[INFO] updating cached repository floschnell/ascii-platformer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/floschnell/ascii-platformer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/floschnell/ascii-platformer" "work/ex/clippy-test-run/sources/stable/gh/floschnell/ascii-platformer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/floschnell/ascii-platformer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/floschnell/ascii-platformer" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/floschnell/ascii-platformer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/floschnell/ascii-platformer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1abd783ef013b2c374e3ba5d1e85ca43a048febd
[INFO] sha for GitHub repo floschnell/ascii-platformer: 1abd783ef013b2c374e3ba5d1e85ca43a048febd
[INFO] validating manifest of floschnell/ascii-platformer 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 floschnell/ascii-platformer 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 floschnell/ascii-platformer
[INFO] finished frobbing floschnell/ascii-platformer
[INFO] frobbed toml for floschnell/ascii-platformer written to work/ex/clippy-test-run/sources/stable/gh/floschnell/ascii-platformer/Cargo.toml
[INFO] started frobbing floschnell/ascii-platformer
[INFO] finished frobbing floschnell/ascii-platformer
[INFO] frobbed toml for floschnell/ascii-platformer written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/floschnell/ascii-platformer/Cargo.toml
[INFO] crate floschnell/ascii-platformer 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 floschnell/ascii-platformer 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-5/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/floschnell/ascii-platformer:/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] 2b716bfdaa91d91d0b30b79d9fb2ec01aab558e25144461cdd37592723e465ee
[INFO] running `"docker" "start" "-a" "2b716bfdaa91d91d0b30b79d9fb2ec01aab558e25144461cdd37592723e465ee"`
[INFO] [stderr]     Checking platformer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rgb`
[INFO] [stderr]  --> src/main.rs:5:30
[INFO] [stderr]   |
[INFO] [stderr] 5 | use termion::color::{Bg, Fg, Rgb};
[INFO] [stderr]   |                              ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/main.rs:97:11
[INFO] [stderr]    |
[INFO] [stderr] 97 |           ()
[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: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 | /     if player.speed_y < 0.0 && check_y >= 1.0 {
[INFO] [stderr] 154 | |       if world.mat[(check_y - 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 155 | |         player.speed_y = 0.0;
[INFO] [stderr] 156 | |         new_y = check_y;
[INFO] [stderr] 157 | |         collision = true;
[INFO] [stderr] 158 | |       }
[INFO] [stderr] 159 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 153 |     if player.speed_y < 0.0 && check_y >= 1.0 && world.mat[(check_y - 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 154 |   player.speed_y = 0.0;
[INFO] [stderr] 155 |   new_y = check_y;
[INFO] [stderr] 156 |   collision = true;
[INFO] [stderr] 157 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 | /     if player.speed_y > 0.0 {
[INFO] [stderr] 162 | |       if world.mat[(check_y + 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 163 | |         player.speed_y = 0.0;
[INFO] [stderr] 164 | |         new_y = check_y;
[INFO] [stderr] ...   |
[INFO] [stderr] 167 | |       }
[INFO] [stderr] 168 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if player.speed_y > 0.0 && world.mat[(check_y + 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 162 |   player.speed_y = 0.0;
[INFO] [stderr] 163 |   new_y = check_y;
[INFO] [stderr] 164 |   player.on_ground = true;
[INFO] [stderr] 165 |   collision = true;
[INFO] [stderr] 166 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 | /     if player.speed_x < 0.0 && check_x >= 1.0 {
[INFO] [stderr] 171 | |       if world.mat[check_y as usize][(check_x - 1.0) as usize] == '#' {
[INFO] [stderr] 172 | |         player.speed_x = 0.0;
[INFO] [stderr] 173 | |         new_x = player.x;
[INFO] [stderr] 174 | |         collision = true;
[INFO] [stderr] 175 | |       }
