[INFO] cloning repository https://github.com/rivaxel/My-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/rivaxel/My-Chess-Engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frivaxel%2FMy-Chess-Engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frivaxel%2FMy-Chess-Engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52b9d7e6d4c5519bc5a8d3152f2dc3cb1932554f
[INFO] checking rivaxel/My-Chess-Engine against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frivaxel%2FMy-Chess-Engine" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rivaxel/My-Chess-Engine on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rivaxel/My-Chess-Engine
[INFO] finished tweaking git repo https://github.com/rivaxel/My-Chess-Engine
[INFO] tweaked toml for git repo https://github.com/rivaxel/My-Chess-Engine written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rivaxel/My-Chess-Engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24b06fa74a8a639b58b1670dea76fc31f9983d55ef607211dc9e41ec2feb89a9
[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" "24b06fa74a8a639b58b1670dea76fc31f9983d55ef607211dc9e41ec2feb89a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24b06fa74a8a639b58b1670dea76fc31f9983d55ef607211dc9e41ec2feb89a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24b06fa74a8a639b58b1670dea76fc31f9983d55ef607211dc9e41ec2feb89a9", kill_on_drop: false }`
[INFO] [stdout] 24b06fa74a8a639b58b1670dea76fc31f9983d55ef607211dc9e41ec2feb89a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e60f649196d945df99fc2517293db02d46b1104ad622c59808f225afc84dae44
[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" "e60f649196d945df99fc2517293db02d46b1104ad622c59808f225afc84dae44", kill_on_drop: false }`
[INFO] [stderr]     Checking arsenic_chess_engine v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/chess_board/evaluation.rs:126:94
[INFO] [stdout]     |
[INFO] [stdout] 126 |         self.score += promotion_bonus + self.match_square_to_score(location, promoted_piece);;
[INFO] [stdout]     |                                                                                              ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/chess_board/evaluation.rs:126:94
[INFO] [stdout]     |
[INFO] [stdout] 126 |         self.score += promotion_bonus + self.match_square_to_score(location, promoted_piece);;
[INFO] [stdout]     |                                                                                              ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]   --> src/uci_interface.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn reset_game(game: &Game) {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> src/move_generator.rs:193:54
[INFO] [stdout]     |
[INFO] [stdout] 193 |         for &piece in ['P', 'N', 'B', 'R', 'Q', 'K'].into_iter() {
[INFO] [stdout]     |                                                      ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game`
[INFO] [stdout]   --> src/uci_interface.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn reset_game(game: &Game) {
[INFO] [stdout]    |               ^^^^ help: if this is intentional, prefix it with an underscore: `_game`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> src/move_generator.rs:193:54
[INFO] [stdout]     |
[INFO] [stdout] 193 |         for &piece in ['P', 'N', 'B', 'R', 'Q', 'K'].into_iter() {
[INFO] [stdout]     |                                                      ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "e60f649196d945df99fc2517293db02d46b1104ad622c59808f225afc84dae44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e60f649196d945df99fc2517293db02d46b1104ad622c59808f225afc84dae44", kill_on_drop: false }`
[INFO] [stdout] e60f649196d945df99fc2517293db02d46b1104ad622c59808f225afc84dae44