[INFO] cloning repository https://github.com/michaeleliot/RustChess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michaeleliot/RustChess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaeleliot%2FRustChess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaeleliot%2FRustChess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c69893819dcca1e2c2c7b382187dbac54726bb16
[INFO] linting michaeleliot/RustChess against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaeleliot%2FRustChess" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/michaeleliot/RustChess
[INFO] finished tweaking git repo https://github.com/michaeleliot/RustChess
[INFO] tweaked toml for git repo https://github.com/michaeleliot/RustChess written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/michaeleliot/RustChess 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] crate git repo https://github.com/michaeleliot/RustChess already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2070233c3289b875387591eea6c1576e0a4bb809a65f3ee38c308c2c7d6f7f5b
[INFO] running `Command { std: "docker" "start" "-a" "2070233c3289b875387591eea6c1576e0a4bb809a65f3ee38c308c2c7d6f7f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2070233c3289b875387591eea6c1576e0a4bb809a65f3ee38c308c2c7d6f7f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2070233c3289b875387591eea6c1576e0a4bb809a65f3ee38c308c2c7d6f7f5b", kill_on_drop: false }`
[INFO] [stdout] 2070233c3289b875387591eea6c1576e0a4bb809a65f3ee38c308c2c7d6f7f5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 26dbb03c42933f08adb0203ec2cb20d6e7067575fac8d459142bc4d50cc909d2
[INFO] running `Command { std: "docker" "start" "-a" "26dbb03c42933f08adb0203ec2cb20d6e7067575fac8d459142bc4d50cc909d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of `print!` in `Display` impl
[INFO] [stdout]   --> src/board.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         print!("{}", space_string);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `write!(_f, ..)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_in_format_impl
[INFO] [stdout]    = note: `#[warn(clippy::print_in_format_impl)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `println!` in `Display` impl
[INFO] [stdout]   --> src/board.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |           println!(""); 
[INFO] [stdout]    |           ^^^^^^^^^^^^ help: replace with: `writeln!(_f, ..)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_in_format_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/board.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |           println!(""); 
[INFO] [stdout]    |           ^^^^^^^^^--^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/board.rs:27:29
[INFO] [stdout]    |
[INFO] [stdout] 27 |           let mut divider = format!("|");
[INFO] [stdout]    |                             ^^^^^^^^^^^^ help: consider using `.to_string()`: `"|".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]    = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `print!` in `Display` impl
[INFO] [stdout]   --> src/board.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |           print!("{}", divider);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^ help: replace with: `write!(_f, ..)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_in_format_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/board.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     return Ok(self.check_game_over());
[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] 56 -     return Ok(self.check_game_over());
[INFO] [stdout] 56 +     Ok(self.check_game_over())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/board.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 |       return space_indexes[random_space_index]
[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] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 63 -       return space_indexes[random_space_index]
[INFO] [stdout] 63 +       space_indexes[random_space_index]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/board.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 |     if potential_space_indexes.len() == 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `potential_space_indexes.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `optional_winning_player` after checking its variant with `is_some`
[INFO] [stdout]    --> src/board.rs:128:43
[INFO] [stdout]     |
[INFO] [stdout] 126 |     if optional_winning_player.is_some() {
[INFO] [stdout]     |     ------------------------------------ help: try: `if let Some(<item>) = optional_winning_player`
[INFO] [stdout] 127 |       println!();
[INFO] [stdout] 128 |       println!("Game Over, Winner Is {}", optional_winning_player.unwrap());
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/board.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 |     return optional_winning_player;
[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] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 130 -     return optional_winning_player;
[INFO] [stdout] 130 +     optional_winning_player
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:101:56
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let optional_winner_first_col = check_three_in_row([self.spaces[0], self.spaces[3], self.spaces[6]].try_into().unwrap());
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:102:57
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let optional_winner_second_col = check_three_in_row([self.spaces[1], self.spaces[4], self.spaces[7]].try_into().unwrap());
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:103:56
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let optional_winner_third_col = check_three_in_row([self.spaces[2], self.spaces[5], self.spaces[8]].try_into().unwrap());
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:105:65
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let optional_winner_left_to_right_diag = check_three_in_row([self.spaces[0], self.spaces[4], self.spaces[8]].try_into().unwrap());
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:106:65
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let optional_winner_right_to_left_diag = check_three_in_row([self.spaces[2], self.spaces[4], self.spaces[6]].try_into().unwrap());
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/board.rs:122:21
[INFO] [stdout]     |
[INFO] [stdout] 122 |       .filter(|&&x| !x.is_none())