[INFO] [stderr] 176 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 170 |     if player.speed_x < 0.0 && check_x >= 1.0 && world.mat[check_y as usize][(check_x - 1.0) as usize] == '#' {
[INFO] [stderr] 171 |   player.speed_x = 0.0;
[INFO] [stderr] 172 |   new_x = player.x;
[INFO] [stderr] 173 |   collision = true;
[INFO] [stderr] 174 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:178:5
[INFO] [stderr]     |
[INFO] [stderr] 178 | /     if player.speed_x > 0.0 {
[INFO] [stderr] 179 | |       if world.mat[check_y as usize][(check_x + 1.0) as usize] == '#' {
[INFO] [stderr] 180 | |         player.speed_x = 0.0;
[INFO] [stderr] 181 | |         new_x = player.x;
[INFO] [stderr] 182 | |         collision = true;
[INFO] [stderr] 183 | |       }
[INFO] [stderr] 184 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 178 |     if player.speed_x > 0.0 && world.mat[check_y as usize][(check_x + 1.0) as usize] == '#' {
[INFO] [stderr] 179 |   player.speed_x = 0.0;
[INFO] [stderr] 180 |   new_x = player.x;
[INFO] [stderr] 181 |   collision = true;
[INFO] [stderr] 182 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:208:10
[INFO] [stderr]     |
[INFO] [stderr] 208 |     } else {
[INFO] [stderr]     |  __________^
[INFO] [stderr] 209 | |     if player.walking {
[INFO] [stderr] 210 | |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr] 211 | |     } else {
[INFO] [stderr] 212 | |       player.speed_x = player.speed_x * 0.95;
[INFO] [stderr] 213 | |     }
[INFO] [stderr] 214 | |   }
[INFO] [stderr]     | |___^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 208 |   } else if player.walking {
[INFO] [stderr] 209 |   player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr] 210 | } else {
[INFO] [stderr] 211 |   player.speed_x = player.speed_x * 0.95;
[INFO] [stderr] 212 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:235:10
[INFO] [stderr]     |
[INFO] [stderr] 235 |     } else if player.x < display.left as f32 + (display.width as f32 * 0.33) {
[INFO] [stderr]     |  __________^
[INFO] [stderr] 236 | |     if display.left > 0 {
[INFO] [stderr] 237 | |       display.left = (player.x - display.width as f32 * 0.33) as usize;
[INFO] [stderr] 238 | |     }
[INFO] [stderr] 239 | |   }
[INFO] [stderr]     | |___^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 235 |   } else if player.x < display.left as f32 + (display.width as f32 * 0.33) && display.left > 0 {
[INFO] [stderr] 236 |   display.left = (player.x - display.width as f32 * 0.33) as usize;
[INFO] [stderr] 237 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/main.rs:290:55
[INFO] [stderr]     |
[INFO] [stderr] 290 | fn load_level(world: &mut World, player: &mut Player) -> () {
[INFO] [stderr]     |                                                       ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rgb`
[INFO] [stderr]  --> src/main.rs:5:30
[INFO] [stderr]   |
[INFO] [stderr] 5 | use termion::color::{Bg, Fg, Rgb};
[INFO] [stderr]   |                              ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]   --> src/main.rs:97:11
[INFO] [stderr]    |
[INFO] [stderr] 97 |           ()
[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: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 | /     if player.speed_y < 0.0 && check_y >= 1.0 {
[INFO] [stderr] 154 | |       if world.mat[(check_y - 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 155 | |         player.speed_y = 0.0;
[INFO] [stderr] 156 | |         new_y = check_y;
[INFO] [stderr] 157 | |         collision = true;
[INFO] [stderr] 158 | |       }
[INFO] [stderr] 159 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 153 |     if player.speed_y < 0.0 && check_y >= 1.0 && world.mat[(check_y - 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 154 |   player.speed_y = 0.0;
[INFO] [stderr] 155 |   new_y = check_y;
[INFO] [stderr] 156 |   collision = true;
[INFO] [stderr] 157 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 | /     if player.speed_y > 0.0 {
[INFO] [stderr] 162 | |       if world.mat[(check_y + 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 163 | |         player.speed_y = 0.0;
[INFO] [stderr] 164 | |         new_y = check_y;
[INFO] [stderr] ...   |
[INFO] [stderr] 167 | |       }
[INFO] [stderr] 168 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if player.speed_y > 0.0 && world.mat[(check_y + 1.0) as usize][check_x as usize] == '#' {
