[INFO] updating cached repository hemangandhi/ascii-cam
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hemangandhi/ascii-cam
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hemangandhi/ascii-cam" "work/ex/clippy-test-run/sources/stable/gh/hemangandhi/ascii-cam"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/hemangandhi/ascii-cam'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hemangandhi/ascii-cam" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hemangandhi/ascii-cam"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hemangandhi/ascii-cam'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25b998ed9f1c0573b08f3e43da6fb06eb4a6699f
[INFO] sha for GitHub repo hemangandhi/ascii-cam: 25b998ed9f1c0573b08f3e43da6fb06eb4a6699f
[INFO] validating manifest of hemangandhi/ascii-cam 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 hemangandhi/ascii-cam 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 hemangandhi/ascii-cam
[INFO] finished frobbing hemangandhi/ascii-cam
[INFO] frobbed toml for hemangandhi/ascii-cam written to work/ex/clippy-test-run/sources/stable/gh/hemangandhi/ascii-cam/Cargo.toml
[INFO] started frobbing hemangandhi/ascii-cam
[INFO] finished frobbing hemangandhi/ascii-cam
[INFO] frobbed toml for hemangandhi/ascii-cam written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hemangandhi/ascii-cam/Cargo.toml
[INFO] crate hemangandhi/ascii-cam 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 hemangandhi/ascii-cam 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/gh/hemangandhi/ascii-cam:/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] 30fc315ef94e7a2a5caec03d75af3c7cad1a0c7ea4c9399723a82018bd2b8489
[INFO] running `"docker" "start" "-a" "30fc315ef94e7a2a5caec03d75af3c7cad1a0c7ea4c9399723a82018bd2b8489"`
[INFO] [stderr]     Checking ascii-cam v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/filters.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         return x - y;
[INFO] [stderr]   |         ^^^^^^^^^^^^^ help: remove `return` as shown: `x - y`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |         return y - x;
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `y - x`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     return (d_x * d_x + d_y * d_y + d_z * d_z).sqrt() as u32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(d_x * d_x + d_y * d_y + d_z * d_z).sqrt() as u32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     return Box::new(rv);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Box::new(rv)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         return dist.exp() / (sigma * sigma * 2.0 * PI);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `dist.exp() / (sigma * sigma * 2.0 * PI)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         return image::ImageBuffer::from_fn(ib.width(), ib.height(), inner);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `image::ImageBuffer::from_fn(ib.width(), ib.height(), inner)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 | /             return image::Rgb{
[INFO] [stderr] 47 | |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 48 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 46 |             image::Rgb{
[INFO] [stderr] 47 |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 48 |             }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 | /     return Box::new(move |ib| {
[INFO] [stderr] 57 | |         return image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 | |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 | |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |         });
[INFO] [stderr] 76 | |     });
[INFO] [stderr]    | |_______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 56 |     Box::new(move |ib| {
[INFO] [stderr] 57 |         return image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] 60 |                     if i < 0 || i >= (ib.width() as i32) || j < 0 || j >= (ib.height() as i32) {
[INFO] [stderr] 61 |                         continue;
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         return image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 | |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 | |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] 60 | |                     if i < 0 || i >= (ib.width() as i32) || j < 0 || j >= (ib.height() as i32) {
[INFO] [stderr] ...  |
[INFO] [stderr] 74 | |             };
[INFO] [stderr] 75 | |         });
[INFO] [stderr]    | |___________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 57 |         image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] 60 |                     if i < 0 || i >= (ib.width() as i32) || j < 0 || j >= (ib.height() as i32) {
[INFO] [stderr] 61 |                         continue;
[INFO] [stderr] 62 |                     }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             return image::Rgb{
[INFO] [stderr] 73 | |                 data: [255, 255, 255]
[INFO] [stderr] 74 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 72 |             image::Rgb{
[INFO] [stderr] 73 |                 data: [255, 255, 255]
[INFO] [stderr] 74 |             }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/filters.rs:80:5
