[INFO] updating cached repository howeih/Day-44-Gradient-Approximation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/howeih/Day-44-Gradient-Approximation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-44-Gradient-Approximation" "work/ex/clippy-test-run/sources/stable/gh/howeih/Day-44-Gradient-Approximation"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/howeih/Day-44-Gradient-Approximation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-44-Gradient-Approximation" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/howeih/Day-44-Gradient-Approximation"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/howeih/Day-44-Gradient-Approximation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2084d871af03aa6c7222140a786a5024c732aeea
[INFO] sha for GitHub repo howeih/Day-44-Gradient-Approximation: 2084d871af03aa6c7222140a786a5024c732aeea
[INFO] validating manifest of howeih/Day-44-Gradient-Approximation 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 howeih/Day-44-Gradient-Approximation 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 howeih/Day-44-Gradient-Approximation
[INFO] finished frobbing howeih/Day-44-Gradient-Approximation
[INFO] frobbed toml for howeih/Day-44-Gradient-Approximation written to work/ex/clippy-test-run/sources/stable/gh/howeih/Day-44-Gradient-Approximation/Cargo.toml
[INFO] started frobbing howeih/Day-44-Gradient-Approximation
[INFO] finished frobbing howeih/Day-44-Gradient-Approximation
[INFO] frobbed toml for howeih/Day-44-Gradient-Approximation written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/howeih/Day-44-Gradient-Approximation/Cargo.toml
[INFO] crate howeih/Day-44-Gradient-Approximation 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 howeih/Day-44-Gradient-Approximation against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/howeih/Day-44-Gradient-Approximation:/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] d2eeca113d49adc471db75cf75de301c75b05a21ee5e33889735b2f313567e58
[INFO] running `"docker" "start" "-a" "d2eeca113d49adc471db75cf75de301c75b05a21ee5e33889735b2f313567e58"`
[INFO] [stderr]    Compiling ndarray v0.11.2
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking gradient_approximation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: useless use of `vec!`
[INFO] [stderr]   --> src/main.rs:47:14
[INFO] [stderr]    |
[INFO] [stderr] 47 |     for x in vec![-1., 0., 1.] {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^ help: you can use a slice directly: `&[-1., 0., 1.]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_vec)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `vec!`
[INFO] [stderr]   --> src/main.rs:47:14
[INFO] [stderr]    |
[INFO] [stderr] 47 |     for x in vec![-1., 0., 1.] {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^ help: you can use a slice directly: `&[-1., 0., 1.]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_vec)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.54s
[INFO] running `"docker" "inspect" "d2eeca113d49adc471db75cf75de301c75b05a21ee5e33889735b2f313567e58"`
[INFO] running `"docker" "rm" "-f" "d2eeca113d49adc471db75cf75de301c75b05a21ee5e33889735b2f313567e58"`
[INFO] [stdout] d2eeca113d49adc471db75cf75de301c75b05a21ee5e33889735b2f313567e58