[INFO] [stderr] 162 |   player.speed_y = 0.0;
[INFO] [stderr] 163 |   new_y = check_y;
[INFO] [stderr] 164 |   player.on_ground = true;
[INFO] [stderr] 165 |   collision = true;
[INFO] [stderr] 166 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 | /     if player.speed_x < 0.0 && check_x >= 1.0 {
[INFO] [stderr] 171 | |       if world.mat[check_y as usize][(check_x - 1.0) as usize] == '#' {
[INFO] [stderr] 172 | |         player.speed_x = 0.0;
[INFO] [stderr] 173 | |         new_x = player.x;
[INFO] [stderr] 174 | |         collision = true;
[INFO] [stderr] 175 | |       }
[INFO] [stderr] 176 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 170 |     if player.speed_x < 0.0 && check_x >= 1.0 && world.mat[check_y as usize][(check_x - 1.0) as usize] == '#' {
[INFO] [stderr] 171 |   player.speed_x = 0.0;
[INFO] [stderr] 172 |   new_x = player.x;
[INFO] [stderr] 173 |   collision = true;
[INFO] [stderr] 174 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:178:5
[INFO] [stderr]     |
[INFO] [stderr] 178 | /     if player.speed_x > 0.0 {
[INFO] [stderr] 179 | |       if world.mat[check_y as usize][(check_x + 1.0) as usize] == '#' {
[INFO] [stderr] 180 | |         player.speed_x = 0.0;
[INFO] [stderr] 181 | |         new_x = player.x;
[INFO] [stderr] 182 | |         collision = true;
[INFO] [stderr] 183 | |       }
[INFO] [stderr] 184 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 178 |     if player.speed_x > 0.0 && world.mat[check_y as usize][(check_x + 1.0) as usize] == '#' {
[INFO] [stderr] 179 |   player.speed_x = 0.0;
[INFO] [stderr] 180 |   new_x = player.x;
[INFO] [stderr] 181 |   collision = true;
[INFO] [stderr] 182 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/main.rs:208:10
[INFO] [stderr]     |
[INFO] [stderr] 208 |     } else {
[INFO] [stderr]     |  __________^
[INFO] [stderr] 209 | |     if player.walking {
[INFO] [stderr] 210 | |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr] 211 | |     } else {
[INFO] [stderr] 212 | |       player.speed_x = player.speed_x * 0.95;
[INFO] [stderr] 213 | |     }
[INFO] [stderr] 214 | |   }
[INFO] [stderr]     | |___^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 208 |   } else if player.walking {
[INFO] [stderr] 209 |   player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr] 210 | } else {
[INFO] [stderr] 211 |   player.speed_x = player.speed_x * 0.95;
[INFO] [stderr] 212 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/main.rs:235:10
[INFO] [stderr]     |
[INFO] [stderr] 235 |     } else if player.x < display.left as f32 + (display.width as f32 * 0.33) {
[INFO] [stderr]     |  __________^
[INFO] [stderr] 236 | |     if display.left > 0 {
[INFO] [stderr] 237 | |       display.left = (player.x - display.width as f32 * 0.33) as usize;
[INFO] [stderr] 238 | |     }
[INFO] [stderr] 239 | |   }
[INFO] [stderr]     | |___^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 235 |   } else if player.x < display.left as f32 + (display.width as f32 * 0.33) && display.left > 0 {
[INFO] [stderr] 236 |   display.left = (player.x - display.width as f32 * 0.33) as usize;
[INFO] [stderr] 237 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/main.rs:290:55
[INFO] [stderr]     |
[INFO] [stderr] 290 | fn load_level(world: &mut World, player: &mut Player) -> () {
[INFO] [stderr]     |                                                       ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/main.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     Err(_) => panic!("Could not get terminal size!"),
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   write!(stdout, "{}", termion::cursor::Hide);
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:78:5
[INFO] [stderr]     |
[INFO] [stderr] 78  | /     match stdin.next() {
[INFO] [stderr] 79  | |       Some(Ok(b)) => {
[INFO] [stderr] 80  | |         if b == b'q' {
[INFO] [stderr] 81  | |           panic!("Quit");
[INFO] [stderr] ...   |
[INFO] [stderr] 100 | |       _ => (),
[INFO] [stderr] 101 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 78  |     if let Some(Ok(b)) = stdin.next() {
[INFO] [stderr] 79  |   if b == b'q' {
[INFO] [stderr] 80  |     panic!("Quit");
[INFO] [stderr] 81  |   } else if b == b'w' {
[INFO] [stderr] 82  |     jump(&mut player)