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: try: `x.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/main.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 |       return Some(result)
[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] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 55 -       return Some(result)
[INFO] [stdout] 55 +       Some(result)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:59:7
[INFO] [stdout]    |
[INFO] [stdout] 59 |       return None
[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] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 -       return None
[INFO] [stdout] 59 +       None
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `print!` in `Display` impl
[INFO] [stdout]   --> src/board.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         print!("{}", space_string);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `write!(_f, ..)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_in_format_impl
[INFO] [stdout]    = note: `#[warn(clippy::print_in_format_impl)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `println!` in `Display` impl
[INFO] [stdout]   --> src/board.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |           println!(""); 
[INFO] [stdout]    |           ^^^^^^^^^^^^ help: replace with: `writeln!(_f, ..)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_in_format_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/board.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |           println!(""); 
[INFO] [stdout]    |           ^^^^^^^^^--^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/board.rs:27:29
[INFO] [stdout]    |
[INFO] [stdout] 27 |           let mut divider = format!("|");
[INFO] [stdout]    |                             ^^^^^^^^^^^^ help: consider using `.to_string()`: `"|".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]    = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `print!` in `Display` impl
[INFO] [stdout]   --> src/board.rs:31:11
[INFO] [stdout]    |
[INFO] [stdout] 31 |           print!("{}", divider);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^ help: replace with: `write!(_f, ..)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_in_format_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/board.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     return Ok(self.check_game_over());
[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] 56 -     return Ok(self.check_game_over());
[INFO] [stdout] 56 +     Ok(self.check_game_over())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/board.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 |       return space_indexes[random_space_index]
[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] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 63 -       return space_indexes[random_space_index]
[INFO] [stdout] 63 +       space_indexes[random_space_index]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/board.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 |     if potential_space_indexes.len() == 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `potential_space_indexes.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `optional_winning_player` after checking its variant with `is_some`
[INFO] [stdout]    --> src/board.rs:128:43
[INFO] [stdout]     |
[INFO] [stdout] 126 |     if optional_winning_player.is_some() {
[INFO] [stdout]     |     ------------------------------------ help: try: `if let Some(<item>) = optional_winning_player`
[INFO] [stdout] 127 |       println!();
[INFO] [stdout] 128 |       println!("Game Over, Winner Is {}", optional_winning_player.unwrap());
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/board.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 |     return optional_winning_player;
[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] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 130 -     return optional_winning_player;
[INFO] [stdout] 130 +     optional_winning_player
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:101:56
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let optional_winner_first_col = check_three_in_row([self.spaces[0], self.spaces[3], self.spaces[6]].try_into().unwrap());
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:102:57
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let optional_winner_second_col = check_three_in_row([self.spaces[1], self.spaces[4], self.spaces[7]].try_into().unwrap());
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:103:56
[INFO] [stdout]     |
[INFO] [stdout] 103 |     let optional_winner_third_col = check_three_in_row([self.spaces[2], self.spaces[5], self.spaces[8]].try_into().unwrap());
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:105:65
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let optional_winner_left_to_right_diag = check_three_in_row([self.spaces[0], self.spaces[4], self.spaces[8]].try_into().unwrap());
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `[board_space::BoardSpaceState; 3]`
[INFO] [stdout]    --> src/board.rs:106:65
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let optional_winner_right_to_left_diag = check_three_in_row([self.spaces[2], self.spaces[4], self.spaces[6]].try_into().unwrap());
[INFO] [stdout]     |                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing `.try_into()`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/board.rs:122:21
[INFO] [stdout]     |
[INFO] [stdout] 122 |       .filter(|&&x| !x.is_none())
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: try: `x.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/main.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 |       return Some(result)
[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] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 55 -       return Some(result)
[INFO] [stdout] 55 +       Some(result)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:59:7
[INFO] [stdout]    |
[INFO] [stdout] 59 |       return None
[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] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 59 -       return None
[INFO] [stdout] 59 +       None
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `Command { std: "docker" "inspect" "26dbb03c42933f08adb0203ec2cb20d6e7067575fac8d459142bc4d50cc909d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26dbb03c42933f08adb0203ec2cb20d6e7067575fac8d459142bc4d50cc909d2", kill_on_drop: false }`
[INFO] [stdout] 26dbb03c42933f08adb0203ec2cb20d6e7067575fac8d459142bc4d50cc909d2