[INFO] updating cached repository h3nnn4n/mandelbrot-oxide
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/h3nnn4n/mandelbrot-oxide
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/h3nnn4n/mandelbrot-oxide" "work/ex/clippy-test-run/sources/stable/gh/h3nnn4n/mandelbrot-oxide"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/h3nnn4n/mandelbrot-oxide'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/h3nnn4n/mandelbrot-oxide" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/h3nnn4n/mandelbrot-oxide"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/h3nnn4n/mandelbrot-oxide'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6dd28f6c84ffc1b970f2ca5673ee74997faa47b6
[INFO] sha for GitHub repo h3nnn4n/mandelbrot-oxide: 6dd28f6c84ffc1b970f2ca5673ee74997faa47b6
[INFO] validating manifest of h3nnn4n/mandelbrot-oxide 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 h3nnn4n/mandelbrot-oxide 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 h3nnn4n/mandelbrot-oxide
[INFO] finished frobbing h3nnn4n/mandelbrot-oxide
[INFO] frobbed toml for h3nnn4n/mandelbrot-oxide written to work/ex/clippy-test-run/sources/stable/gh/h3nnn4n/mandelbrot-oxide/Cargo.toml
[INFO] started frobbing h3nnn4n/mandelbrot-oxide
[INFO] finished frobbing h3nnn4n/mandelbrot-oxide
[INFO] frobbed toml for h3nnn4n/mandelbrot-oxide written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/h3nnn4n/mandelbrot-oxide/Cargo.toml
[INFO] crate h3nnn4n/mandelbrot-oxide 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 h3nnn4n/mandelbrot-oxide 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/h3nnn4n/mandelbrot-oxide:/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] 0572025183c3ab6f3238663f77ff2c99709ad8ca26906d4d1b6cdfac5b16e029
[INFO] running `"docker" "start" "-a" "0572025183c3ab6f3238663f77ff2c99709ad8ca26906d4d1b6cdfac5b16e029"`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking num-complex v0.2.0
[INFO] [stderr]     Checking num-bigint v0.2.0
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking mandelbrot-oxide v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/config.rs:19:23
[INFO] [stderr]    |
[INFO] [stderr] 19 |             xcenter: -0.74364085,
[INFO] [stderr]    |                       ^^^^^^^^^^ help: consider: `0.743_640_85`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/config.rs:20:22
[INFO] [stderr]    |
[INFO] [stderr] 20 |             ycenter: 0.13182733,
[INFO] [stderr]    |                      ^^^^^^^^^^ help: consider: `0.131_827_33`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/config.rs:22:19
[INFO] [stderr]    |
[INFO] [stderr] 22 |             zoom: 0.00012068 / 8.0,
[INFO] [stderr]    |                   ^^^^^^^^^^ help: consider: `0.000_120_68`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]  --> src/image.rs:3:83
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn write_bytes(outfile_name: &String, buf: &Vec<u8>, width: u32, height: u32) -> () {
[INFO] [stderr]   |                                                                                   ^^^^^ help: remove the `-> ()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/image.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     return (buf, info.width, info.height);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(buf, info.width, info.height)`
[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/mandelbrot.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     return 0;
[INFO] [stderr]    |     ^^^^^^^^^ help: remove `return` as shown: `0`
[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: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/color.rs:4:31
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn load_palette(filename: &String) -> (Vec<(u8, u8, u8)>, u32) {
[INFO] [stderr]   |                               ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/image.rs:3:34
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn write_bytes(outfile_name: &String, buf: &Vec<u8>, width: u32, height: u32) -> () {
[INFO] [stderr]   |                                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/image.rs:3:48
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn write_bytes(outfile_name: &String, buf: &Vec<u8>, width: u32, height: u32) -> () {
[INFO] [stderr]   |                                                ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]  --> src/image.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let ref mut wr = ::std::io::BufWriter::new(outfile);
[INFO] [stderr]   |     ----^^^^^^^^^^-------------------------------------- help: try: `let wr = &mut ::std::io::BufWriter::new(outfile);`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/image.rs:18:32
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn read_bytes(infile_name: &String) -> (Vec<u8>, u32, u32) {
[INFO] [stderr]    |                                ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `vec`.
