[INFO] updating cached repository MoritzKn/tic-tac-toe
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MoritzKn/tic-tac-toe
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MoritzKn/tic-tac-toe" "work/ex/clippy-test-run/sources/stable/gh/MoritzKn/tic-tac-toe"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/MoritzKn/tic-tac-toe'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MoritzKn/tic-tac-toe" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MoritzKn/tic-tac-toe"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MoritzKn/tic-tac-toe'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f17c8b0bff7812ba4e21fef042c3c976c8cb3f15
[INFO] sha for GitHub repo MoritzKn/tic-tac-toe: f17c8b0bff7812ba4e21fef042c3c976c8cb3f15
[INFO] validating manifest of MoritzKn/tic-tac-toe 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 MoritzKn/tic-tac-toe 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 MoritzKn/tic-tac-toe
[INFO] finished frobbing MoritzKn/tic-tac-toe
[INFO] frobbed toml for MoritzKn/tic-tac-toe written to work/ex/clippy-test-run/sources/stable/gh/MoritzKn/tic-tac-toe/Cargo.toml
[INFO] started frobbing MoritzKn/tic-tac-toe
[INFO] finished frobbing MoritzKn/tic-tac-toe
[INFO] frobbed toml for MoritzKn/tic-tac-toe written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MoritzKn/tic-tac-toe/Cargo.toml
[INFO] crate MoritzKn/tic-tac-toe 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 MoritzKn/tic-tac-toe against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MoritzKn/tic-tac-toe:/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 -Dclippy::into_iter_on_array" "-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] 37bfe10090a4e5d5c66cd5579b681ad806a8c1b8fcb257a338fb739225ff82be
[INFO] running `"docker" "start" "-a" "37bfe10090a4e5d5c66cd5579b681ad806a8c1b8fcb257a338fb739225ff82be"`
[INFO] [stderr]     Checking tic-tac-toe v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:261:16
[INFO] [stderr]     |
[INFO] [stderr] 261 |         Move { x: x, y: y }
[INFO] [stderr]     |                ^^^^ help: replace it with: `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:261:22
[INFO] [stderr]     |
[INFO] [stderr] 261 |         Move { x: x, y: y }
[INFO] [stderr]     |                      ^^^^ help: replace it with: `y`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]    --> src/main.rs:381:17
[INFO] [stderr]     |
[INFO] [stderr] 381 |                 print!("  ---+---+---\n");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::print_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:398:13
[INFO] [stderr]     |
[INFO] [stderr] 398 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]    --> src/main.rs:457:5
[INFO] [stderr]     |
[INFO] [stderr] 457 |     print!("\n");
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:470:9
[INFO] [stderr]     |
[INFO] [stderr] 470 |         println!("");
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]    --> src/main.rs:496:9
[INFO] [stderr]     |
[INFO] [stderr] 496 |         print!("\n");
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:261:16
[INFO] [stderr]     |
[INFO] [stderr] 261 |         Move { x: x, y: y }
[INFO] [stderr]     |                ^^^^ help: replace it with: `x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:261:22
[INFO] [stderr]     |
[INFO] [stderr] 261 |         Move { x: x, y: y }
[INFO] [stderr]     |                      ^^^^ help: replace it with: `y`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]    --> src/main.rs:381:17
[INFO] [stderr]     |
[INFO] [stderr] 381 |                 print!("  ---+---+---\n");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::print_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:398:13
[INFO] [stderr]     |
[INFO] [stderr] 398 |             println!("");
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]    --> src/main.rs:457:5
[INFO] [stderr]     |
[INFO] [stderr] 457 |     print!("\n");
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:470:9
[INFO] [stderr]     |
[INFO] [stderr] 470 |         println!("");
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]    --> src/main.rs:496:9
[INFO] [stderr]     |
[INFO] [stderr] 496 |         print!("\n");
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:163:9
[INFO] [stderr]     |
[INFO] [stderr] 163 |         return best_move;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `best_move`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 |             return best_score;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `best_score`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |             return score;
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: remove `return` as shown: `score`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:327:9
[INFO] [stderr]     |
[INFO] [stderr] 327 |         return Player::Empty;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Player::Empty`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:302:13
[INFO] [stderr]     |
[INFO] [stderr] 302 |             return None;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:371:9
[INFO] [stderr]     |
[INFO] [stderr] 371 |         return true;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:345:13
[INFO] [stderr]     |
[INFO] [stderr] 345 |             return true;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:163:9
[INFO] [stderr]     |
[INFO] [stderr] 163 |         return best_move;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `best_move`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 |             return best_score;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `best_score`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |             return score;
