[INFO] updating cached repository Iquiji/rust-mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Iquiji/rust-mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Iquiji/rust-mandelbrot" "work/ex/clippy-test-run/sources/stable/gh/Iquiji/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Iquiji/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Iquiji/rust-mandelbrot" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Iquiji/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Iquiji/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ad94ec1432ff9d344209b33058754a4bde97a6e1
[INFO] sha for GitHub repo Iquiji/rust-mandelbrot: ad94ec1432ff9d344209b33058754a4bde97a6e1
[INFO] validating manifest of Iquiji/rust-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 Iquiji/rust-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 Iquiji/rust-mandelbrot
[INFO] finished frobbing Iquiji/rust-mandelbrot
[INFO] frobbed toml for Iquiji/rust-mandelbrot written to work/ex/clippy-test-run/sources/stable/gh/Iquiji/rust-mandelbrot/Cargo.toml
[INFO] started frobbing Iquiji/rust-mandelbrot
[INFO] finished frobbing Iquiji/rust-mandelbrot
[INFO] frobbed toml for Iquiji/rust-mandelbrot written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Iquiji/rust-mandelbrot/Cargo.toml
[INFO] crate Iquiji/rust-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 Iquiji/rust-mandelbrot against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Iquiji/rust-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] 61471a7e9916462a6869affaaf4065e89ac9ce1b7e96297838d99091c41e543d
[INFO] running `"docker" "start" "-a" "61471a7e9916462a6869affaaf4065e89ac9ce1b7e96297838d99091c41e543d"`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.1.9
[INFO] [stderr]    Compiling rug v1.2.1
[INFO] [stderr]     Checking termios v0.3.0
[INFO] [stderr]     Checking num-complex v0.2.0
[INFO] [stderr]    Compiling syn v0.15.8
[INFO] [stderr]     Checking console v0.6.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.0
[INFO] [stderr]     Checking rust-mandelbrot-manualrank v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let x = center.0 +(x as f64) / (img_width as f64)  *  mandel_width - 0.5 * mandel_width  ;
[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/main.rs:45:36
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let x = center.0 +(x as f64) / (img_width as f64)  *  mandel_width - 0.5 * mandel_width  ;
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(img_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/main.rs:46:23
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let y = center.1 +(y as f64) / (img_height as f64) *  mandel_height - 0.5 * mandel_height  ;
[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:46:36
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let y = center.1 +(y as f64) / (img_height as f64) *  mandel_height - 0.5 * mandel_height  ;
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(img_height)`
[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/main.rs:86:28
[INFO] [stderr]    |
[INFO] [stderr] 86 |     let mut it_new : f64 = it.clone().into();
[INFO] [stderr]    |                            ^^^^^^^^^^ help: try removing the `clone` call: `it`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         zoom = zoom / (1.0 + 1.0 / 12.0);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `zoom /= (1.0 + 1.0 / 12.0)`
[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 u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let x = center.0 +(x as f64) / (img_width as f64)  *  mandel_width - 0.5 * mandel_width  ;
[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/main.rs:45:36
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let x = center.0 +(x as f64) / (img_width as f64)  *  mandel_width - 0.5 * mandel_width  ;
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^ help: try: `f64::from(img_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/main.rs:46:23
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let y = center.1 +(y as f64) / (img_height as f64) *  mandel_height - 0.5 * mandel_height  ;
[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:46:36
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let y = center.1 +(y as f64) / (img_height as f64) *  mandel_height - 0.5 * mandel_height  ;
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(img_height)`
[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/main.rs:86:28
[INFO] [stderr]    |
[INFO] [stderr] 86 |     let mut it_new : f64 = it.clone().into();
[INFO] [stderr]    |                            ^^^^^^^^^^ help: try removing the `clone` call: `it`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/main.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         zoom = zoom / (1.0 + 1.0 / 12.0);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `zoom /= (1.0 + 1.0 / 12.0)`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 3m 44s
[INFO] running `"docker" "inspect" "61471a7e9916462a6869affaaf4065e89ac9ce1b7e96297838d99091c41e543d"`
[INFO] running `"docker" "rm" "-f" "61471a7e9916462a6869affaaf4065e89ac9ce1b7e96297838d99091c41e543d"`
[INFO] [stdout] 61471a7e9916462a6869affaaf4065e89ac9ce1b7e96297838d99091c41e543d