[INFO] updating cached repository pyk/rust-reader
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pyk/rust-reader
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pyk/rust-reader" "work/ex/clippy-test-run/sources/stable/gh/pyk/rust-reader"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/pyk/rust-reader'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pyk/rust-reader" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pyk/rust-reader"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pyk/rust-reader'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8d2964bae75b6b6538b9b36693a238f5a2ed1a7a
[INFO] sha for GitHub repo pyk/rust-reader: 8d2964bae75b6b6538b9b36693a238f5a2ed1a7a
[INFO] validating manifest of pyk/rust-reader 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 pyk/rust-reader 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 pyk/rust-reader
[INFO] finished frobbing pyk/rust-reader
[INFO] frobbed toml for pyk/rust-reader written to work/ex/clippy-test-run/sources/stable/gh/pyk/rust-reader/Cargo.toml
[INFO] started frobbing pyk/rust-reader
[INFO] finished frobbing pyk/rust-reader
[INFO] frobbed toml for pyk/rust-reader written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/pyk/rust-reader/Cargo.toml
[INFO] crate pyk/rust-reader 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 pyk/rust-reader against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/pyk/rust-reader:/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] eb61592a9266cf8fdb82372c85fe8419bfd310708521da088dcea98a4c8c62c7
[INFO] running `"docker" "start" "-a" "eb61592a9266cf8fdb82372c85fe8419bfd310708521da088dcea98a4c8c62c7"`
[INFO] [stderr]     Checking rust-reader v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/bin/buffer_token.rs:53:24
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     if bytes.len() == 0 { continue; };
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `bytes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/bin/buffer_token.rs:53:24
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     if bytes.len() == 0 { continue; };
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `bytes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `"docker" "inspect" "eb61592a9266cf8fdb82372c85fe8419bfd310708521da088dcea98a4c8c62c7"`
[INFO] running `"docker" "rm" "-f" "eb61592a9266cf8fdb82372c85fe8419bfd310708521da088dcea98a4c8c62c7"`
[INFO] [stdout] eb61592a9266cf8fdb82372c85fe8419bfd310708521da088dcea98a4c8c62c7