[INFO] [stderr]     |
[INFO] [stderr] 80  | /     return Box::new(move |ib| {
[INFO] [stderr] 81  | |         return image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  | |             let top_left_x = wscale * x;
[INFO] [stderr] 83  | |             let top_left_y = hscale * y;
[INFO] [stderr] ...   |
[INFO] [stderr] 101 | |         });
[INFO] [stderr] 102 | |     });
[INFO] [stderr]     | |_______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 80  |     Box::new(move |ib| {
[INFO] [stderr] 81  |         return image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  |             let top_left_x = wscale * x;
[INFO] [stderr] 83  |             let top_left_y = hscale * y;
[INFO] [stderr] 84  |             let bottom_right_x = wscale * (x + 1) - 1;
[INFO] [stderr] 85  |             let bottom_right_y = hscale * (y + 1) - 1;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/filters.rs:81:9
[INFO] [stderr]     |
[INFO] [stderr] 81  | /         return image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  | |             let top_left_x = wscale * x;
[INFO] [stderr] 83  | |             let top_left_y = hscale * y;
[INFO] [stderr] 84  | |             let bottom_right_x = wscale * (x + 1) - 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 100 | |             };
[INFO] [stderr] 101 | |         });
[INFO] [stderr]     | |___________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 81  |         image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  |             let top_left_x = wscale * x;
[INFO] [stderr] 83  |             let top_left_y = hscale * y;
[INFO] [stderr] 84  |             let bottom_right_x = wscale * (x + 1) - 1;
[INFO] [stderr] 85  |             let bottom_right_y = hscale * (y + 1) - 1;
[INFO] [stderr] 86  |             let area = ((bottom_right_x - top_left_x) * (bottom_right_y - top_left_y)) as f64;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/filters.rs:98:13
[INFO] [stderr]     |
[INFO] [stderr] 98  | /             return image::Rgb{
[INFO] [stderr] 99  | |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 100 | |             };
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 98  |             image::Rgb{
[INFO] [stderr] 99  |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 100 |             }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/filters.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         return x - y;
[INFO] [stderr]   |         ^^^^^^^^^^^^^ help: remove `return` as shown: `x - y`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |         return y - x;
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: remove `return` as shown: `y - x`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     return (d_x * d_x + d_y * d_y + d_z * d_z).sqrt() as u32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(d_x * d_x + d_y * d_y + d_z * d_z).sqrt() as u32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     return Box::new(rv);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Box::new(rv)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         return dist.exp() / (sigma * sigma * 2.0 * PI);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `dist.exp() / (sigma * sigma * 2.0 * PI)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |         return image::ImageBuffer::from_fn(ib.width(), ib.height(), inner);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `image::ImageBuffer::from_fn(ib.width(), ib.height(), inner)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 | /             return image::Rgb{
[INFO] [stderr] 47 | |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 48 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 46 |             image::Rgb{
[INFO] [stderr] 47 |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 48 |             }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 | /     return Box::new(move |ib| {
[INFO] [stderr] 57 | |         return image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 | |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 | |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |         });
[INFO] [stderr] 76 | |     });
[INFO] [stderr]    | |_______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 56 |     Box::new(move |ib| {
[INFO] [stderr] 57 |         return image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] 60 |                     if i < 0 || i >= (ib.width() as i32) || j < 0 || j >= (ib.height() as i32) {
[INFO] [stderr] 61 |                         continue;
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         return image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 | |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 | |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] 60 | |                     if i < 0 || i >= (ib.width() as i32) || j < 0 || j >= (ib.height() as i32) {
[INFO] [stderr] ...  |
[INFO] [stderr] 74 | |             };
[INFO] [stderr] 75 | |         });
[INFO] [stderr]    | |___________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 57 |         image::ImageBuffer::from_fn(ib.width(), ib.height(), |x, y| {
