[INFO] updating cached repository kemingy/spelling_corrector
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kemingy/spelling_corrector
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kemingy/spelling_corrector" "work/ex/clippy-test-run/sources/stable/gh/kemingy/spelling_corrector"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/kemingy/spelling_corrector'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kemingy/spelling_corrector" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kemingy/spelling_corrector"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kemingy/spelling_corrector'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7a94b6456d16bea37cebc41f955e3c7faa1122a1
[INFO] sha for GitHub repo kemingy/spelling_corrector: 7a94b6456d16bea37cebc41f955e3c7faa1122a1
[INFO] validating manifest of kemingy/spelling_corrector 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 kemingy/spelling_corrector 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 kemingy/spelling_corrector
[INFO] finished frobbing kemingy/spelling_corrector
[INFO] frobbed toml for kemingy/spelling_corrector written to work/ex/clippy-test-run/sources/stable/gh/kemingy/spelling_corrector/Cargo.toml
[INFO] started frobbing kemingy/spelling_corrector
[INFO] finished frobbing kemingy/spelling_corrector
[INFO] frobbed toml for kemingy/spelling_corrector written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kemingy/spelling_corrector/Cargo.toml
[INFO] crate kemingy/spelling_corrector 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 kemingy/spelling_corrector against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/kemingy/spelling_corrector:/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] bb346994684fa9628f1c91996915e772427e3e59f3f85e0e280bf9f8e22024f1
[INFO] running `"docker" "start" "-a" "bb346994684fa9628f1c91996915e772427e3e59f3f85e0e280bf9f8e22024f1"`
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking regex v1.0.0
[INFO] [stderr]     Checking spelling_corrector v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 |     if known_words.len() > 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!known_words.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: an inclusive range would be more readable
[INFO] [stderr]   --> src/main.rs:85:18
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let splits = (0..word.len() + 1)
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^ help: use: `(0..=word.len())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:90:30
[INFO] [stderr]    |
[INFO] [stderr] 90 |         .filter(|(_, right)| right.len() > 0)
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!right.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/main.rs:101:36
[INFO] [stderr]     |
[INFO] [stderr] 101 |               .filter(|(_, right)| right.len() > 0)
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!right.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: an inclusive range would be more readable
[INFO] [stderr]    --> src/main.rs:102:64
[INFO] [stderr]     |
[INFO] [stderr] 102 |               .map(|(left, right)| left.to_string() + &letters[i..i+1] + &right[1..])
[INFO] [stderr]     |                                                                ^^^^^^ help: use: `i..=i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/main.rs:108:64
[INFO] [stderr]     |
[INFO] [stderr] 108 |               .map(|(left, right)| left.to_string() + &letters[i..i+1] + &right.to_string())
[INFO] [stderr]     |                                                                ^^^^^^ help: use: `i..=i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 |     if known_words.len() > 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!known_words.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: an inclusive range would be more readable
[INFO] [stderr]   --> src/main.rs:85:18
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let splits = (0..word.len() + 1)
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^ help: use: `(0..=word.len())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:90:30
[INFO] [stderr]    |
[INFO] [stderr] 90 |         .filter(|(_, right)| right.len() > 0)
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!right.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/main.rs:101:36
[INFO] [stderr]     |
[INFO] [stderr] 101 |               .filter(|(_, right)| right.len() > 0)
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!right.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: an inclusive range would be more readable
[INFO] [stderr]    --> src/main.rs:102:64
[INFO] [stderr]     |
[INFO] [stderr] 102 |               .map(|(left, right)| left.to_string() + &letters[i..i+1] + &right[1..])
[INFO] [stderr]     |                                                                ^^^^^^ help: use: `i..=i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/main.rs:108:64
[INFO] [stderr]     |
[INFO] [stderr] 108 |               .map(|(left, right)| left.to_string() + &letters[i..i+1] + &right.to_string())
[INFO] [stderr]     |                                                                ^^^^^^ help: use: `i..=i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.05s
[INFO] running `"docker" "inspect" "bb346994684fa9628f1c91996915e772427e3e59f3f85e0e280bf9f8e22024f1"`
[INFO] running `"docker" "rm" "-f" "bb346994684fa9628f1c91996915e772427e3e59f3f85e0e280bf9f8e22024f1"`
[INFO] [stdout] bb346994684fa9628f1c91996915e772427e3e59f3f85e0e280bf9f8e22024f1