951b642c55bd7d1eaab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking chess-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Color`
[INFO] [stdout]   --> src/actions.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Color,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `legal_actions` and `legal_next_states`
[INFO] [stdout]   --> src/actions.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     legal_actions,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 25 |     legal_next_states,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gamestate::GameState`
[INFO] [stdout]  --> src/pieces.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::gamestate::GameState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Piece`
[INFO] [stdout]   --> src/utilities.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Piece,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `color_is_checked`, `color_threatens_square`, `diagonal_path_is_obstructed`, `is_checkmate`, `is_stalemate`, `legal_actions`, and `position_delta`
[INFO] [stdout]  --> src/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     color_threatens_square,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     color_is_checked,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     position_delta,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     legal_actions,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 7 |     is_checkmate,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 8 |     is_stalemate,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 9 |     diagonal_path_is_obstructed,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | mod tests;
[INFO] [stdout]   | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Action`, `Capture`, `Castle`, `EnPassant`, `Kingside`, `Move`, `Promotion`, and `Queenside`
[INFO] [stdout]   --> src/tests.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Action,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 14 |     Move,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 15 |     Capture,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 16 |     Promotion,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 17 |     Castle,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 18 |     CastleDirection::{Kingside, Queenside},
[INFO] [stdout]    |                       ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 19 |     EnPassant,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `GameState` and `Placement`
[INFO] [stdout]   --> src/tests.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     GameState,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 24 |     Placement,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Bishop`, `Black`, `King`, `Knight`, `Pawn`, `Piece`, `Queen`, `Rook`, and `White`
[INFO] [stdout]   --> src/tests.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Piece,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 29 |     PieceName::{
[INFO] [stdout] 30 |         Pawn,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 31 |         Rook,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 32 |         Bishop,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 33 |         Knight,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 34 |         Queen,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 35 |         King,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 36 |     },
[INFO] [stdout] 37 |     Color::{White, Black},
[INFO] [stdout]    |             ^^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fen_notation`, `square_algebraic_to_index`, and `square_index_to_algebraic`
[INFO] [stdout]   --> src/tests.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     square_index_to_algebraic,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 42 |     square_algebraic_to_index,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 43 |     fen_notation,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color`
[INFO] [stdout]   --> src/actions.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Color,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `legal_actions` and `legal_next_states`
[INFO] [stdout]   --> src/actions.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     legal_actions,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 25 |     legal_next_states,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gamestate::GameState`
[INFO] [stdout]  --> src/pieces.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::gamestate::GameState;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Piece`
[INFO] [stdout]   --> src/utilities.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Piece,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Piece`
[INFO] [stdout]   --> src/tests.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Piece,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `square_index_to_algebraic`
[INFO] [stdout]   --> src/tests.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     square_index_to_algebraic,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/actions.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let mut origin_rank = &mut String::with_capacity(1);
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/actions.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut origin_file = &mut String::with_capacity(1);
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_x`
[INFO] [stdout]    --> src/actions.rs:149:14
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let (delta_x, delta_y) = position_delta(self.from, self.to);
[INFO] [stdout]     |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/actions.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut origin_rank = &mut String::with_capacity(1);
[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/actions.rs:198:13
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let mut origin_file = &mut String::with_capacity(1);
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_x`
[INFO] [stdout]    --> src/actions.rs:271:14
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let (delta_x, delta_y) = position_delta(self.with, self.on);
[INFO] [stdout]     |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_y`
[INFO] [stdout]    --> src/actions.rs:271:23
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let (delta_x, delta_y) = position_delta(self.with, self.on);
[INFO] [stdout]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/actions.rs:297:13
[INFO] [stdout]     |
[INFO] [stdout] 297 |         let mut origin_file = &mut String::with_capacity(1);
[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/actions.rs:524:13
[INFO] [stdout]     |
[INFO] [stdout] 524 |         let mut origin_file = &mut String::with_capacity(1);
[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/actions.rs:525:13
[INFO] [stdout]     |
[INFO] [stdout] 525 |         let mut capture_indicator = &mut String::with_capacity(1);
[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/actions.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let mut origin_rank = &mut String::with_capacity(1);
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/actions.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut origin_file = &mut String::with_capacity(1);
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_x`
[INFO] [stdout]    --> src/actions.rs:149:14
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let (delta_x, delta_y) = position_delta(self.from, self.to);
[INFO] [stdout]     |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/actions.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         let mut origin_rank = &mut String::with_capacity(1);
[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/actions.rs:198:13
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let mut origin_file = &mut String::with_capacity(1);
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_x`
[INFO] [stdout]    --> src/actions.rs:271:14
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let (delta_x, delta_y) = position_delta(self.with, self.on);
[INFO] [stdout]     |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta_y`
[INFO] [stdout]    --> src/actions.rs:271:23
[INFO] [stdout]     |
[INFO] [stdout] 271 |         let (delta_x, delta_y) = position_delta(self.with, self.on);
[INFO] [stdout]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_delta_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/actions.rs:297:13
[INFO] [stdout]     |
[INFO] [stdout] 297 |         let mut origin_file = &mut String::with_capacity(1);
[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/actions.rs:524:13
[INFO] [stdout]     |
[INFO] [stdout] 524 |         let mut origin_file = &mut String::with_capacity(1);
[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/actions.rs:525:13
[INFO] [stdout]     |
[INFO] [stdout] 525 |         let mut capture_indicator = &mut String::with_capacity(1);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `action`
[INFO] [stdout]    --> src/tests.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let action = Move { from: 61, to: 54 };
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tests.rs:527:9
[INFO] [stdout]     |
[INFO] [stdout] 527 |     let mut state = GameState::with_placements(vec![
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `action`
[INFO] [stdout]     --> src/tests.rs:1135:9
[INFO] [stdout]      |
[INFO] [stdout] 1135 |     let action = Move { from: 29, to: 20 };
[INFO] [stdout]      |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_action`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/tests.rs:1378:9
[INFO] [stdout]      |
[INFO] [stdout] 1378 |     let mut state = GameState::with_placements(vec![
[INFO] [stdout]      |         ----^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560", kill_on_drop: false }`
[INFO] [stdout] 4d6daa38ba968377f0917d67b8bf5c4773aefc3e24f029100a1c63d0e647f560
