[INFO] cloning repository https://github.com/LeonardMH/chess-engine-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LeonardMH/chess-engine-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeonardMH%2Fchess-engine-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeonardMH%2Fchess-engine-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 247cd983a0d41b848e473a34507ddf2638cc8e9e
[INFO] checking LeonardMH/chess-engine-rs against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLeonardMH%2Fchess-engine-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LeonardMH/chess-engine-rs on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LeonardMH/chess-engine-rs
[INFO] finished tweaking git repo https://github.com/LeonardMH/chess-engine-rs
[INFO] tweaked toml for git repo https://github.com/LeonardMH/chess-engine-rs written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/LeonardMH/chess-engine-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93a79fda3f7557eca91c76e18dceee7cc91d279568623c1d1284ede0d6d2b37a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "93a79fda3f7557eca91c76e18dceee7cc91d279568623c1d1284ede0d6d2b37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93a79fda3f7557eca91c76e18dceee7cc91d279568623c1d1284ede0d6d2b37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93a79fda3f7557eca91c76e18dceee7cc91d279568623c1d1284ede0d6d2b37a", kill_on_drop: false }`
[INFO] [stdout] 93a79fda3f7557eca91c76e18dceee7cc91d279568623c1d1284ede0d6d2b37a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3df8f77d2e6304f55f90b190b1c513cd70f95235ff4869cf7847c4914203ba21
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3df8f77d2e6304f55f90b190b1c513cd70f95235ff4869cf7847c4914203ba21", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking chess-toolkit-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> src/piece/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]  --> src/piece/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dark`
[INFO] [stdout]   --> src/board/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Dark,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Light`
[INFO] [stdout]   --> src/board/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Light,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `color_for_coordinate`
[INFO] [stdout]   --> src/board/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn color_for_coordinate(coordinate: Coordinate) -> SquareColor {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `piece`
[INFO] [stdout]   --> src/board/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     piece: Option<Piece>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `color`
[INFO] [stdout]   --> src/board/mod.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     color: SquareColor,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `coordinate`
[INFO] [stdout]   --> src/board/mod.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     coordinate: Coordinate,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/board/mod.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn new(coordinate: Coordinate, piece: Option<Piece>) -> Square {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `squares`
[INFO] [stdout]   --> src/board/mod.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     squares: [Square; (BOARD_HEIGHT * BOARD_WIDTH) as usize],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PlayerIndex`
[INFO] [stdout]  --> src/timer.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | type PlayerIndex = usize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ChessTimer`
[INFO] [stdout]   --> src/timer.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct ChessTimer<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Result`
[INFO] [stdout]   --> src/timer.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | type Result<T> = std::result::Result<T, TimerError>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/timer.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn new(direction: TimerDirection,
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_callback`
[INFO] [stdout]   --> src/timer.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn set_callback(&mut self, c: impl FnMut(PlayerIndex) + 'a) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `trigger_callback`
[INFO] [stdout]   --> src/timer.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn trigger_callback(&mut self, player: PlayerIndex) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start`
[INFO] [stdout]   --> src/timer.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn start(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stop`
[INFO] [stdout]   --> src/timer.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn stop(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `player_index_supported`
[INFO] [stdout]    --> src/timer.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn player_index_supported(player: PlayerIndex) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elapsed_to_remaining`
[INFO] [stdout]    --> src/timer.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn elapsed_to_remaining(elapsed: i64, last_remaining: u32) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_elapsed_time_for_player`
[INFO] [stdout]    --> src/timer.rs:154:12
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub fn check_elapsed_time_for_player(&self, player: PlayerIndex) -> Option<i64> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_remaining_time_for_player`
[INFO] [stdout]    --> src/timer.rs:162:12
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn check_remaining_time_for_player(&self, player: PlayerIndex) -> Option<u32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `adjust_elapsed_time_for_player`
[INFO] [stdout]    --> src/timer.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn adjust_elapsed_time_for_player(&mut self, player: PlayerIndex, adjustment_ms: i64) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_player`
[INFO] [stdout]    --> src/timer.rs:198:12
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn current_player(&self) -> Option<PlayerIndex> { self.curr_player_index }
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `switch_to_player`
[INFO] [stdout]    --> src/timer.rs:200:12
[INFO] [stdout]     |
[INFO] [stdout] 200 |     pub fn switch_to_player(&mut self, player: PlayerIndex) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `switch_to_next_player`
[INFO] [stdout]    --> src/timer.rs:226:12
[INFO] [stdout]     |
[INFO] [stdout] 226 |     pub fn switch_to_next_player(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `piece`
[INFO] [stdout]   --> src/board/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     piece: Option<Piece>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `color`
[INFO] [stdout]   --> src/board/mod.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     color: SquareColor,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `coordinate`
[INFO] [stdout]   --> src/board/mod.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     coordinate: Coordinate,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/board/mod.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn new(coordinate: Coordinate, piece: Option<Piece>) -> Square {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `squares`
[INFO] [stdout]   --> src/board/mod.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     squares: [Square; (BOARD_HEIGHT * BOARD_WIDTH) as usize],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_callback`
[INFO] [stdout]   --> src/timer.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn set_callback(&mut self, c: impl FnMut(PlayerIndex) + 'a) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.88s
[INFO] running `Command { std: "docker" "inspect" "3df8f77d2e6304f55f90b190b1c513cd70f95235ff4869cf7847c4914203ba21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3df8f77d2e6304f55f90b190b1c513cd70f95235ff4869cf7847c4914203ba21", kill_on_drop: false }`
[INFO] [stdout] 3df8f77d2e6304f55f90b190b1c513cd70f95235ff4869cf7847c4914203ba21