[INFO] cloning repository https://github.com/REEEhor/game_of_life
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/REEEhor/game_of_life" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FREEEhor%2Fgame_of_life", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FREEEhor%2Fgame_of_life'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cdb227998d4f7934b652d127c53a94b2c23f56a
[INFO] linting REEEhor/game_of_life against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FREEEhor%2Fgame_of_life" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/REEEhor/game_of_life
[INFO] finished tweaking git repo https://github.com/REEEhor/game_of_life
[INFO] tweaked toml for git repo https://github.com/REEEhor/game_of_life written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/REEEhor/game_of_life 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/REEEhor/game_of_life 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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3796f09dffb8858103d343472dad44928e4385d4162a80a07d79bae623765d1c
[INFO] running `Command { std: "docker" "start" "-a" "3796f09dffb8858103d343472dad44928e4385d4162a80a07d79bae623765d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3796f09dffb8858103d343472dad44928e4385d4162a80a07d79bae623765d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3796f09dffb8858103d343472dad44928e4385d4162a80a07d79bae623765d1c", kill_on_drop: false }`
[INFO] [stdout] 3796f09dffb8858103d343472dad44928e4385d4162a80a07d79bae623765d1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] eef9e9ae780e4e1b907a9b5e1531284bf4478c4066f65f9f583fcd32a4b4ba2d
[INFO] running `Command { std: "docker" "start" "-a" "eef9e9ae780e4e1b907a9b5e1531284bf4478c4066f65f9f583fcd32a4b4ba2d", kill_on_drop: false }`
[INFO] [stderr]     Checking game_of_life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         return self.width;
[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] 21 -         return self.width;
[INFO] [stdout] 21 +         self.width
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         return self.height;
[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] 25 -         return self.height;
[INFO] [stdout] 25 +         self.height
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 | /         return Ok(Screen {
[INFO] [stdout] 74 | |             width,
[INFO] [stdout] 75 | |             height,
[INFO] [stdout] 76 | |             data,
[INFO] [stdout] 77 | |         });
[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] 73 ~         Ok(Screen {
[INFO] [stdout] 74 +             width,
[INFO] [stdout] 75 +             height,
[INFO] [stdout] 76 +             data,
[INFO] [stdout] 77 ~         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]   --> src/simulation/screen.rs:67:30
[INFO] [stdout]    |
[INFO] [stdout] 67 |             data_line.extend(repeat(false).take(to_add_count));
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n(false, to_add_count)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout]    = note: `#[warn(clippy::manual_repeat_n)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]   --> src/simulation/screen.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |         data.extend(repeat(vec![false; width]).take(to_add_count));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n(vec![false; width], to_add_count)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |         return &mut self.data[y][x];
[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] 81 -         return &mut self.data[y][x];
[INFO] [stdout] 81 +         &mut self.data[y][x]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         return self.data[y][x];
[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] 85 -         return self.data[y][x];
[INFO] [stdout] 85 +         self.data[y][x]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/simulation/screen.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |         return 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] 114 -         return result;
[INFO] [stdout] 114 +         result
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/simulation/mod.rs:55:44
[INFO] [stdout]    |
[INFO] [stdout] 55 |                   *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout]    |  ____________________________________________^
[INFO] [stdout] 56 | |                     || (!is_alive && neighbours == 3);
[INFO] [stdout]    | |_____________________________________________________^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 55 -                 *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout] 56 -                     || (!is_alive && neighbours == 3);
[INFO] [stdout] 55 +                 *new_buffer.at_mut(x, y) = !(!is_alive && neighbours != 3 || neighbours != 2 && neighbours != 3);
[INFO] [stdout]    |
[INFO] [stdout] 55 -                 *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout] 56 -                     || (!is_alive && neighbours == 3);
[INFO] [stdout] 55 +                 *new_buffer.at_mut(x, y) = (neighbours == 3 || neighbours == 2) && (neighbours == 3 || is_alive);
[INFO] [stdout]    |
[INFO] [stdout] 55 -                 *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout] 56 -                     || (!is_alive && neighbours == 3);
[INFO] [stdout] 55 +                 *new_buffer.at_mut(x, y) = neighbours == 3 || is_alive && neighbours == 2;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant name ends with the enum's name
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     InvalidAction,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stdout]   = note: `#[warn(clippy::enum_variant_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `Option::map`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     if let Some(first_word) = words.next() {
[INFO] [stdout] 18 | |         Some(match first_word.to_ascii_lowercase().as_str() {
[INFO] [stdout] 19 | |             "n" | "next" => Action::Next,
[INFO] [stdout] 20 | |             "p" | "prev" | "previous" => Action::Previous,
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         None
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 17 ~     words.next().map(|first_word| match first_word.to_ascii_lowercase().as_str() {
[INFO] [stdout] 18 +             "n" | "next" => Action::Next,
[INFO] [stdout] 19 +             "p" | "prev" | "previous" => Action::Previous,
[INFO] [stdout] 20 +             "e" | "exp" | "expand" => get_number_of_steps_to_precompute(&mut words),
[INFO] [stdout] 21 +             "q" | "quit" => Action::Quit,
[INFO] [stdout] 22 +             "h" | "help" => Action::Help,
[INFO] [stdout] 23 +             _ => Action::InvalidAction,