[INFO] [stderr] 58 |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr] 59 |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr] 60 |                     if i < 0 || i >= (ib.width() as i32) || j < 0 || j >= (ib.height() as i32) {
[INFO] [stderr] 61 |                         continue;
[INFO] [stderr] 62 |                     }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/filters.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             return image::Rgb{
[INFO] [stderr] 73 | |                 data: [255, 255, 255]
[INFO] [stderr] 74 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 72 |             image::Rgb{
[INFO] [stderr] 73 |                 data: [255, 255, 255]
[INFO] [stderr] 74 |             }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/filters.rs:80:5
[INFO] [stderr]     |
[INFO] [stderr] 80  | /     return Box::new(move |ib| {
[INFO] [stderr] 81  | |         return image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  | |             let top_left_x = wscale * x;
[INFO] [stderr] 83  | |             let top_left_y = hscale * y;
[INFO] [stderr] ...   |
[INFO] [stderr] 101 | |         });
[INFO] [stderr] 102 | |     });
[INFO] [stderr]     | |_______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 80  |     Box::new(move |ib| {
[INFO] [stderr] 81  |         return image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  |             let top_left_x = wscale * x;
[INFO] [stderr] 83  |             let top_left_y = hscale * y;
[INFO] [stderr] 84  |             let bottom_right_x = wscale * (x + 1) - 1;
[INFO] [stderr] 85  |             let bottom_right_y = hscale * (y + 1) - 1;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/filters.rs:81:9
[INFO] [stderr]     |
[INFO] [stderr] 81  | /         return image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  | |             let top_left_x = wscale * x;
[INFO] [stderr] 83  | |             let top_left_y = hscale * y;
[INFO] [stderr] 84  | |             let bottom_right_x = wscale * (x + 1) - 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 100 | |             };
[INFO] [stderr] 101 | |         });
[INFO] [stderr]     | |___________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 81  |         image::ImageBuffer::from_fn(ib.width() / wscale, ib.height() / hscale, |x, y| {
[INFO] [stderr] 82  |             let top_left_x = wscale * x;
[INFO] [stderr] 83  |             let top_left_y = hscale * y;
[INFO] [stderr] 84  |             let bottom_right_x = wscale * (x + 1) - 1;
[INFO] [stderr] 85  |             let bottom_right_y = hscale * (y + 1) - 1;
[INFO] [stderr] 86  |             let area = ((bottom_right_x - top_left_x) * (bottom_right_y - top_left_y)) as f64;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/filters.rs:98:13
[INFO] [stderr]     |
[INFO] [stderr] 98  | /             return image::Rgb{
[INFO] [stderr] 99  | |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 100 | |             };
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 98  |             image::Rgb{
[INFO] [stderr] 99  |                 data: [pix[0] as u8, pix[1] as u8, pix[2] as u8]
[INFO] [stderr] 100 |             }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `carl2`
[INFO] [stderr]    --> src/main.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |     let carl2 = & *(filters::gaussian_blur(7.0));
[INFO] [stderr]     |         ^^^^^ help: consider using `_carl2` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `carl2`
[INFO] [stderr]    --> src/main.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |     let carl2 = & *(filters::gaussian_blur(7.0));
[INFO] [stderr]     |         ^^^^^ help: consider using `_carl2` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/filters.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn color_dist(this: &image::Rgb<u8>, other: &image::Rgb<u8>) -> u32{
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^ help: consider passing by value instead: `image::Rgb<u8>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/filters.rs:14:45
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn color_dist(this: &image::Rgb<u8>, other: &image::Rgb<u8>) -> u32{
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^ help: consider passing by value instead: `image::Rgb<u8>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/filters.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn color_dist(this: &image::Rgb<u8>, other: &image::Rgb<u8>) -> u32{
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^ help: consider passing by value instead: `image::Rgb<u8>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/filters.rs:14:45
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn color_dist(this: &image::Rgb<u8>, other: &image::Rgb<u8>) -> u32{
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^ help: consider passing by value instead: `image::Rgb<u8>`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:15:15
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d_x = super_safe_sub(this.data[0], other.data[0]) as f64;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(super_safe_sub(this.data[0], other.data[0]))`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let d_y = super_safe_sub(this.data[1], other.data[1]) as f64;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(super_safe_sub(this.data[1], other.data[1]))`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:15:15
