[INFO] updating cached repository h3nnn4n/smart-panda
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/h3nnn4n/smart-panda
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/h3nnn4n/smart-panda" "work/ex/clippy-test-run/sources/stable/gh/h3nnn4n/smart-panda"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/h3nnn4n/smart-panda'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/h3nnn4n/smart-panda" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/h3nnn4n/smart-panda"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/h3nnn4n/smart-panda'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3dee3aa06dc3f1f79ac7cdbc6ccacd4e0dc92bd7
[INFO] sha for GitHub repo h3nnn4n/smart-panda: 3dee3aa06dc3f1f79ac7cdbc6ccacd4e0dc92bd7
[INFO] validating manifest of h3nnn4n/smart-panda on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of h3nnn4n/smart-panda on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing h3nnn4n/smart-panda
[INFO] finished frobbing h3nnn4n/smart-panda
[INFO] frobbed toml for h3nnn4n/smart-panda written to work/ex/clippy-test-run/sources/stable/gh/h3nnn4n/smart-panda/Cargo.toml
[INFO] started frobbing h3nnn4n/smart-panda
[INFO] finished frobbing h3nnn4n/smart-panda
[INFO] frobbed toml for h3nnn4n/smart-panda written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/h3nnn4n/smart-panda/Cargo.toml
[INFO] crate h3nnn4n/smart-panda has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting h3nnn4n/smart-panda against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/h3nnn4n/smart-panda:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c941e092913ba1ccd70c509bdea6576f27d52477b26cb87fffceb1720c4b7af5
[INFO] running `"docker" "start" "-a" "c941e092913ba1ccd70c509bdea6576f27d52477b26cb87fffceb1720c4b7af5"`
[INFO] [stderr]     Checking c_vec v1.3.1
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]     Checking smart-panda v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/piece.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         ()
[INFO] [stderr]    |         ^^ help: remove the final `()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/piece.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         ()
[INFO] [stderr]    |         ^^ help: remove the final `()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:118:16
[INFO] [stderr]     |
[INFO] [stderr] 118 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 119 | |             return false;
[INFO] [stderr] 120 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:126:16
[INFO] [stderr]     |
[INFO] [stderr] 126 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 127 | |             return false;
[INFO] [stderr] 128 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `self.height`
[INFO] [stderr]    --> src/board.rs:241:21
[INFO] [stderr]     |
[INFO] [stderr] 241 |         for i in 0..self.height - 0 {
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:272:16
[INFO] [stderr]     |
[INFO] [stderr] 272 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 273 | |             return false;
[INFO] [stderr] 274 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:296:16
[INFO] [stderr]     |
[INFO] [stderr] 296 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 297 | |             return false;
[INFO] [stderr] 298 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:329:16
[INFO] [stderr]     |
[INFO] [stderr] 329 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 330 | |             return false;
[INFO] [stderr] 331 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:362:16
[INFO] [stderr]     |
[INFO] [stderr] 362 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 363 | |             return false;
[INFO] [stderr] 364 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:416:16
[INFO] [stderr]     |
[INFO] [stderr] 416 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 417 | |             return false;
[INFO] [stderr] 418 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `moves`
[INFO] [stderr]    --> src/board.rs:426:22
[INFO] [stderr]     |
[INFO] [stderr] 426 |             for j in 0..4 {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 426 |             for (j, <item>) in moves.iter_mut().enumerate() {
[INFO] [stderr]     |                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `moves`.
[INFO] [stderr]    --> src/board.rs:437:18
[INFO] [stderr]     |
[INFO] [stderr] 437 |         for i in 0..4 {
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 437 |         for <item> in &moves {
[INFO] [stderr]     |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:446:16
[INFO] [stderr]     |
[INFO] [stderr] 446 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 447 | |             return false;
[INFO] [stderr] 448 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `moves`
[INFO] [stderr]    --> src/board.rs:456:22
[INFO] [stderr]     |
[INFO] [stderr] 456 |             for j in 0..4 {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 456 |             for (j, <item>) in moves.iter_mut().enumerate() {
[INFO] [stderr]     |                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `moves`.
