[INFO] updating cached repository ahmedalkabir/Mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ahmedalkabir/Mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ahmedalkabir/Mandelbrot" "work/ex/clippy-test-run/sources/stable/gh/ahmedalkabir/Mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ahmedalkabir/Mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ahmedalkabir/Mandelbrot" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ahmedalkabir/Mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ahmedalkabir/Mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 76e1728a352fafe6078c16e952aac0609753062b
[INFO] sha for GitHub repo ahmedalkabir/Mandelbrot: 76e1728a352fafe6078c16e952aac0609753062b
[INFO] validating manifest of ahmedalkabir/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 ahmedalkabir/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 ahmedalkabir/Mandelbrot
[INFO] finished frobbing ahmedalkabir/Mandelbrot
[INFO] frobbed toml for ahmedalkabir/Mandelbrot written to work/ex/clippy-test-run/sources/stable/gh/ahmedalkabir/Mandelbrot/Cargo.toml
[INFO] started frobbing ahmedalkabir/Mandelbrot
[INFO] finished frobbing ahmedalkabir/Mandelbrot
[INFO] frobbed toml for ahmedalkabir/Mandelbrot written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ahmedalkabir/Mandelbrot/Cargo.toml
[INFO] crate ahmedalkabir/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 ahmedalkabir/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/ahmedalkabir/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] b2afce4a568a7d0bbaacdaa087d3d575e8f6dc347b15908daa0c4d6eab5bc150
[INFO] running `"docker" "start" "-a" "b2afce4a568a7d0bbaacdaa087d3d575e8f6dc347b15908daa0c4d6eab5bc150"`
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.13.0
[INFO] [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]    --> src/main.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         writeln!(std::io::stderr(), 
[INFO] [stderr] 137 | |         "Usage: mangelbrot FILE PIXELS UPPERLEFT LOWERRIGHT").unwrap();
[INFO] [stderr]     | |______________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_write)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]    --> src/main.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 | /         writeln!(std::io::stderr(), 
[INFO] [stderr] 139 | |         "Example: {} mandel.png 1000x750 -1.20,0.35 -1,0.20",
[INFO] [stderr] 140 | |         args[0]).unwrap();
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]    --> src/main.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         writeln!(std::io::stderr(), 
[INFO] [stderr] 137 | |         "Usage: mangelbrot FILE PIXELS UPPERLEFT LOWERRIGHT").unwrap();
[INFO] [stderr]     | |______________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_write)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]    --> src/main.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 | /         writeln!(std::io::stderr(), 
[INFO] [stderr] 139 | |         "Example: {} mandel.png 1000x750 -1.20,0.35 -1,0.20",
[INFO] [stderr] 140 | |         args[0]).unwrap();
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.10s
[INFO] running `"docker" "inspect" "b2afce4a568a7d0bbaacdaa087d3d575e8f6dc347b15908daa0c4d6eab5bc150"`
[INFO] running `"docker" "rm" "-f" "b2afce4a568a7d0bbaacdaa087d3d575e8f6dc347b15908daa0c4d6eab5bc150"`
[INFO] [stdout] b2afce4a568a7d0bbaacdaa087d3d575e8f6dc347b15908daa0c4d6eab5bc150