[INFO] updating cached repository asheidan/rusty-mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/asheidan/rusty-mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/asheidan/rusty-mandelbrot" "work/ex/clippy-test-run/sources/stable/gh/asheidan/rusty-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/asheidan/rusty-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/asheidan/rusty-mandelbrot" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/asheidan/rusty-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/asheidan/rusty-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b1827df73d695ca7f1d8c9e8049b150145a8418a
[INFO] sha for GitHub repo asheidan/rusty-mandelbrot: b1827df73d695ca7f1d8c9e8049b150145a8418a
[INFO] validating manifest of asheidan/rusty-mandelbrot 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 asheidan/rusty-mandelbrot 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 asheidan/rusty-mandelbrot
[INFO] finished frobbing asheidan/rusty-mandelbrot
[INFO] frobbed toml for asheidan/rusty-mandelbrot written to work/ex/clippy-test-run/sources/stable/gh/asheidan/rusty-mandelbrot/Cargo.toml
[INFO] started frobbing asheidan/rusty-mandelbrot
[INFO] finished frobbing asheidan/rusty-mandelbrot
[INFO] frobbed toml for asheidan/rusty-mandelbrot written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/asheidan/rusty-mandelbrot/Cargo.toml
[INFO] crate asheidan/rusty-mandelbrot 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 asheidan/rusty-mandelbrot against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/asheidan/rusty-mandelbrot:/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] 07fea05e71c429437698eff42f8f355b7d363ff649a20ac2677d4a5820ff02d6
[INFO] running `"docker" "start" "-a" "07fea05e71c429437698eff42f8f355b7d363ff649a20ac2677d4a5820ff02d6"`
[INFO] [stderr]     Checking rusty-mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ppm.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return PPM { width: width, height: height, data: buffer };
[INFO] [stderr]    |                      ^^^^^^^^^^^^ help: replace it with: `width`
[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/ppm.rs:31:36
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return PPM { width: width, height: height, data: buffer };
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: replace it with: `height`
[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/ppm.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return PPM { width: width, height: height, data: buffer };
[INFO] [stderr]    |                      ^^^^^^^^^^^^ help: replace it with: `width`
[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/ppm.rs:31:36
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return PPM { width: width, height: height, data: buffer };
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: replace it with: `height`
[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: unneeded return statement
[INFO] [stderr]   --> src/ppm.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return PPM { width: width, height: height, data: buffer };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `PPM { width: width, height: height, data: buffer }`
[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/ppm.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         return 3 * self.width * self.height;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `3 * self.width * self.height`
[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/ppm.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         return Ok(());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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/render.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     return if iterations == MAX_ITERATIONS { u32::max_value() } else { iterations * PALETTE_SIZE / MAX_ITERATIONS };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `if iterations == MAX_ITERATIONS { u32::max_value() } else { iterations * PALETTE_SIZE / MAX_ITERATIONS }`
[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: method is never used: `get_pixel`
[INFO] [stderr]   --> src/ppm.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn get_pixel(&self, x: u32, y: u32) -> Option<RGB> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: some ranges overlap
[INFO] [stderr]  --> src/palette.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |         0 ... 205 => {
[INFO] [stderr]   |         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::match_overlapping_arm)] on by default
[INFO] [stderr] note: overlaps with this
[INFO] [stderr]  --> src/palette.rs:11:9
[INFO] [stderr]   |
[INFO] [stderr] 11|         205 ... 460 => {
[INFO] [stderr]   |         ^^^^^^^^^^^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_overlapping_arm
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/ppm.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         try!(file.write(header.as_bytes()));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[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] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/ppm.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |         try!(file.write(&self.data));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[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: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:31:36
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let step_x = (MAX_X - MIN_X) / (RES_X as f64);
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: try: `f64::from(RES_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/main.rs:32:36
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let step_y = (MAX_Y - MIN_Y) / (RES_Y as f64);
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: try: `f64::from(RES_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/main.rs:37:39
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let imaginary_coord = MAX_Y - (y as f64) * step_y;
[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/main.rs:41:38
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let real_coord = MIN_X + (x as f64) * step_x;
[INFO] [stderr]    |                                      ^^^^^^^^^^ help: try: `f64::from(x)`
[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] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/ppm.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         return PPM { width: width, height: height, data: buffer };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `PPM { width: width, height: height, data: buffer }`
[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/ppm.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         return 3 * self.width * self.height;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `3 * self.width * self.height`
[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/ppm.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         return Ok(());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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/render.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     return if iterations == MAX_ITERATIONS { u32::max_value() } else { iterations * PALETTE_SIZE / MAX_ITERATIONS };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `if iterations == MAX_ITERATIONS { u32::max_value() } else { iterations * PALETTE_SIZE / MAX_ITERATIONS }`
[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] error: Could not compile `rusty-mandelbrot`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: some ranges overlap
[INFO] [stderr]  --> src/palette.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |         0 ... 205 => {
[INFO] [stderr]   |         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::match_overlapping_arm)] on by default
[INFO] [stderr] note: overlaps with this
[INFO] [stderr]  --> src/palette.rs:11:9
[INFO] [stderr]   |
[INFO] [stderr] 11|         205 ... 460 => {
[INFO] [stderr]   |         ^^^^^^^^^^^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_overlapping_arm
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/ppm.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |         try!(file.write(header.as_bytes()));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[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] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/ppm.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |         try!(file.write(&self.data));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[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: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:31:36
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let step_x = (MAX_X - MIN_X) / (RES_X as f64);
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: try: `f64::from(RES_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/main.rs:32:36
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let step_y = (MAX_Y - MIN_Y) / (RES_Y as f64);
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: try: `f64::from(RES_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/main.rs:37:39
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let imaginary_coord = MAX_Y - (y as f64) * step_y;
[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/main.rs:41:38
[INFO] [stderr]    |
[INFO] [stderr] 41 |             let real_coord = MIN_X + (x as f64) * step_x;
[INFO] [stderr]    |                                      ^^^^^^^^^^ help: try: `f64::from(x)`
[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] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rusty-mandelbrot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "07fea05e71c429437698eff42f8f355b7d363ff649a20ac2677d4a5820ff02d6"`
[INFO] running `"docker" "rm" "-f" "07fea05e71c429437698eff42f8f355b7d363ff649a20ac2677d4a5820ff02d6"`
[INFO] [stdout] 07fea05e71c429437698eff42f8f355b7d363ff649a20ac2677d4a5820ff02d6