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d_x = super_safe_sub(this.data[0], other.data[0]) as f64;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(super_safe_sub(this.data[0], other.data[0]))`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let d_y = super_safe_sub(this.data[1], other.data[1]) as f64;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(super_safe_sub(this.data[1], other.data[1]))`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:17:15
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let d_z = super_safe_sub(this.data[2], other.data[2]) as f64;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(super_safe_sub(this.data[2], other.data[2]))`
[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: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/filters.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub type ImageFilter<P: image::Pixel> = Fn(image::ImageBuffer<P, Vec<P::Subpixel>>) -> image::ImageBuffer<P, Vec<P::Subpixel>>;
[INFO] [stderr]    |                         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(type_alias_bounds)] on by default
[INFO] [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/filters.rs:21:70
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub type ImageFilter<P: image::Pixel> = Fn(image::ImageBuffer<P, Vec<P::Subpixel>>) -> image::ImageBuffer<P, Vec<P::Subpixel>>;
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/filters.rs:21:114
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub type ImageFilter<P: image::Pixel> = Fn(image::ImageBuffer<P, Vec<P::Subpixel>>) -> image::ImageBuffer<P, Vec<P::Subpixel>>;
[INFO] [stderr]    |                                                                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:17:15
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let d_z = super_safe_sub(this.data[2], other.data[2]) as f64;
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(super_safe_sub(this.data[2], other.data[2]))`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:25:23
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let dist = - (((cx - x) * (cx - x) + (cy - y) * (cy - y)) as f64 / (2.0 * sigma * sigma));
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from((cx - x) * (cx - x) + (cy - y) * (cy - 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: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]   --> src/filters.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub type ImageFilter<P: image::Pixel> = Fn(image::ImageBuffer<P, Vec<P::Subpixel>>) -> image::ImageBuffer<P, Vec<P::Subpixel>>;
[INFO] [stderr]    |                         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(type_alias_bounds)] on by default
[INFO] [stderr]    = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/filters.rs:21:70
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub type ImageFilter<P: image::Pixel> = Fn(image::ImageBuffer<P, Vec<P::Subpixel>>) -> image::ImageBuffer<P, Vec<P::Subpixel>>;
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^
[INFO] [stderr] help: use fully disambiguated paths (i.e., `<T as Trait>::Assoc`) to refer to associated types in type aliases
[INFO] [stderr]   --> src/filters.rs:21:114
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub type ImageFilter<P: image::Pixel> = Fn(image::ImageBuffer<P, Vec<P::Subpixel>>) -> image::ImageBuffer<P, Vec<P::Subpixel>>;
[INFO] [stderr]    |                                                                                                                  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:25:23
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let dist = - (((cx - x) * (cx - x) + (cy - y) * (cy - y)) as f64 / (2.0 * sigma * sigma));
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from((cx - x) * (cx - x) + (cy - y) * (cy - 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: manual implementation of an assign operation
[INFO] [stderr]   --> src/filters.rs:41:21
[INFO] [stderr]    |
[INFO] [stderr] 41 |                     pix[0] = (p.data[0] as f64) * gauss + pix[0];
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pix[0] += (p.data[0] as f64) * gauss`
[INFO] [stderr]    |
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/filters.rs:41:21
[INFO] [stderr]    |
[INFO] [stderr] 41 |                     pix[0] = (p.data[0] as f64) * gauss + pix[0];
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pix[0] += (p.data[0] as f64) * gauss`
[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]    = 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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:41:30
[INFO] [stderr]    |
[INFO] [stderr] 41 |                     pix[0] = (p.data[0] as f64) * gauss + pix[0];
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(p.data[0])`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:41:30
[INFO] [stderr]    |
[INFO] [stderr] 41 |                     pix[0] = (p.data[0] as f64) * gauss + pix[0];
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(p.data[0])`
[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/filters.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     pix[1] = (p.data[1] as f64) * gauss + pix[1];