[INFO] [stderr]    --> src/board.rs:467:18
[INFO] [stderr]     |
[INFO] [stderr] 467 |         for i in 0..4 {
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 467 |         for <item> in &moves {
[INFO] [stderr]     |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:118:16
[INFO] [stderr]     |
[INFO] [stderr] 118 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 119 | |             return false;
[INFO] [stderr] 120 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:126:16
[INFO] [stderr]     |
[INFO] [stderr] 126 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 127 | |             return false;
[INFO] [stderr] 128 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: the operation is ineffective. Consider reducing it to `self.height`
[INFO] [stderr]    --> src/board.rs:241:21
[INFO] [stderr]     |
[INFO] [stderr] 241 |         for i in 0..self.height - 0 {
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::identity_op)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:272:16
[INFO] [stderr]     |
[INFO] [stderr] 272 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 273 | |             return false;
[INFO] [stderr] 274 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:296:16
[INFO] [stderr]     |
[INFO] [stderr] 296 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 297 | |             return false;
[INFO] [stderr] 298 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:329:16
[INFO] [stderr]     |
[INFO] [stderr] 329 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 330 | |             return false;
[INFO] [stderr] 331 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:362:16
[INFO] [stderr]     |
[INFO] [stderr] 362 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 363 | |             return false;
[INFO] [stderr] 364 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:416:16
[INFO] [stderr]     |
[INFO] [stderr] 416 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 417 | |             return false;
[INFO] [stderr] 418 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `moves`
[INFO] [stderr]    --> src/board.rs:426:22
[INFO] [stderr]     |
[INFO] [stderr] 426 |             for j in 0..4 {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 426 |             for (j, <item>) in moves.iter_mut().enumerate() {
[INFO] [stderr]     |                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `moves`.
[INFO] [stderr]    --> src/board.rs:437:18
[INFO] [stderr]     |
[INFO] [stderr] 437 |         for i in 0..4 {
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 437 |         for <item> in &moves {
[INFO] [stderr]     |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_none()`
[INFO] [stderr]    --> src/board.rs:446:16
[INFO] [stderr]     |
[INFO] [stderr] 446 |           if let None = self.active_piece {
[INFO] [stderr]     |  _________-      ^^^^
[INFO] [stderr] 447 | |             return false;
[INFO] [stderr] 448 | |         }
[INFO] [stderr]     | |_________- help: try this: `if self.active_piece.is_none()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `j` is used to index `moves`
[INFO] [stderr]    --> src/board.rs:456:22
[INFO] [stderr]     |
[INFO] [stderr] 456 |             for j in 0..4 {
[INFO] [stderr]     |                      ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 456 |             for (j, <item>) in moves.iter_mut().enumerate() {
[INFO] [stderr]     |                 ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `moves`.
[INFO] [stderr]    --> src/board.rs:467:18
[INFO] [stderr]     |
[INFO] [stderr] 467 |         for i in 0..4 {
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 467 |         for <item> in &moves {
[INFO] [stderr]     |             ^^^^^^    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/board.rs:669:17
[INFO] [stderr]     |
[INFO] [stderr] 669 |         assert!(board.has_active_piece() == false);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!board.has_active_piece()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/board.rs:676:17
[INFO] [stderr]     |
[INFO] [stderr] 676 |         assert!(board.has_active_piece() == false);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!board.has_active_piece()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.39s
[INFO] running `"docker" "inspect" "c941e092913ba1ccd70c509bdea6576f27d52477b26cb87fffceb1720c4b7af5"`
[INFO] running `"docker" "rm" "-f" "c941e092913ba1ccd70c509bdea6576f27d52477b26cb87fffceb1720c4b7af5"`
[INFO] [stdout] c941e092913ba1ccd70c509bdea6576f27d52477b26cb87fffceb1720c4b7af5