[INFO] [stderr] 83  |   } else if b == b'a' {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/main.rs:148:15
[INFO] [stderr]     |
[INFO] [stderr] 148 |   for step in 0..(steps.abs() as usize + 1) {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `0..=steps.abs() as usize`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:197:24
[INFO] [stderr]     |
[INFO] [stderr] 197 |   } else if player.x > world.width as f32 - 1.0 {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^ help: try: `f32::from(world.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:198:16
[INFO] [stderr]     |
[INFO] [stderr] 198 |     player.x = world.width as f32 - 1.0;
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^ help: try: `f32::from(world.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:204:7
[INFO] [stderr]     |
[INFO] [stderr] 204 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.25;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x += player.walking_dir as f32 * 0.25`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:204:41
[INFO] [stderr]     |
[INFO] [stderr] 204 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.25;
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(player.walking_dir)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:206:7
[INFO] [stderr]     |
[INFO] [stderr] 206 |       player.speed_x = player.speed_x * 0.75;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x *= 0.75`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:210:7
[INFO] [stderr]     |
[INFO] [stderr] 210 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x += player.walking_dir as f32 * 0.1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:210:41
[INFO] [stderr]     |
[INFO] [stderr] 210 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(player.walking_dir)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:212:7
[INFO] [stderr]     |
[INFO] [stderr] 212 |       player.speed_x = player.speed_x * 0.95;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x *= 0.95`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:217:22
[INFO] [stderr]     |
[INFO] [stderr] 217 |     player.speed_x = player.walking_dir as f32 * SPEED_X_MAX;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(player.walking_dir)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:40
[INFO] [stderr]     |
[INFO] [stderr] 231 |   if player.x > display.left as f32 + (display.width as f32 * 0.66) {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:233:34
[INFO] [stderr]     |
[INFO] [stderr] 233 |       display.left = (player.x - display.width as f32 * 0.66) as usize;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:235:47
[INFO] [stderr]     |
[INFO] [stderr] 235 |   } else if player.x < display.left as f32 + (display.width as f32 * 0.33) {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:237:34
[INFO] [stderr]     |
[INFO] [stderr] 237 |       display.left = (player.x - display.width as f32 * 0.33) as usize;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/main.rs:295:5
[INFO] [stderr]     |
[INFO] [stderr] 295 |     Err(_) => panic!("Could not load level!"),
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:297:30
[INFO] [stderr]     |
[INFO] [stderr] 297 |   let lines = contents.split("\n");
[INFO] [stderr]     |                              ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `y` is used as a loop counter. Consider using `for (y, item) in lines.enumerate()` or similar iterators
[INFO] [stderr]    --> src/main.rs:300:15
[INFO] [stderr]     |
[INFO] [stderr] 300 |   for line in lines {
[INFO] [stderr]     |               ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/main.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     Err(_) => panic!("Could not get terminal size!"),
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   write!(stdout, "{}", termion::cursor::Hide);
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:78:5
[INFO] [stderr]     |
[INFO] [stderr] 78  | /     match stdin.next() {
[INFO] [stderr] 79  | |       Some(Ok(b)) => {
[INFO] [stderr] 80  | |         if b == b'q' {
[INFO] [stderr] 81  | |           panic!("Quit");
[INFO] [stderr] ...   |
[INFO] [stderr] 100 | |       _ => (),
[INFO] [stderr] 101 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 78  |     if let Some(Ok(b)) = stdin.next() {
