[INFO] updating cached repository jDomantas/ripley
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jDomantas/ripley
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jDomantas/ripley" "work/ex/clippy-test-run/sources/stable/gh/jDomantas/ripley"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/jDomantas/ripley'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jDomantas/ripley" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jDomantas/ripley"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jDomantas/ripley'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 04cbf70f49a36ee5220a63f3f7c2fad6542fc3f2
[INFO] sha for GitHub repo jDomantas/ripley: 04cbf70f49a36ee5220a63f3f7c2fad6542fc3f2
[INFO] validating manifest of jDomantas/ripley 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 jDomantas/ripley 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 jDomantas/ripley
[INFO] finished frobbing jDomantas/ripley
[INFO] frobbed toml for jDomantas/ripley written to work/ex/clippy-test-run/sources/stable/gh/jDomantas/ripley/Cargo.toml
[INFO] started frobbing jDomantas/ripley
[INFO] finished frobbing jDomantas/ripley
[INFO] frobbed toml for jDomantas/ripley written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jDomantas/ripley/Cargo.toml
[INFO] crate jDomantas/ripley 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 jDomantas/ripley 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/jDomantas/ripley:/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] 22f7b4511260bc14b3578c0cbd6164656b02a93c9e241342ed3a16682f4088bd
[INFO] running `"docker" "start" "-a" "22f7b4511260bc14b3578c0cbd6164656b02a93c9e241342ed3a16682f4088bd"`
[INFO] [stderr]     Checking ripley v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/solver.rs:166:12
[INFO] [stderr]     |
[INFO] [stderr] 166 |         if tail.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tail.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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solver.rs:206:11
[INFO] [stderr]     |
[INFO] [stderr] 206 |     term: &Term<Var>,
[INFO] [stderr]     |           ^^^^^^^^^^ help: consider passing by value instead: `Term<Var>`
[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: length comparison to zero
[INFO] [stderr]    --> src/solver.rs:166:12
[INFO] [stderr]     |
[INFO] [stderr] 166 |         if tail.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `tail.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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solver.rs:206:11
[INFO] [stderr]     |
[INFO] [stderr] 206 |     term: &Term<Var>,
[INFO] [stderr]     |           ^^^^^^^^^^ help: consider passing by value instead: `Term<Var>`
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/terms.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |         if self.args.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.args.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/terms.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |         if self.tail.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.tail.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]     |
[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: length comparison to zero
[INFO] [stderr]   --> src/terms.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |         if self.args.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.args.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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/syntax/parser.rs:20:20
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn description(&self) -> &'static str {
[INFO] [stderr]    |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[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: length comparison to zero
[INFO] [stderr]   --> src/terms.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |         if self.tail.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.tail.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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/syntax/parser.rs:20:20
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn description(&self) -> &'static str {
[INFO] [stderr]    |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[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: length comparison to zero
[INFO] [stderr]   --> src/bin/ripley.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 |                 if solutions.len() == 0 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `solutions.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/bin/ripley.rs:29:28
[INFO] [stderr]    |
[INFO] [stderr] 29 |                         if solution.len() == 0 {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `solution.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/bin/tests.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |         if line.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.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/bin/tests.rs:68:21
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let answer = if answer.len() == 0 { "no" } else { &answer };
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `answer.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/bin/tests.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |         if ans.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ans.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/bin/tests.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |         if ans.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ans.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/bin/ripley.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 |                 if solutions.len() == 0 {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `solutions.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/bin/ripley.rs:29:28
[INFO] [stderr]    |
[INFO] [stderr] 29 |                         if solution.len() == 0 {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `solution.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/bin/tests.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |         if line.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.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/bin/tests.rs:68:21
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let answer = if answer.len() == 0 { "no" } else { &answer };
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `answer.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/bin/tests.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |         if ans.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ans.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/bin/tests.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |         if ans.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ans.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 3.17s
[INFO] running `"docker" "inspect" "22f7b4511260bc14b3578c0cbd6164656b02a93c9e241342ed3a16682f4088bd"`
[INFO] running `"docker" "rm" "-f" "22f7b4511260bc14b3578c0cbd6164656b02a93c9e241342ed3a16682f4088bd"`
[INFO] [stdout] 22f7b4511260bc14b3578c0cbd6164656b02a93c9e241342ed3a16682f4088bd