[INFO] crate captcha 0.0.7 is already in cache
[INFO] extracting crate captcha 0.0.7 into work/ex/clippy-test-run/sources/stable/reg/captcha/0.0.7
[INFO] extracting crate captcha 0.0.7 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/captcha/0.0.7
[INFO] validating manifest of captcha-0.0.7 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 captcha-0.0.7 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 captcha-0.0.7
[INFO] finished frobbing captcha-0.0.7
[INFO] frobbed toml for captcha-0.0.7 written to work/ex/clippy-test-run/sources/stable/reg/captcha/0.0.7/Cargo.toml
[INFO] started frobbing captcha-0.0.7
[INFO] finished frobbing captcha-0.0.7
[INFO] frobbed toml for captcha-0.0.7 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/captcha/0.0.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 captcha-0.0.7 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/captcha/0.0.7:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 86646d7e3a3e6b4467c806f763ab393bbc1063dd153dfc11d16a8427ee36fd8d
[INFO] running `"docker" "start" "-a" "86646d7e3a3e6b4467c806f763ab393bbc1063dd153dfc11d16a8427ee36fd8d"`
[INFO] [stderr]    Compiling lodepng v1.2.2
[INFO] [stderr]     Checking captcha v0.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/noise.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             prob: prob
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `prob`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/grid.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |             x_gap: x_gap,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `x_gap`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/grid.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             y_gap: y_gap
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `y_gap`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/cow.rs:29:15
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Cow { n: n, .. self }
[INFO] [stderr]    |               ^^^^ help: replace it with: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/cow.rs:33:15
[INFO] [stderr]    |
[INFO] [stderr] 33 |         Cow { min_radius: min_radius, .. self }
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `min_radius`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/cow.rs:37:15
[INFO] [stderr]    |
[INFO] [stderr] 37 |         Cow { max_radius: max_radius, .. self }
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `max_radius`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let h = i.height() as i32;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let w = i.width() as i32;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let mut v = vec![];
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 8th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 let d = ((dy * dy + dx * dx) as f32).sqrt() as i32;
[INFO] [stderr]    |                     ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:89:17
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let v = Self::get_pixels(p.0 as i32, p.1 as i32, r, i);
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/dots.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |             n: n,
[INFO] [stderr]    |             ^^^^ help: replace it with: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/wave.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |             f: f,
[INFO] [stderr]    |             ^^^^ help: replace it with: `f`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/wave.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             amp: amp,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `amp`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/wave.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |         Wave { d: d, .. self }
[INFO] [stderr]    |                ^^^^ help: replace it with: `d`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/images/mod.rs:87:13
[INFO] [stderr]    |
[INFO] [stderr] 87 |         let h = self.height();
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/images/mod.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let w = self.width();
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/images/mod.rs:94:21
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 let d = ((dy * dy + dx * dx) as f32).sqrt() as u32;
[INFO] [stderr]    |                     ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `left`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:25
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: replace it with: `right`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:39
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |                                       ^^^^^^^^ help: replace it with: `top`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:49
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^ help: replace it with: `bottom`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/noise.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             prob: prob
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `prob`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/grid.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |             x_gap: x_gap,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `x_gap`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/grid.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             y_gap: y_gap
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `y_gap`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/cow.rs:29:15
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Cow { n: n, .. self }
[INFO] [stderr]    |               ^^^^ help: replace it with: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/cow.rs:33:15
[INFO] [stderr]    |
[INFO] [stderr] 33 |         Cow { min_radius: min_radius, .. self }
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `min_radius`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/cow.rs:37:15
[INFO] [stderr]    |
[INFO] [stderr] 37 |         Cow { max_radius: max_radius, .. self }
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `max_radius`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let h = i.height() as i32;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let w = i.width() as i32;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let mut v = vec![];