[INFO] [stderr]   --> src/image.rs:50:14
[INFO] [stderr]    |
[INFO] [stderr] 50 |     for i in 0..vec.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 50 |     for <item> in &vec {
[INFO] [stderr]    |         ^^^^^^    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/mandelbrot.rs:30:23
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let real = minx + (x as f64) * (maxx - minx) / (config.width as f64);
[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/mandelbrot.rs:30:52
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let real = minx + (x as f64) * (maxx - minx) / (config.width as f64);
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(config.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/mandelbrot.rs:31:23
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let imag = miny + (y as f64) * (maxy - miny) / (config.height as f64);
[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/mandelbrot.rs:31:52
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let imag = miny + (y as f64) * (maxy - miny) / (config.height as f64);
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(config.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/mandelbrot.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut z = c.clone();
[INFO] [stderr]    |                 ^^^^^^^^^ help: try removing the `clone` call: `c`
[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: long literal lacking separators
[INFO] [stderr]   --> src/config.rs:19:23
[INFO] [stderr]    |
[INFO] [stderr] 19 |             xcenter: -0.74364085,
[INFO] [stderr]    |                       ^^^^^^^^^^ help: consider: `0.743_640_85`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/config.rs:20:22
[INFO] [stderr]    |
[INFO] [stderr] 20 |             ycenter: 0.13182733,
[INFO] [stderr]    |                      ^^^^^^^^^^ help: consider: `0.131_827_33`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/config.rs:22:19
[INFO] [stderr]    |
[INFO] [stderr] 22 |             zoom: 0.00012068 / 8.0,
[INFO] [stderr]    |                   ^^^^^^^^^^ help: consider: `0.000_120_68`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]  --> src/image.rs:3:83
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn write_bytes(outfile_name: &String, buf: &Vec<u8>, width: u32, height: u32) -> () {
[INFO] [stderr]   |                                                                                   ^^^^^ help: remove the `-> ()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/image.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     return (buf, info.width, info.height);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(buf, info.width, info.height)`
[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/mandelbrot.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     return 0;
[INFO] [stderr]    |     ^^^^^^^^^ help: remove `return` as shown: `0`
[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: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/color.rs:4:31
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn load_palette(filename: &String) -> (Vec<(u8, u8, u8)>, u32) {
[INFO] [stderr]   |                               ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/image.rs:3:34
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn write_bytes(outfile_name: &String, buf: &Vec<u8>, width: u32, height: u32) -> () {
[INFO] [stderr]   |                                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]  --> src/image.rs:3:48
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn write_bytes(outfile_name: &String, buf: &Vec<u8>, width: u32, height: u32) -> () {
[INFO] [stderr]   |                                                ^^^^^^^^ help: change this to: `&[u8]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]  --> src/image.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let ref mut wr = ::std::io::BufWriter::new(outfile);
[INFO] [stderr]   |     ----^^^^^^^^^^-------------------------------------- help: try: `let wr = &mut ::std::io::BufWriter::new(outfile);`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/image.rs:18:32
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn read_bytes(infile_name: &String) -> (Vec<u8>, u32, u32) {
[INFO] [stderr]    |                                ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `vec`.
[INFO] [stderr]   --> src/image.rs:50:14
[INFO] [stderr]    |
[INFO] [stderr] 50 |     for i in 0..vec.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 50 |     for <item> in &vec {
[INFO] [stderr]    |         ^^^^^^    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/mandelbrot.rs:30:23
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let real = minx + (x as f64) * (maxx - minx) / (config.width as f64);
[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/mandelbrot.rs:30:52
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let real = minx + (x as f64) * (maxx - minx) / (config.width as f64);
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(config.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/mandelbrot.rs:31:23
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let imag = miny + (y as f64) * (maxy - miny) / (config.height as f64);
[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/mandelbrot.rs:31:52
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let imag = miny + (y as f64) * (maxy - miny) / (config.height as f64);
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(config.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/mandelbrot.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut z = c.clone();
[INFO] [stderr]    |                 ^^^^^^^^^ help: try removing the `clone` call: `c`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 9.13s
[INFO] running `"docker" "inspect" "0572025183c3ab6f3238663f77ff2c99709ad8ca26906d4d1b6cdfac5b16e029"`
[INFO] running `"docker" "rm" "-f" "0572025183c3ab6f3238663f77ff2c99709ad8ca26906d4d1b6cdfac5b16e029"`
[INFO] [stdout] 0572025183c3ab6f3238663f77ff2c99709ad8ca26906d4d1b6cdfac5b16e029