[INFO] updating cached repository wraikny/playground_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wraikny/playground_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wraikny/playground_rs" "work/ex/clippy-test-run/sources/stable/gh/wraikny/playground_rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/wraikny/playground_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wraikny/playground_rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/wraikny/playground_rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/wraikny/playground_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1e85a142170a410b8e28be098dd252c89b87a161
[INFO] sha for GitHub repo wraikny/playground_rs: 1e85a142170a410b8e28be098dd252c89b87a161
[INFO] validating manifest of wraikny/playground_rs 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 wraikny/playground_rs 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 wraikny/playground_rs
[INFO] finished frobbing wraikny/playground_rs
[INFO] frobbed toml for wraikny/playground_rs written to work/ex/clippy-test-run/sources/stable/gh/wraikny/playground_rs/Cargo.toml
[INFO] started frobbing wraikny/playground_rs
[INFO] finished frobbing wraikny/playground_rs
[INFO] frobbed toml for wraikny/playground_rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/wraikny/playground_rs/Cargo.toml
[INFO] crate wraikny/playground_rs 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 wraikny/playground_rs against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/wraikny/playground_rs:/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 -Dclippy::into_iter_on_array" "-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] 2458e68f1de16a3fa47b4eb35499aa15533a3bb914378128085b5030f73357e5
[INFO] running `"docker" "start" "-a" "2458e68f1de16a3fa47b4eb35499aa15533a3bb914378128085b5030f73357e5"`
[INFO] [stderr]     Checking playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: item `vector::vec2::Vec2<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/vector/vec2.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / impl<T> Vec2<T> where T : Copy + Into<f64> + Add<Output = T> + Mul<Output = T> {
[INFO] [stderr] 17 | |     pub fn len(&self) -> f64 {
[INFO] [stderr] 18 | |         (self * self).into().sqrt()
[INFO] [stderr] 19 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |     }
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: item `vector::vec3::Vec3<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/vector/vec3.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | / impl<T> Vec3<T> where T : Copy + Into<f64> + Add<Output = T> + Mul<Output = T> {
[INFO] [stderr] 18 | |     pub fn len(&self) -> f64 {
[INFO] [stderr] 19 | |         (self * self).into().sqrt()
[INFO] [stderr] 20 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: item `vector::vec2::Vec2<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/vector/vec2.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / impl<T> Vec2<T> where T : Copy + Into<f64> + Add<Output = T> + Mul<Output = T> {
[INFO] [stderr] 17 | |     pub fn len(&self) -> f64 {
[INFO] [stderr] 18 | |         (self * self).into().sqrt()
[INFO] [stderr] 19 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |     }
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_without_is_empty)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr] warning: item `vector::vec3::Vec3<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]   --> src/vector/vec3.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | / impl<T> Vec3<T> where T : Copy + Into<f64> + Add<Output = T> + Mul<Output = T> {
[INFO] [stderr] 18 | |     pub fn len(&self) -> f64 {
[INFO] [stderr] 19 | |         (self * self).into().sqrt()
[INFO] [stderr] 20 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |     }
[INFO] [stderr] 25 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "2458e68f1de16a3fa47b4eb35499aa15533a3bb914378128085b5030f73357e5"`
[INFO] running `"docker" "rm" "-f" "2458e68f1de16a3fa47b4eb35499aa15533a3bb914378128085b5030f73357e5"`
[INFO] [stdout] 2458e68f1de16a3fa47b4eb35499aa15533a3bb914378128085b5030f73357e5