[INFO] [stderr] 79  |   if b == b'q' {
[INFO] [stderr] 80  |     panic!("Quit");
[INFO] [stderr] 81  |   } else if b == b'w' {
[INFO] [stderr] 82  |     jump(&mut player)
[INFO] [stderr] 83  |   } else if b == b'a' {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/main.rs:148:15
[INFO] [stderr]     |
[INFO] [stderr] 148 |   for step in 0..(steps.abs() as usize + 1) {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `0..=steps.abs() as usize`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:197:24
[INFO] [stderr]     |
[INFO] [stderr] 197 |   } else if player.x > world.width as f32 - 1.0 {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^ help: try: `f32::from(world.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:198:16
[INFO] [stderr]     |
[INFO] [stderr] 198 |     player.x = world.width as f32 - 1.0;
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^ help: try: `f32::from(world.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:204:7
[INFO] [stderr]     |
[INFO] [stderr] 204 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.25;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x += player.walking_dir as f32 * 0.25`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:204:41
[INFO] [stderr]     |
[INFO] [stderr] 204 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.25;
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(player.walking_dir)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:206:7
[INFO] [stderr]     |
[INFO] [stderr] 206 |       player.speed_x = player.speed_x * 0.75;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x *= 0.75`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:210:7
[INFO] [stderr]     |
[INFO] [stderr] 210 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x += player.walking_dir as f32 * 0.1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:210:41
[INFO] [stderr]     |
[INFO] [stderr] 210 |       player.speed_x = player.speed_x + player.walking_dir as f32 * 0.1;
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(player.walking_dir)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:212:7
[INFO] [stderr]     |
[INFO] [stderr] 212 |       player.speed_x = player.speed_x * 0.95;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `player.speed_x *= 0.95`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:217:22
[INFO] [stderr]     |
[INFO] [stderr] 217 |     player.speed_x = player.walking_dir as f32 * SPEED_X_MAX;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(player.walking_dir)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:40
[INFO] [stderr]     |
[INFO] [stderr] 231 |   if player.x > display.left as f32 + (display.width as f32 * 0.66) {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:233:34
[INFO] [stderr]     |
[INFO] [stderr] 233 |       display.left = (player.x - display.width as f32 * 0.66) as usize;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:235:47
[INFO] [stderr]     |
[INFO] [stderr] 235 |   } else if player.x < display.left as f32 + (display.width as f32 * 0.33) {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:237:34
[INFO] [stderr]     |
[INFO] [stderr] 237 |       display.left = (player.x - display.width as f32 * 0.33) as usize;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(display.width)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/main.rs:295:5
[INFO] [stderr]     |
[INFO] [stderr] 295 |     Err(_) => panic!("Could not load level!"),
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/main.rs:297:30
[INFO] [stderr]     |
[INFO] [stderr] 297 |   let lines = contents.split("\n");
[INFO] [stderr]     |                              ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `y` is used as a loop counter. Consider using `for (y, item) in lines.enumerate()` or similar iterators
[INFO] [stderr]    --> src/main.rs:300:15
[INFO] [stderr]     |
[INFO] [stderr] 300 |   for line in lines {
[INFO] [stderr]     |               ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "2b716bfdaa91d91d0b30b79d9fb2ec01aab558e25144461cdd37592723e465ee"`
[INFO] running `"docker" "rm" "-f" "2b716bfdaa91d91d0b30b79d9fb2ec01aab558e25144461cdd37592723e465ee"`
[INFO] [stdout] 2b716bfdaa91d91d0b30b79d9fb2ec01aab558e25144461cdd37592723e465ee