[INFO] fetching crate game_chess_core 0.0.2...
[INFO] linting game_chess_core-0.0.2 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate game_chess_core 0.0.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate game_chess_core 0.0.2
[INFO] finished tweaking crates.io crate game_chess_core 0.0.2
[INFO] tweaked toml for crates.io crate game_chess_core 0.0.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate game_chess_core 0.0.2 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 42 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mucow v0.1.0
[INFO] [stderr]   Downloaded pleco v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9c945f8edb761d105ac95db636101b86e1ce6a9415d5d31b9c9bd970edd0a15
[INFO] running `Command { std: "docker" "start" "-a" "e9c945f8edb761d105ac95db636101b86e1ce6a9415d5d31b9c9bd970edd0a15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9c945f8edb761d105ac95db636101b86e1ce6a9415d5d31b9c9bd970edd0a15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9c945f8edb761d105ac95db636101b86e1ce6a9415d5d31b9c9bd970edd0a15", kill_on_drop: false }`
[INFO] [stdout] e9c945f8edb761d105ac95db636101b86e1ce6a9415d5d31b9c9bd970edd0a15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 881a1f09a7dd031bf10a42a648cbf8723a4944b77c43c541960a8f9da1da1b6f
[INFO] running `Command { std: "docker" "start" "-a" "881a1f09a7dd031bf10a42a648cbf8723a4944b77c43c541960a8f9da1da1b6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking mucow v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking pleco v0.5.0
[INFO] [stderr]     Checking game_chess_core v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `default` can be confused for the standard trait method `std::default::Default::default`
[INFO] [stdout]   --> src/lib.rs:66:3
[INFO] [stdout]    |
[INFO] [stdout] 66 | /   pub fn default() -> Self
[INFO] [stdout] 67 | |   {
[INFO] [stdout] 68 | |     Self
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |   }
[INFO] [stdout]    | |___^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider implementing the trait `std::default::Default` or choosing a less ambiguous method name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout]    = note: `#[warn(clippy::should_implement_trait)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/lib.rs:92:46
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let result = pleco_board.apply_uci_move( &uci_move );
[INFO] [stdout]    |                                              ^^^^^^^^^ help: change this to: `uci_move`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `default` can be confused for the standard trait method `std::default::Default::default`
[INFO] [stdout]    --> src/lib.rs:233:3
[INFO] [stdout]     |
[INFO] [stdout] 233 | /   pub fn default() -> Self
[INFO] [stdout] 234 | |   {
[INFO] [stdout] 235 | |     Self
[INFO] [stdout] ...   |
[INFO] [stdout] 240 | |   }
[INFO] [stdout]     | |___^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider implementing the trait `std::default::Default` or choosing a less ambiguous method name
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lib.rs:251:19
[INFO] [stdout]     |
[INFO] [stdout] 251 |     let success = !new_board.is_none();
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^ help: try: `new_board.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lib.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 |     return GameStatus::Continuing;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 291 -     return GameStatus::Continuing;
[INFO] [stdout] 291 +     GameStatus::Continuing
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `Option::map`
[INFO] [stdout]    --> src/lib.rs:300:5
[INFO] [stdout]     |
[INFO] [stdout] 300 | /     match self.history.last()
[INFO] [stdout] 301 | |     {
[INFO] [stdout] 302 | |       Some( h ) => Some( h.uci_move.clone() ),
[INFO] [stdout] 303 | |       _ => None
[INFO] [stdout] 304 | |     }
[INFO] [stdout]     | |_____^ help: try: `self.history.last().map(|h| h.uci_move.clone())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_map
[INFO] [stdout]     = note: `#[warn(clippy::manual_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `default` can be confused for the standard trait method `std::default::Default::default`
[INFO] [stdout]   --> src/lib.rs:66:3
[INFO] [stdout]    |
[INFO] [stdout] 66 | /   pub fn default() -> Self
[INFO] [stdout] 67 | |   {
[INFO] [stdout] 68 | |     Self
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |   }
[INFO] [stdout]    | |___^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider implementing the trait `std::default::Default` or choosing a less ambiguous method name
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout]    = note: `#[warn(clippy::should_implement_trait)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/lib.rs:92:46
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let result = pleco_board.apply_uci_move( &uci_move );
[INFO] [stdout]    |                                              ^^^^^^^^^ help: change this to: `uci_move`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `default` can be confused for the standard trait method `std::default::Default::default`
[INFO] [stdout]    --> src/lib.rs:233:3
[INFO] [stdout]     |
[INFO] [stdout] 233 | /   pub fn default() -> Self
[INFO] [stdout] 234 | |   {
[INFO] [stdout] 235 | |     Self
[INFO] [stdout] ...   |
[INFO] [stdout] 240 | |   }
[INFO] [stdout]     | |___^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider implementing the trait `std::default::Default` or choosing a less ambiguous method name
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/lib.rs:251:19
[INFO] [stdout]     |
[INFO] [stdout] 251 |     let success = !new_board.is_none();
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^ help: try: `new_board.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/lib.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 |     return GameStatus::Continuing;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 291 -     return GameStatus::Continuing;
[INFO] [stdout] 291 +     GameStatus::Continuing
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `Option::map`
[INFO] [stdout]    --> src/lib.rs:300:5
[INFO] [stdout]     |
[INFO] [stdout] 300 | /     match self.history.last()
[INFO] [stdout] 301 | |     {
[INFO] [stdout] 302 | |       Some( h ) => Some( h.uci_move.clone() ),
[INFO] [stdout] 303 | |       _ => None
[INFO] [stdout] 304 | |     }
[INFO] [stdout]     | |_____^ help: try: `self.history.last().map(|h| h.uci_move.clone())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_map
[INFO] [stdout]     = note: `#[warn(clippy::manual_map)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.69s
[INFO] running `Command { std: "docker" "inspect" "881a1f09a7dd031bf10a42a648cbf8723a4944b77c43c541960a8f9da1da1b6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "881a1f09a7dd031bf10a42a648cbf8723a4944b77c43c541960a8f9da1da1b6f", kill_on_drop: false }`
[INFO] [stdout] 881a1f09a7dd031bf10a42a648cbf8723a4944b77c43c541960a8f9da1da1b6f