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: remove `return` as shown: `score`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:327:9
[INFO] [stderr]     |
[INFO] [stderr] 327 |         return Player::Empty;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Player::Empty`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:302:13
[INFO] [stderr]     |
[INFO] [stderr] 302 |             return None;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:371:9
[INFO] [stderr]     |
[INFO] [stderr] 371 |         return true;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:345:13
[INFO] [stderr]     |
[INFO] [stderr] 345 |             return true;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:19:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn get_opponent(&self) -> Player {
[INFO] [stderr]    |                     ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:47:22
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn current_is_ai(&self) -> bool {
[INFO] [stderr]    |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:68:20
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn get_ai_move(&self, board: &Board) -> Move {
[INFO] [stderr]    |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:144:29
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let mut tmp_board = board.clone();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^ help: try dereferencing it: `*board`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/main.rs:167:22
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn get_user_move(&self, board: &Board) -> Move {
[INFO] [stderr]     |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
[INFO] [stderr]    --> src/main.rs:180:13
[INFO] [stderr]     |
[INFO] [stderr] 180 | /             io::stdout()
[INFO] [stderr] 181 | |                 .flush()
[INFO] [stderr] 182 | |                 .ok()
[INFO] [stderr] 183 | |                 .expect("flush() fail");
[INFO] [stderr]     | |_______________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ok_expect)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ok_expect
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:19:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn get_opponent(&self) -> Player {
[INFO] [stderr]    |                     ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:47:22
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn current_is_ai(&self) -> bool {
[INFO] [stderr]    |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:68:20
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn get_ai_move(&self, board: &Board) -> Move {
[INFO] [stderr]    |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]    --> src/main.rs:336:31
[INFO] [stderr]     |
[INFO] [stderr] 336 |             for field in line.into_iter() {
[INFO] [stderr]     |                               ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: requested on the command line with `-D clippy::into-iter-on-array`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_array
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:144:29
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let mut tmp_board = board.clone();
[INFO] [stderr]     |                             ^^^^^^^^^^^^^ help: try dereferencing it: `*board`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/main.rs:167:22
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn get_user_move(&self, board: &Board) -> Move {
[INFO] [stderr]     |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
[INFO] [stderr]    --> src/main.rs:180:13
[INFO] [stderr]     |
[INFO] [stderr] 180 | /             io::stdout()
[INFO] [stderr] 181 | |                 .flush()
[INFO] [stderr] 182 | |                 .ok()
[INFO] [stderr] 183 | |                 .expect("flush() fail");
[INFO] [stderr]     | |_______________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ok_expect)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ok_expect
[INFO] [stderr] 
[INFO] [stderr] warning: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
[INFO] [stderr]    --> src/main.rs:413:9
[INFO] [stderr]     |
[INFO] [stderr] 413 | /         io::stdout()
[INFO] [stderr] 414 | |             .flush()
[INFO] [stderr] 415 | |             .ok()
[INFO] [stderr] 416 | |             .expect("flush() fail");
[INFO] [stderr]     | |___________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ok_expect
[INFO] [stderr] 
[INFO] [stderr] error: this .into_iter() call is equivalent to .iter() and will not move the array
[INFO] [stderr]    --> src/main.rs:336:31
[INFO] [stderr]     |
[INFO] [stderr] 336 |             for field in line.into_iter() {
[INFO] [stderr]     |                               ^^^^^^^^^ help: call directly: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: requested on the command line with `-D clippy::into-iter-on-array`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_array
[INFO] [stderr] 
[INFO] [stderr] warning: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
[INFO] [stderr]    --> src/main.rs:413:9
[INFO] [stderr]     |
[INFO] [stderr] 413 | /         io::stdout()
[INFO] [stderr] 414 | |             .flush()
[INFO] [stderr] 415 | |             .ok()
[INFO] [stderr] 416 | |             .expect("flush() fail");
[INFO] [stderr]     | |___________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ok_expect
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `tic-tac-toe`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `tic-tac-toe`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "37bfe10090a4e5d5c66cd5579b681ad806a8c1b8fcb257a338fb739225ff82be"`
[INFO] running `"docker" "rm" "-f" "37bfe10090a4e5d5c66cd5579b681ad806a8c1b8fcb257a338fb739225ff82be"`
[INFO] [stdout] 37bfe10090a4e5d5c66cd5579b681ad806a8c1b8fcb257a338fb739225ff82be