[INFO] updating cached repository sn99/mandelbrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sn99/mandelbrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sn99/mandelbrot" "work/ex/clippy-test-run/sources/stable/gh/sn99/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/sn99/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sn99/mandelbrot" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sn99/mandelbrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sn99/mandelbrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c19d087fa16782d7d34165b15abafd07ecb18459
[INFO] sha for GitHub repo sn99/mandelbrot: c19d087fa16782d7d34165b15abafd07ecb18459
[INFO] validating manifest of sn99/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 sn99/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 sn99/mandelbrot
[INFO] finished frobbing sn99/mandelbrot
[INFO] frobbed toml for sn99/mandelbrot written to work/ex/clippy-test-run/sources/stable/gh/sn99/mandelbrot/Cargo.toml
[INFO] started frobbing sn99/mandelbrot
[INFO] finished frobbing sn99/mandelbrot
[INFO] frobbed toml for sn99/mandelbrot written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sn99/mandelbrot/Cargo.toml
[INFO] crate sn99/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 sn99/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/sn99/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] 9e759573c365baba15e3122660d77abd3fdf09e6d213d1803db34ce2736e1a4b
[INFO] running `"docker" "start" "-a" "9e759573c365baba15e3122660d77abd3fdf09e6d213d1803db34ce2736e1a4b"`
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.3
[INFO] [stderr]    Compiling syn v0.15.15
[INFO] [stderr]     Checking rand v0.6.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking parking_lot v0.7.0
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.4
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking image v0.20.1
[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:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 | /         writeln!(
[INFO] [stderr] 116 | |             std::io::stderr(),
[INFO] [stderr] 117 | |             "Usage: mandelbrot FILE PIXELS UPPERLEFT LOWERRIGHT"
[INFO] [stderr] 118 | |         ).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:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 | /         writeln!(
[INFO] [stderr] 120 | |             std::io::stderr(),
[INFO] [stderr] 121 | |             "Example: {} mandel.png 1000x750 -1.20,0.35 -1,0.20",
[INFO] [stderr] 122 | |             args[0]
[INFO] [stderr] 123 | |         ).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: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 | /         crossbeam::scope(|spawner| {
[INFO] [stderr] 142 | |             for (i, band) in bands.into_iter().enumerate() {
[INFO] [stderr] 143 | |                 let top = rows_per_band * i;
[INFO] [stderr] 144 | |                 let height = band.len() / bounds.0;
[INFO] [stderr] ...   |
[INFO] [stderr] 153 | |             }
[INFO] [stderr] 154 | |         });
[INFO] [stderr]     | |___________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]    --> src/main.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 | /         writeln!(
[INFO] [stderr] 116 | |             std::io::stderr(),
[INFO] [stderr] 117 | |             "Usage: mandelbrot FILE PIXELS UPPERLEFT LOWERRIGHT"
[INFO] [stderr] 118 | |         ).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:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 | /         writeln!(
[INFO] [stderr] 120 | |             std::io::stderr(),
[INFO] [stderr] 121 | |             "Example: {} mandel.png 1000x750 -1.20,0.35 -1,0.20",
[INFO] [stderr] 122 | |             args[0]
[INFO] [stderr] 123 | |         ).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: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 | /         crossbeam::scope(|spawner| {
[INFO] [stderr] 142 | |             for (i, band) in bands.into_iter().enumerate() {
[INFO] [stderr] 143 | |                 let top = rows_per_band * i;
[INFO] [stderr] 144 | |                 let height = band.len() / bounds.0;
[INFO] [stderr] ...   |
[INFO] [stderr] 153 | |             }
[INFO] [stderr] 154 | |         });
[INFO] [stderr]     | |___________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.14s
[INFO] running `"docker" "inspect" "9e759573c365baba15e3122660d77abd3fdf09e6d213d1803db34ce2736e1a4b"`
[INFO] running `"docker" "rm" "-f" "9e759573c365baba15e3122660d77abd3fdf09e6d213d1803db34ce2736e1a4b"`
[INFO] [stdout] 9e759573c365baba15e3122660d77abd3fdf09e6d213d1803db34ce2736e1a4b