[INFO] updating cached repository weclaw1/deterministic_finite_automaton
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/weclaw1/deterministic_finite_automaton
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/weclaw1/deterministic_finite_automaton" "work/ex/clippy-test-run/sources/stable/gh/weclaw1/deterministic_finite_automaton"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/weclaw1/deterministic_finite_automaton'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/weclaw1/deterministic_finite_automaton" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/weclaw1/deterministic_finite_automaton"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/weclaw1/deterministic_finite_automaton'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c351231cfe892df1b44c004af330eb676056e581
[INFO] sha for GitHub repo weclaw1/deterministic_finite_automaton: c351231cfe892df1b44c004af330eb676056e581
[INFO] validating manifest of weclaw1/deterministic_finite_automaton 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 weclaw1/deterministic_finite_automaton 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 weclaw1/deterministic_finite_automaton
[INFO] finished frobbing weclaw1/deterministic_finite_automaton
[INFO] frobbed toml for weclaw1/deterministic_finite_automaton written to work/ex/clippy-test-run/sources/stable/gh/weclaw1/deterministic_finite_automaton/Cargo.toml
[INFO] started frobbing weclaw1/deterministic_finite_automaton
[INFO] finished frobbing weclaw1/deterministic_finite_automaton
[INFO] frobbed toml for weclaw1/deterministic_finite_automaton written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/weclaw1/deterministic_finite_automaton/Cargo.toml
[INFO] crate weclaw1/deterministic_finite_automaton 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 weclaw1/deterministic_finite_automaton 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/weclaw1/deterministic_finite_automaton:/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] 7cbb70cbccdb1e11b78f8ab8d14fbda480ec2448394f25a298206babebf20d92
[INFO] running `"docker" "start" "-a" "7cbb70cbccdb1e11b78f8ab8d14fbda480ec2448394f25a298206babebf20d92"`
[INFO] [stderr]     Checking serde v1.0.16
[INFO] [stderr]     Checking either v1.3.0
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]     Checking itertools v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.16
[INFO] [stderr]     Checking serde_json v1.0.4
[INFO] [stderr]     Checking deterministic_finite_automaton v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |         return current_state.clone();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `current_state.clone()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |         return current_state.clone();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `current_state.clone()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/lib.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |         if !(self.state_transitions.len() == self.alphabet.len() * self.states.len()) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.state_transitions.len() != self.alphabet.len() * self.states.len()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/lib.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |         if !(self.state_transitions.len() == self.alphabet.len() * self.states.len()) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.state_transitions.len() != self.alphabet.len() * self.states.len()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     match dfa.correct() {
[INFO] [stderr] 24 | |         true => {
[INFO] [stderr] 25 | |             let result = dfa.run("abab");
[INFO] [stderr] 26 | |             println!("{:?}", result);
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         false => println!("DFA is not correct"),
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] help: consider using an if/else expression
[INFO] [stderr]    |
[INFO] [stderr] 23 |     if dfa.correct() {
[INFO] [stderr] 24 |     let result = dfa.run("abab");
[INFO] [stderr] 25 |     println!("{:?}", result);
[INFO] [stderr] 26 |     if dfa.state_accepted(&result) {
[INFO] [stderr] 27 |         println!("State is accepted!");
[INFO] [stderr] 28 |     } else {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | /     match dfa.correct() {
[INFO] [stderr] 24 | |         true => {
[INFO] [stderr] 25 | |             let result = dfa.run("abab");
[INFO] [stderr] 26 | |             println!("{:?}", result);
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         false => println!("DFA is not correct"),
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] help: consider using an if/else expression
[INFO] [stderr]    |
[INFO] [stderr] 23 |     if dfa.correct() {
[INFO] [stderr] 24 |     let result = dfa.run("abab");
[INFO] [stderr] 25 |     println!("{:?}", result);
[INFO] [stderr] 26 |     if dfa.state_accepted(&result) {
[INFO] [stderr] 27 |         println!("State is accepted!");
[INFO] [stderr] 28 |     } else {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.00s
[INFO] running `"docker" "inspect" "7cbb70cbccdb1e11b78f8ab8d14fbda480ec2448394f25a298206babebf20d92"`
[INFO] running `"docker" "rm" "-f" "7cbb70cbccdb1e11b78f8ab8d14fbda480ec2448394f25a298206babebf20d92"`
[INFO] [stdout] 7cbb70cbccdb1e11b78f8ab8d14fbda480ec2448394f25a298206babebf20d92