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 8th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 let d = ((dy * dy + dx * dx) as f32).sqrt() as i32;
[INFO] [stderr]    |                     ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/filters/cow.rs:89:17
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let v = Self::get_pixels(p.0 as i32, p.1 as i32, r, i);
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/dots.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |             n: n,
[INFO] [stderr]    |             ^^^^ help: replace it with: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/wave.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |             f: f,
[INFO] [stderr]    |             ^^^^ help: replace it with: `f`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/wave.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             amp: amp,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `amp`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/filters/wave.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |         Wave { d: d, .. self }
[INFO] [stderr]    |                ^^^^ help: replace it with: `d`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/images/mod.rs:87:13
[INFO] [stderr]    |
[INFO] [stderr] 87 |         let h = self.height();
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/images/mod.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let w = self.width();
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/images/mod.rs:94:21
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 let d = ((dy * dy + dx * dx) as f32).sqrt() as u32;
[INFO] [stderr]    |                     ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `left`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:25
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: replace it with: `right`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:39
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |                                       ^^^^^^^^ help: replace it with: `top`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:88:49
[INFO] [stderr]    |
[INFO] [stderr] 88 |             left: left, right: right, top: top, bottom: bottom
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^ help: replace it with: `bottom`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `filters::cow::Cow`
[INFO] [stderr]   --> src/filters/cow.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | /     pub fn new() -> Cow {
[INFO] [stderr] 19 | |         Cow {
[INFO] [stderr] 20 | |             min_radius: 10,
[INFO] [stderr] 21 | |             max_radius: 20,
[INFO] [stderr] ...  |
[INFO] [stderr] 25 | |         }
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 9  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/filters/cow.rs:86:21
[INFO] [stderr]    |
[INFO] [stderr] 86 |             let p = thread_rng().choose_mut(&mut pixels).expect("failed").clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*thread_rng().choose_mut(&mut pixels).expect("failed")`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:49:30
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let f = (x as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                              ^^^^^^^^ help: try: `f64::from(x)`
[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 u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:49:69
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let f = (x as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^ help: try: `f64::from(i.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 u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |                     let f = (y as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                              ^^^^^^^^ help: try: `f64::from(y)`
[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 u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:60:69
[INFO] [stderr]    |
[INFO] [stderr] 60 |                     let f = (y as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^ help: try: `f64::from(i.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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/images/mod.rs:68:17
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let p = self.img.get_pixel(x, y).clone();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.img.get_pixel(x, y)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `Captcha`
[INFO] [stderr]    --> src/lib.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 | /     pub fn new() -> Captcha {
[INFO] [stderr] 104 | |         // TODO fixed width + height
[INFO] [stderr] 105 | |         let w = 400;
[INFO] [stderr] 106 | |         let h = 300;
[INFO] [stderr] ...   |
[INFO] [stderr] 112 | |         }
[INFO] [stderr] 113 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 101 | impl Default for Captcha {
[INFO] [stderr] 102 |     fn default() -> Self {
[INFO] [stderr] 103 |         Self::new()
[INFO] [stderr] 104 |     }
[INFO] [stderr] 105 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:150:42
[INFO] [stderr]     |
[INFO] [stderr] 150 |                         Some(i) => Some((c.clone(), i))
[INFO] [stderr]     |                                          ^^^^^^^^^ help: try dereferencing it: `*c`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:159:9
[INFO] [stderr]     |
[INFO] [stderr] 159 | /         match self.random_char_as_image() {
[INFO] [stderr] 160 | |             Some((c, i)) => {
[INFO] [stderr] 161 | |                 let x = self.text_area.right;
[INFO] [stderr] 162 | |                 let y = (self.text_area.bottom + self.text_area.top) / 2 - i.height() / 2;
[INFO] [stderr] ...   |
[INFO] [stderr] 170 | |             _ => { }
[INFO] [stderr] 171 | |         }
[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] 159 |         if let Some((c, i)) = self.random_char_as_image() {
[INFO] [stderr] 160 |     let x = self.text_area.right;
[INFO] [stderr] 161 |     let y = (self.text_area.bottom + self.text_area.top) / 2 - i.height() / 2;
[INFO] [stderr] 162 |     self.img.add_image(x, y, &i);
[INFO] [stderr] 163 | 
[INFO] [stderr] 164 |     self.text_area.top    = min(self.text_area.top, y);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:202:24
[INFO] [stderr]     |
[INFO] [stderr] 202 |         for (y, iy) in (area.top..area.bottom + 1).zip(0..h + 1) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(area.top..=area.bottom)`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:202:56
