[INFO] crate slice 0.0.4 is already in cache
[INFO] extracting crate slice 0.0.4 into work/ex/clippy-test-run/sources/stable/reg/slice/0.0.4
[INFO] extracting crate slice 0.0.4 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/slice/0.0.4
[INFO] validating manifest of slice-0.0.4 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 slice-0.0.4 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 slice-0.0.4
[INFO] finished frobbing slice-0.0.4
[INFO] frobbed toml for slice-0.0.4 written to work/ex/clippy-test-run/sources/stable/reg/slice/0.0.4/Cargo.toml
[INFO] started frobbing slice-0.0.4
[INFO] finished frobbing slice-0.0.4
[INFO] frobbed toml for slice-0.0.4 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/slice/0.0.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 slice-0.0.4 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/reg/slice/0.0.4:/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] 984590b6a95c7ad1629b869d106c3bc2de402978d7b037793d8f4f8c2f526563
[INFO] running `"docker" "start" "-a" "984590b6a95c7ad1629b869d106c3bc2de402978d7b037793d8f4f8c2f526563"`
[INFO] [stderr]     Checking slice v0.0.4 (/opt/crater/workdir)
[INFO] [stderr] warning: item `IoSlice<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/lib.rs:95:1
[INFO] [stderr]     |
[INFO] [stderr] 95  | / impl<T> IoSlice<T> where T: Seek {
[INFO] [stderr] 96  | |     /// create a new slice into a specific subset of `source`.
[INFO] [stderr] 97  | |     pub fn new(mut source: T, begin: u64, length: u64) -> Result<IoSlice<T>, std::io::Error> {
[INFO] [stderr] 98  | |         // :: check invariants
[INFO] [stderr] ...   |
[INFO] [stderr] 133 | |     }
[INFO] [stderr] 134 | | }
[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 `IoSlice<T>` has a public `len` method but no corresponding `is_empty` method
[INFO] [stderr]    --> src/lib.rs:95:1
[INFO] [stderr]     |
[INFO] [stderr] 95  | / impl<T> IoSlice<T> where T: Seek {
[INFO] [stderr] 96  | |     /// create a new slice into a specific subset of `source`.
[INFO] [stderr] 97  | |     pub fn new(mut source: T, begin: u64, length: u64) -> Result<IoSlice<T>, std::io::Error> {
[INFO] [stderr] 98  | |         // :: check invariants
[INFO] [stderr] ...   |
[INFO] [stderr] 133 | |     }
[INFO] [stderr] 134 | | }
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "984590b6a95c7ad1629b869d106c3bc2de402978d7b037793d8f4f8c2f526563"`
[INFO] running `"docker" "rm" "-f" "984590b6a95c7ad1629b869d106c3bc2de402978d7b037793d8f4f8c2f526563"`
[INFO] [stdout] 984590b6a95c7ad1629b869d106c3bc2de402978d7b037793d8f4f8c2f526563