[INFO] updating cached repository r2p2/rust-mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/r2p2/rust-mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/r2p2/rust-mandelbrot" "work/ex/clippy-test-run/sources/stable/gh/r2p2/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/r2p2/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/r2p2/rust-mandelbrot" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/r2p2/rust-mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/r2p2/rust-mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5cf2334de4e9a5a853089ee114ac8ff7d1677041
[INFO] sha for GitHub repo r2p2/rust-mandelbrot: 5cf2334de4e9a5a853089ee114ac8ff7d1677041
[INFO] validating manifest of r2p2/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 r2p2/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 r2p2/rust-mandelbrot
[INFO] finished frobbing r2p2/rust-mandelbrot
[INFO] frobbed toml for r2p2/rust-mandelbrot written to work/ex/clippy-test-run/sources/stable/gh/r2p2/rust-mandelbrot/Cargo.toml
[INFO] started frobbing r2p2/rust-mandelbrot
[INFO] finished frobbing r2p2/rust-mandelbrot
[INFO] frobbed toml for r2p2/rust-mandelbrot written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/r2p2/rust-mandelbrot/Cargo.toml
[INFO] crate r2p2/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 r2p2/rust-mandelbrot against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/r2p2/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] 439e54295ff161a8c1204239042d8c19f901b96068bc6604e6fb76e040d50642
[INFO] running `"docker" "start" "-a" "439e54295ff161a8c1204239042d8c19f901b96068bc6604e6fb76e040d50642"`
[INFO] [stderr]     Checking deflate v0.7.16
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking png v0.9.0
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.15.0
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/main.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 center_x: center_x,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: replace it with: `center_x`
[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/main.rs:31:17
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 center_y: center_y,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: replace it with: `center_y`
[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/main.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 zoom: zoom,
[INFO] [stderr]    |                 ^^^^^^^^^^ help: replace it with: `zoom`
[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/main.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 center_x: center_x,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: replace it with: `center_x`
[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/main.rs:31:17
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 center_y: center_y,
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: replace it with: `center_y`
[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/main.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 zoom: zoom,
[INFO] [stderr]    |                 ^^^^^^^^^^ help: replace it with: `zoom`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:67:21
[INFO] [stderr]    |
[INFO] [stderr] 67 |         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: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ref mut fout = File::create(&Path::new("fractal.png")).unwrap();
[INFO] [stderr]    |     ----^^^^^^^^^^^^---------------------------------------------------- help: try: `let fout = &mut File::create(&Path::new("fractal.png")).unwrap();`
[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: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:67:21
[INFO] [stderr]    |
[INFO] [stderr] 67 |         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: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/main.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let ref mut fout = File::create(&Path::new("fractal.png")).unwrap();
[INFO] [stderr]    |     ----^^^^^^^^^^^^---------------------------------------------------- help: try: `let fout = &mut File::create(&Path::new("fractal.png")).unwrap();`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 14.61s
[INFO] running `"docker" "inspect" "439e54295ff161a8c1204239042d8c19f901b96068bc6604e6fb76e040d50642"`
[INFO] running `"docker" "rm" "-f" "439e54295ff161a8c1204239042d8c19f901b96068bc6604e6fb76e040d50642"`
[INFO] [stdout] 439e54295ff161a8c1204239042d8c19f901b96068bc6604e6fb76e040d50642