[INFO] updating cached repository kennerleyb/Rust-Mandlebrot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kennerleyb/Rust-Mandlebrot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kennerleyb/Rust-Mandlebrot" "work/ex/clippy-test-run/sources/stable/gh/kennerleyb/Rust-Mandlebrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/kennerleyb/Rust-Mandlebrot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kennerleyb/Rust-Mandlebrot" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kennerleyb/Rust-Mandlebrot"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kennerleyb/Rust-Mandlebrot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a58a1205306c7555a0811ab643bbe49044d3ddc1
[INFO] sha for GitHub repo kennerleyb/Rust-Mandlebrot: a58a1205306c7555a0811ab643bbe49044d3ddc1
[INFO] validating manifest of kennerleyb/Rust-Mandlebrot 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 kennerleyb/Rust-Mandlebrot 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 kennerleyb/Rust-Mandlebrot
[INFO] finished frobbing kennerleyb/Rust-Mandlebrot
[INFO] frobbed toml for kennerleyb/Rust-Mandlebrot written to work/ex/clippy-test-run/sources/stable/gh/kennerleyb/Rust-Mandlebrot/Cargo.toml
[INFO] started frobbing kennerleyb/Rust-Mandlebrot
[INFO] finished frobbing kennerleyb/Rust-Mandlebrot
[INFO] frobbed toml for kennerleyb/Rust-Mandlebrot written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kennerleyb/Rust-Mandlebrot/Cargo.toml
[INFO] crate kennerleyb/Rust-Mandlebrot 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 kennerleyb/Rust-Mandlebrot 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/kennerleyb/Rust-Mandlebrot:/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] fa167f6867127b17eb696365503443c9986af90abf5cca131fa4d41496a2b8f6
[INFO] running `"docker" "start" "-a" "fa167f6867127b17eb696365503443c9986af90abf5cca131fa4d41496a2b8f6"`
[INFO] [stderr]     Checking num_cpus v1.5.1
[INFO] [stderr]     Checking num-complex v0.1.38
[INFO] [stderr]     Checking num-rational v0.1.38
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking rayon v0.8.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]     Checking rust-mandlebrot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/main.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let ref mut fname = File::create(&Path::new("fractal.png")).unwrap();
[INFO] [stderr]    |     ----^^^^^^^^^^^^^---------------------------------------------------- help: try: `let fname = &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: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/main.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let ref mut fname = File::create(&Path::new("fractal.png")).unwrap();
[INFO] [stderr]    |     ----^^^^^^^^^^^^^---------------------------------------------------- help: try: `let fname = &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 14.30s
[INFO] running `"docker" "inspect" "fa167f6867127b17eb696365503443c9986af90abf5cca131fa4d41496a2b8f6"`
[INFO] running `"docker" "rm" "-f" "fa167f6867127b17eb696365503443c9986af90abf5cca131fa4d41496a2b8f6"`
[INFO] [stdout] fa167f6867127b17eb696365503443c9986af90abf5cca131fa4d41496a2b8f6