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pix[1] += (p.data[1] as f64) * gauss`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/filters.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     pix[1] = (p.data[1] as f64) * gauss + pix[1];
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pix[1] += (p.data[1] as f64) * gauss`
[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] 
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     pix[1] = (p.data[1] as f64) * gauss + pix[1];
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(p.data[1])`
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     pix[1] = (p.data[1] as f64) * gauss + pix[1];
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(p.data[1])`
[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]    |
[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/filters.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     pix[2] = (p.data[2] as f64) * gauss + pix[2];
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pix[2] += (p.data[2] as f64) * gauss`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:43:30
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     pix[2] = (p.data[2] as f64) * gauss + pix[2];
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(p.data[2])`
[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/filters.rs:43:21
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     pix[2] = (p.data[2] as f64) * gauss + pix[2];
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `pix[2] += (p.data[2] as f64) * gauss`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:43:30
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     pix[2] = (p.data[2] as f64) * gauss + pix[2];
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(p.data[2])`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/filters.rs:58:22
[INFO] [stderr]    |
[INFO] [stderr] 58 |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(x as i32) - 1..=(x as i32)`
[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/filters.rs:59:26
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(y as i32) - 1..=(y as i32)`
[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/filters.rs:58:22
[INFO] [stderr]    |
[INFO] [stderr] 58 |             for i in (x as i32) - 1 .. (x as i32) + 1 {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(x as i32) - 1..=(x as i32)`
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:86:24
[INFO] [stderr]    |
[INFO] [stderr] 86 |             let area = ((bottom_right_x - top_left_x) * (bottom_right_y - top_left_y)) as f64;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from((bottom_right_x - top_left_x) * (bottom_right_y - top_left_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]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:92:31
[INFO] [stderr]    |
[INFO] [stderr] 92 |                     pix[0] += (p[0] as f64)/area;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: try: `f64::from(p[0])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:93:31
[INFO] [stderr]    |
[INFO] [stderr] 93 |                     pix[1] += (p[1] as f64)/area;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: try: `f64::from(p[1])`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:94:31
[INFO] [stderr]    |
[INFO] [stderr] 94 |                     pix[2] += (p[2] as f64)/area;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: try: `f64::from(p[2])`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/filters.rs:59:26
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 for j in (y as i32) - 1 .. (y as i32) + 1 {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(y as i32) - 1..=(y as i32)`
[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: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:86:24
[INFO] [stderr]    |
[INFO] [stderr] 86 |             let area = ((bottom_right_x - top_left_x) * (bottom_right_y - top_left_y)) as f64;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from((bottom_right_x - top_left_x) * (bottom_right_y - top_left_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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:92:31
[INFO] [stderr]    |
[INFO] [stderr] 92 |                     pix[0] += (p[0] as f64)/area;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: try: `f64::from(p[0])`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:93:31
[INFO] [stderr]    |
[INFO] [stderr] 93 |                     pix[1] += (p[1] as f64)/area;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: try: `f64::from(p[1])`
[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 u8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/filters.rs:94:31
[INFO] [stderr]    |
[INFO] [stderr] 94 |                     pix[2] += (p[2] as f64)/area;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^ help: try: `f64::from(p[2])`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 2.54s
[INFO] running `"docker" "inspect" "30fc315ef94e7a2a5caec03d75af3c7cad1a0c7ea4c9399723a82018bd2b8489"`
[INFO] running `"docker" "rm" "-f" "30fc315ef94e7a2a5caec03d75af3c7cad1a0c7ea4c9399723a82018bd2b8489"`
[INFO] [stdout] 30fc315ef94e7a2a5caec03d75af3c7cad1a0c7ea4c9399723a82018bd2b8489