[INFO] updating cached repository bddap/anagram-solver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bddap/anagram-solver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bddap/anagram-solver" "work/ex/clippy-test-run/sources/stable/gh/bddap/anagram-solver"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/bddap/anagram-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bddap/anagram-solver" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bddap/anagram-solver"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bddap/anagram-solver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b3c84d24a08eae564d9d4a0bc73504c5d407ba36
[INFO] sha for GitHub repo bddap/anagram-solver: b3c84d24a08eae564d9d4a0bc73504c5d407ba36
[INFO] validating manifest of bddap/anagram-solver 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 bddap/anagram-solver 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 bddap/anagram-solver
[INFO] finished frobbing bddap/anagram-solver
[INFO] frobbed toml for bddap/anagram-solver written to work/ex/clippy-test-run/sources/stable/gh/bddap/anagram-solver/Cargo.toml
[INFO] started frobbing bddap/anagram-solver
[INFO] finished frobbing bddap/anagram-solver
[INFO] frobbed toml for bddap/anagram-solver written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bddap/anagram-solver/Cargo.toml
[INFO] crate bddap/anagram-solver 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 bddap/anagram-solver against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/bddap/anagram-solver:/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] beb1bff1832f5fc624356118d8e6a139243c5d1def99bc84257f9d506d99566b
[INFO] running `"docker" "start" "-a" "beb1bff1832f5fc624356118d8e6a139243c5d1def99bc84257f9d506d99566b"`
[INFO] [stderr]    Compiling enum-map-derive v0.4.0
[INFO] [stderr]     Checking enum-map v0.4.1
[INFO] [stderr]     Checking anagram-solver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/solver.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn from_byte(cha: &u8) -> Option<Letter> {
[INFO] [stderr]    |                           ^^^ help: consider passing by value instead: `u8`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/solver.rs:158:18
[INFO] [stderr]     |
[INFO] [stderr] 158 |             .map(|word| CountedWord::from_word(word))
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `CountedWord::from_word`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]    --> src/solver.rs:184:13
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub fn find<'a>(wl: &WordList, target: LetterCounts) -> Option<Vec<Vec<Letter>>> {
[INFO] [stderr]     |             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/solver.rs:211:9
[INFO] [stderr]     |
[INFO] [stderr] 211 | /         match target.checked_sub(&word.counts) {
[INFO] [stderr] 212 | |             Some(new_target) => match _find(wl, letter, new_target) {
[INFO] [stderr] 213 | |                 Some(mut vec) => {
[INFO] [stderr] 214 | |                     vec.push(word);
[INFO] [stderr] ...   |
[INFO] [stderr] 219 | |             None => {}
[INFO] [stderr] 220 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 211 |         if let Some(new_target) = target.checked_sub(&word.counts) { match _find(wl, letter, new_target) {
[INFO] [stderr] 212 |     Some(mut vec) => {
[INFO] [stderr] 213 |         vec.push(word);
[INFO] [stderr] 214 |         return Some(vec);
[INFO] [stderr] 215 |     }
[INFO] [stderr] 216 |     None => {}
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/solver.rs:212:33
[INFO] [stderr]     |
[INFO] [stderr] 212 |               Some(new_target) => match _find(wl, letter, new_target) {
[INFO] [stderr]     |  _________________________________^
[INFO] [stderr] 213 | |                 Some(mut vec) => {
[INFO] [stderr] 214 | |                     vec.push(word);
[INFO] [stderr] 215 | |                     return Some(vec);
[INFO] [stderr] 216 | |                 }
[INFO] [stderr] 217 | |                 None => {}
[INFO] [stderr] 218 | |             },
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 212 |             Some(new_target) => if let Some(mut vec) = _find(wl, letter, new_target) {
[INFO] [stderr] 213 |     vec.push(word);
[INFO] [stderr] 214 |     return Some(vec);
[INFO] [stderr] 215 | },
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/solver.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn from_byte(cha: &u8) -> Option<Letter> {
[INFO] [stderr]    |                           ^^^ help: consider passing by value instead: `u8`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]    --> src/solver.rs:158:18
[INFO] [stderr]     |
[INFO] [stderr] 158 |             .map(|word| CountedWord::from_word(word))
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `CountedWord::from_word`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]    --> src/solver.rs:184:13
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub fn find<'a>(wl: &WordList, target: LetterCounts) -> Option<Vec<Vec<Letter>>> {
[INFO] [stderr]     |             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/solver.rs:211:9
[INFO] [stderr]     |
[INFO] [stderr] 211 | /         match target.checked_sub(&word.counts) {
[INFO] [stderr] 212 | |             Some(new_target) => match _find(wl, letter, new_target) {
[INFO] [stderr] 213 | |                 Some(mut vec) => {
[INFO] [stderr] 214 | |                     vec.push(word);
[INFO] [stderr] ...   |
[INFO] [stderr] 219 | |             None => {}
[INFO] [stderr] 220 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 211 |         if let Some(new_target) = target.checked_sub(&word.counts) { match _find(wl, letter, new_target) {
[INFO] [stderr] 212 |     Some(mut vec) => {
[INFO] [stderr] 213 |         vec.push(word);
[INFO] [stderr] 214 |         return Some(vec);
[INFO] [stderr] 215 |     }
[INFO] [stderr] 216 |     None => {}
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/solver.rs:212:33
[INFO] [stderr]     |
[INFO] [stderr] 212 |               Some(new_target) => match _find(wl, letter, new_target) {
[INFO] [stderr]     |  _________________________________^
[INFO] [stderr] 213 | |                 Some(mut vec) => {
[INFO] [stderr] 214 | |                     vec.push(word);
[INFO] [stderr] 215 | |                     return Some(vec);
[INFO] [stderr] 216 | |                 }
[INFO] [stderr] 217 | |                 None => {}
[INFO] [stderr] 218 | |             },
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 212 |             Some(new_target) => if let Some(mut vec) = _find(wl, letter, new_target) {
[INFO] [stderr] 213 |     vec.push(word);
[INFO] [stderr] 214 |     return Some(vec);
[INFO] [stderr] 215 | },
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `"docker" "inspect" "beb1bff1832f5fc624356118d8e6a139243c5d1def99bc84257f9d506d99566b"`
[INFO] running `"docker" "rm" "-f" "beb1bff1832f5fc624356118d8e6a139243c5d1def99bc84257f9d506d99566b"`
[INFO] [stdout] beb1bff1832f5fc624356118d8e6a139243c5d1def99bc84257f9d506d99566b