[INFO] updating cached repository kbacha/redis-like-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kbacha/redis-like-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kbacha/redis-like-rs" "work/ex/clippy-test-run/sources/stable/gh/kbacha/redis-like-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/kbacha/redis-like-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kbacha/redis-like-rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kbacha/redis-like-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kbacha/redis-like-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6ec0cc4337daa931067f7f9fc62c5ac1a5624434
[INFO] sha for GitHub repo kbacha/redis-like-rs: 6ec0cc4337daa931067f7f9fc62c5ac1a5624434
[INFO] validating manifest of kbacha/redis-like-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 kbacha/redis-like-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 kbacha/redis-like-rs
[INFO] finished frobbing kbacha/redis-like-rs
[INFO] frobbed toml for kbacha/redis-like-rs written to work/ex/clippy-test-run/sources/stable/gh/kbacha/redis-like-rs/Cargo.toml
[INFO] started frobbing kbacha/redis-like-rs
[INFO] finished frobbing kbacha/redis-like-rs
[INFO] frobbed toml for kbacha/redis-like-rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kbacha/redis-like-rs/Cargo.toml
[INFO] crate kbacha/redis-like-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 kbacha/redis-like-rs against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/kbacha/redis-like-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" "-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] 5e250fc425988ebff9048d92267f556594823470e7176dbd7709dc2de6ca3adc
[INFO] running `"docker" "start" "-a" "5e250fc425988ebff9048d92267f556594823470e7176dbd7709dc2de6ca3adc"`
[INFO] [stderr]     Checking tokio v0.1.1
[INFO] [stderr]     Checking redis-like-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/command.rs:25:31
[INFO] [stderr]    |
[INFO] [stderr] 25 |                     } else if bytes.len() == 0 {
[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/command.rs:35:28
[INFO] [stderr]    |
[INFO] [stderr] 35 |                         if key.len() == 0 {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `key.is_empty()`
[INFO] [stderr]    |
[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/command.rs:37:35
[INFO] [stderr]    |
[INFO] [stderr] 37 |                         } else if bytes.len() == 0 {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `bytes.is_empty()`
[INFO] [stderr]    |
[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/command.rs:25:31
[INFO] [stderr]    |
[INFO] [stderr] 25 |                     } else if bytes.len() == 0 {
[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/command.rs:35:28
[INFO] [stderr]    |
[INFO] [stderr] 35 |                         if key.len() == 0 {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `key.is_empty()`
[INFO] [stderr]    |
[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/command.rs:37:35
[INFO] [stderr]    |
[INFO] [stderr] 37 |                         } else if bytes.len() == 0 {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `bytes.is_empty()`
[INFO] [stderr]    |
[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 3.25s
[INFO] running `"docker" "inspect" "5e250fc425988ebff9048d92267f556594823470e7176dbd7709dc2de6ca3adc"`
[INFO] running `"docker" "rm" "-f" "5e250fc425988ebff9048d92267f556594823470e7176dbd7709dc2de6ca3adc"`
[INFO] [stdout] 5e250fc425988ebff9048d92267f556594823470e7176dbd7709dc2de6ca3adc