[INFO] crate iso3166-1 1.0.1 is already in cache
[INFO] extracting crate iso3166-1 1.0.1 into work/ex/clippy-test-run/sources/stable/reg/iso3166-1/1.0.1
[INFO] extracting crate iso3166-1 1.0.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/iso3166-1/1.0.1
[INFO] validating manifest of iso3166-1-1.0.1 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 iso3166-1-1.0.1 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 iso3166-1-1.0.1
[INFO] finished frobbing iso3166-1-1.0.1
[INFO] frobbed toml for iso3166-1-1.0.1 written to work/ex/clippy-test-run/sources/stable/reg/iso3166-1/1.0.1/Cargo.toml
[INFO] started frobbing iso3166-1-1.0.1
[INFO] finished frobbing iso3166-1-1.0.1
[INFO] frobbed toml for iso3166-1-1.0.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/iso3166-1/1.0.1/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 iso3166-1-1.0.1 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-3/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/iso3166-1/1.0.1:/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] 233c081ebcff74663a5b06e1aa66406e045dbea3ee8eccc176cdde1b26a8794f
[INFO] running `"docker" "start" "-a" "233c081ebcff74663a5b06e1aa66406e045dbea3ee8eccc176cdde1b26a8794f"`
[INFO] [stderr]     Checking iso3166-1 v1.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> tests/lib.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     assert!(all().len() > 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!all().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]   --> tests/lib.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |     assert!(num_range(Some("001"), Some("005")).len() > 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!num_range(Some("001"), Some("005")).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]   --> tests/lib.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |     assert!(num_range(Some("001"), Some("003")).len() == 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `num_range(Some("001"), Some("003")).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]   --> tests/lib.rs:94:13
[INFO] [stderr]    |
[INFO] [stderr] 94 |     assert!(num_range(None, Some("004")).len() > 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!num_range(None, Some("004")).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]   --> tests/lib.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |     assert!(num_range(None, Some("003")).len() == 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `num_range(None, Some("003")).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]   --> tests/lib.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |     assert!(num_range(Some("001"), None).len() > 0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!num_range(Some("001"), None).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]    --> tests/lib.rs:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |     assert!(num_range(Some("1000"), None).len() == 0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `num_range(Some("1000"), None).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]    --> tests/lib.rs:104:13
[INFO] [stderr]     |
[INFO] [stderr] 104 |     assert!(num_range(None, None).len() == 0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `num_range(None, None).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]    --> tests/lib.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |     assert!(all().len() != 0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!all().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]   --> examples/num_range.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |     assert!(countries4.len() == 0); // true
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `countries4.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 2.04s
[INFO] running `"docker" "inspect" "233c081ebcff74663a5b06e1aa66406e045dbea3ee8eccc176cdde1b26a8794f"`
[INFO] running `"docker" "rm" "-f" "233c081ebcff74663a5b06e1aa66406e045dbea3ee8eccc176cdde1b26a8794f"`
[INFO] [stdout] 233c081ebcff74663a5b06e1aa66406e045dbea3ee8eccc176cdde1b26a8794f