[INFO] [stderr]     |
[INFO] [stderr] 202 |         for (y, iy) in (area.top..area.bottom + 1).zip(0..h + 1) {
[INFO] [stderr]     |                                                        ^^^^^^^^ help: use: `0..=h`
[INFO] [stderr]     |
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:203:28
[INFO] [stderr]     |
[INFO] [stderr] 203 |             for (x, ix) in (area.left..area.right + 1).zip(0..w + 1) {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(area.left..=area.right)`
[INFO] [stderr]     |
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:203:60
[INFO] [stderr]     |
[INFO] [stderr] 203 |             for (x, ix) in (area.left..area.right + 1).zip(0..w + 1) {
[INFO] [stderr]     |                                                            ^^^^^^^^ help: use: `0..=w`
[INFO] [stderr]     |
[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: you should consider deriving a `Default` implementation for `filters::cow::Cow`
[INFO] [stderr]   --> src/filters/cow.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | /     pub fn new() -> Cow {
[INFO] [stderr] 19 | |         Cow {
[INFO] [stderr] 20 | |             min_radius: 10,
[INFO] [stderr] 21 | |             max_radius: 20,
[INFO] [stderr] ...  |
[INFO] [stderr] 25 | |         }
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 9  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/filters/cow.rs:86:21
[INFO] [stderr]    |
[INFO] [stderr] 86 |             let p = thread_rng().choose_mut(&mut pixels).expect("failed").clone();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*thread_rng().choose_mut(&mut pixels).expect("failed")`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:49:30
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let f = (x as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                              ^^^^^^^^ help: try: `f64::from(x)`
[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 u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:49:69
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     let f = (x as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^ help: try: `f64::from(i.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 u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |                     let f = (y as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                              ^^^^^^^^ help: try: `f64::from(y)`
[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 u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters/wave.rs:60:69
[INFO] [stderr]    |
[INFO] [stderr] 60 |                     let f = (y as f64 * 2.0 * consts::PI * self.f / i.width() as f64).sin() * self.amp;
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^^^^ help: try: `f64::from(i.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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/images/mod.rs:68:17
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let p = self.img.get_pixel(x, y).clone();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.img.get_pixel(x, y)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `Captcha`
[INFO] [stderr]    --> src/lib.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 | /     pub fn new() -> Captcha {
[INFO] [stderr] 104 | |         // TODO fixed width + height
[INFO] [stderr] 105 | |         let w = 400;
[INFO] [stderr] 106 | |         let h = 300;
[INFO] [stderr] ...   |
[INFO] [stderr] 112 | |         }
[INFO] [stderr] 113 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 101 | impl Default for Captcha {
[INFO] [stderr] 102 |     fn default() -> Self {
[INFO] [stderr] 103 |         Self::new()
[INFO] [stderr] 104 |     }
[INFO] [stderr] 105 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:150:42
[INFO] [stderr]     |
[INFO] [stderr] 150 |                         Some(i) => Some((c.clone(), i))
[INFO] [stderr]     |                                          ^^^^^^^^^ help: try dereferencing it: `*c`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:159:9
[INFO] [stderr]     |
[INFO] [stderr] 159 | /         match self.random_char_as_image() {
[INFO] [stderr] 160 | |             Some((c, i)) => {
[INFO] [stderr] 161 | |                 let x = self.text_area.right;
[INFO] [stderr] 162 | |                 let y = (self.text_area.bottom + self.text_area.top) / 2 - i.height() / 2;
[INFO] [stderr] ...   |
[INFO] [stderr] 170 | |             _ => { }
[INFO] [stderr] 171 | |         }
[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] 159 |         if let Some((c, i)) = self.random_char_as_image() {
[INFO] [stderr] 160 |     let x = self.text_area.right;
[INFO] [stderr] 161 |     let y = (self.text_area.bottom + self.text_area.top) / 2 - i.height() / 2;
[INFO] [stderr] 162 |     self.img.add_image(x, y, &i);
[INFO] [stderr] 163 | 
[INFO] [stderr] 164 |     self.text_area.top    = min(self.text_area.top, y);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:202:24
[INFO] [stderr]     |
[INFO] [stderr] 202 |         for (y, iy) in (area.top..area.bottom + 1).zip(0..h + 1) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(area.top..=area.bottom)`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:202:56
[INFO] [stderr]     |
[INFO] [stderr] 202 |         for (y, iy) in (area.top..area.bottom + 1).zip(0..h + 1) {
[INFO] [stderr]     |                                                        ^^^^^^^^ help: use: `0..=h`
[INFO] [stderr]     |
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:203:28
[INFO] [stderr]     |
[INFO] [stderr] 203 |             for (x, ix) in (area.left..area.right + 1).zip(0..w + 1) {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(area.left..=area.right)`
[INFO] [stderr]     |
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/lib.rs:203:60
[INFO] [stderr]     |
[INFO] [stderr] 203 |             for (x, ix) in (area.left..area.right + 1).zip(0..w + 1) {
[INFO] [stderr]     |                                                            ^^^^^^^^ help: use: `0..=w`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.54s
[INFO] running `"docker" "inspect" "86646d7e3a3e6b4467c806f763ab393bbc1063dd153dfc11d16a8427ee36fd8d"`
[INFO] running `"docker" "rm" "-f" "86646d7e3a3e6b4467c806f763ab393bbc1063dd153dfc11d16a8427ee36fd8d"`
[INFO] [stdout] 86646d7e3a3e6b4467c806f763ab393bbc1063dd153dfc11d16a8427ee36fd8d