[INFO] [stdout] 24 +         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: matching on `Some` with `ok()` is redundant
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         if let Some(how_many) = next_word.parse::<usize>().ok() {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_result_ok
[INFO] [stdout]    = note: `#[warn(clippy::match_result_ok)]` on by default
[INFO] [stdout] help: consider matching on `Ok(how_many)` and removing the call to `ok` instead
[INFO] [stdout]    |
[INFO] [stdout] 33 -         if let Some(how_many) = next_word.parse::<usize>().ok() {
[INFO] [stdout] 33 +         if let Ok(how_many) = next_word.parse::<usize>() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         return self.width;
[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] 21 -         return self.width;
[INFO] [stdout] 21 +         self.width
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         return self.height;
[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] 25 -         return self.height;
[INFO] [stdout] 25 +         self.height
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 | /         return Ok(Screen {
[INFO] [stdout] 74 | |             width,
[INFO] [stdout] 75 | |             height,
[INFO] [stdout] 76 | |             data,
[INFO] [stdout] 77 | |         });
[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] 73 ~         Ok(Screen {
[INFO] [stdout] 74 +             width,
[INFO] [stdout] 75 +             height,
[INFO] [stdout] 76 +             data,
[INFO] [stdout] 77 ~         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]   --> src/simulation/screen.rs:67:30
[INFO] [stdout]    |
[INFO] [stdout] 67 |             data_line.extend(repeat(false).take(to_add_count));
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n(false, to_add_count)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout]    = note: `#[warn(clippy::manual_repeat_n)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]   --> src/simulation/screen.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |         data.extend(repeat(vec![false; width]).take(to_add_count));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n(vec![false; width], to_add_count)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |         return &mut self.data[y][x];
[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] 81 -         return &mut self.data[y][x];
[INFO] [stdout] 81 +         &mut self.data[y][x]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/simulation/screen.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         return self.data[y][x];
[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] 85 -         return self.data[y][x];
[INFO] [stdout] 85 +         self.data[y][x]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/simulation/screen.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |         return 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] 114 -         return result;
[INFO] [stdout] 114 +         result
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/simulation/mod.rs:55:44
[INFO] [stdout]    |
[INFO] [stdout] 55 |                   *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout]    |  ____________________________________________^
[INFO] [stdout] 56 | |                     || (!is_alive && neighbours == 3);
[INFO] [stdout]    | |_____________________________________________________^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 55 -                 *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout] 56 -                     || (!is_alive && neighbours == 3);
[INFO] [stdout] 55 +                 *new_buffer.at_mut(x, y) = !(!is_alive && neighbours != 3 || neighbours != 2 && neighbours != 3);
[INFO] [stdout]    |
[INFO] [stdout] 55 -                 *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout] 56 -                     || (!is_alive && neighbours == 3);
[INFO] [stdout] 55 +                 *new_buffer.at_mut(x, y) = (neighbours == 3 || neighbours == 2) && (neighbours == 3 || is_alive);
[INFO] [stdout]    |
[INFO] [stdout] 55 -                 *new_buffer.at_mut(x, y) = (is_alive && (neighbours == 2 || neighbours == 3))
[INFO] [stdout] 56 -                     || (!is_alive && neighbours == 3);
[INFO] [stdout] 55 +                 *new_buffer.at_mut(x, y) = neighbours == 3 || is_alive && neighbours == 2;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant name ends with the enum's name
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     InvalidAction,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stdout]   = note: `#[warn(clippy::enum_variant_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `Option::map`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     if let Some(first_word) = words.next() {
[INFO] [stdout] 18 | |         Some(match first_word.to_ascii_lowercase().as_str() {
[INFO] [stdout] 19 | |             "n" | "next" => Action::Next,
[INFO] [stdout] 20 | |             "p" | "prev" | "previous" => Action::Previous,
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |         None
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 17 ~     words.next().map(|first_word| match first_word.to_ascii_lowercase().as_str() {
[INFO] [stdout] 18 +             "n" | "next" => Action::Next,
[INFO] [stdout] 19 +             "p" | "prev" | "previous" => Action::Previous,
[INFO] [stdout] 20 +             "e" | "exp" | "expand" => get_number_of_steps_to_precompute(&mut words),
[INFO] [stdout] 21 +             "q" | "quit" => Action::Quit,
[INFO] [stdout] 22 +             "h" | "help" => Action::Help,
[INFO] [stdout] 23 +             _ => Action::InvalidAction,
[INFO] [stdout] 24 +         })
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: matching on `Some` with `ok()` is redundant
[INFO] [stdout]   --> src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         if let Some(how_many) = next_word.parse::<usize>().ok() {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_result_ok
[INFO] [stdout]    = note: `#[warn(clippy::match_result_ok)]` on by default
[INFO] [stdout] help: consider matching on `Ok(how_many)` and removing the call to `ok` instead
[INFO] [stdout]    |
[INFO] [stdout] 33 -         if let Some(how_many) = next_word.parse::<usize>().ok() {
[INFO] [stdout] 33 +         if let Ok(how_many) = next_word.parse::<usize>() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "eef9e9ae780e4e1b907a9b5e1531284bf4478c4066f65f9f583fcd32a4b4ba2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef9e9ae780e4e1b907a9b5e1531284bf4478c4066f65f9f583fcd32a4b4ba2d", kill_on_drop: false }`
[INFO] [stdout] eef9e9ae780e4e1b907a9b5e1531284bf4478c4066f65f9f583fcd32a4b4ba2d