[INFO] crate grabbag 0.1.2 is already in cache
[INFO] extracting crate grabbag 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/grabbag/0.1.2
[INFO] extracting crate grabbag 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/grabbag/0.1.2
[INFO] validating manifest of grabbag-0.1.2 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 grabbag-0.1.2 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 grabbag-0.1.2
[INFO] removed path dependency grabbag_macros from grabbag-0.1.2
[INFO] finished frobbing grabbag-0.1.2
[INFO] frobbed toml for grabbag-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/grabbag/0.1.2/Cargo.toml
[INFO] started frobbing grabbag-0.1.2
[INFO] removed path dependency grabbag_macros from grabbag-0.1.2
[INFO] finished frobbing grabbag-0.1.2
[INFO] frobbed toml for grabbag-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/grabbag/0.1.2/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 grabbag-0.1.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/grabbag/0.1.2:/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] a035fc29bd76a25b71363655659b4d1fe91a4ccef9b8473da51b9e5489bdd223
[INFO] running `"docker" "start" "-a" "a035fc29bd76a25b71363655659b4d1fe91a4ccef9b8473da51b9e5489bdd223"`
[INFO] [stderr]    Compiling grabbag_macros v0.1.2
[INFO] [stderr]     Checking grabbag v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/accumulate.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |             f: f,
[INFO] [stderr]    |             ^^^^ help: replace it with: `f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/group_by.rs:43:17
[INFO] [stderr]    |
[INFO] [stderr] 43 |                 group: group,
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: replace it with: `group`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/intersperse.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |             look_ahead: look_ahead,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `look_ahead`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/intersperse.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             inject: inject,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `inject`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/pad_tail_to.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             filler: filler,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `filler`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/zip_longest.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             right: right,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `right`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/accumulate.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |             f: f,
[INFO] [stderr]    |             ^^^^ help: replace it with: `f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/group_by.rs:43:17
[INFO] [stderr]    |
[INFO] [stderr] 43 |                 group: group,
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: replace it with: `group`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/intersperse.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |             look_ahead: look_ahead,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `look_ahead`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/intersperse.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             inject: inject,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `inject`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/pad_tail_to.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             filler: filler,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `filler`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/iter/zip_longest.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             right: right,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `right`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/accumulate.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/iter/cartesian_product.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 | /         let combine_bounds: fn(usize, usize, usize) -> usize;
[INFO] [stderr] 89 | | 
[INFO] [stderr] 90 | |         if self.left_value.is_some() {
[INFO] [stderr] 91 | |             combine_bounds = combine_bounds_with_partial;
[INFO] [stderr] 92 | |         } else {
[INFO] [stderr] 93 | |             combine_bounds = combine_bounds_without_partial;
[INFO] [stderr] 94 | |         }
[INFO] [stderr]    | |_________^ help: it is more idiomatic to write: `let combine_bounds = if self.left_value.is_some() { combine_bounds_with_partial } else { combine_bounds_without_partial };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/iter/clone_each.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         self.iter.next_back().map(|e| e.clone())
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `self.iter.next_back().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]    --> src/iter/group_by.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 | /         match g == self.group_value {
[INFO] [stderr] 163 | |             true => {
[INFO] [stderr] 164 | |                 // Still in the same group.
[INFO] [stderr] 165 | |                 Some(e)
[INFO] [stderr] ...   |
[INFO] [stderr] 171 | |             }
[INFO] [stderr] 172 | |         }
[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] 162 |         if g == self.group_value {
[INFO] [stderr] 163 |     // Still in the same group.
[INFO] [stderr] 164 |     Some(e)
[INFO] [stderr] 165 | } else {
[INFO] [stderr] 166 |     // Different group!  We need to push (g, e) back into the master iterator.
[INFO] [stderr] 167 |     state.push_back = Some((g, e));
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/iter/intersperse.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         match self.next_is_inject {
[INFO] [stderr] 50 | |             false => match replace(&mut self.look_ahead, None) {
[INFO] [stderr] 51 | |                 None => None,
[INFO] [stderr] 52 | |                 Some(e) => {
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |             }
[INFO] [stderr] 67 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[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] 49 |         if self.next_is_inject { match self.look_ahead.is_some() {
[INFO] [stderr] 50 |     true => {
[INFO] [stderr] 51 |         self.next_is_inject = false;
[INFO] [stderr] 52 |         Some(self.inject.clone())
[INFO] [stderr] 53 |     },
[INFO] [stderr] 54 |     false => {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/iter/intersperse.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |               true => match self.look_ahead.is_some() {
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 59 | |                 true => {
[INFO] [stderr] 60 | |                     self.next_is_inject = false;
[INFO] [stderr] 61 | |                     Some(self.inject.clone())
[INFO] [stderr] ...  |
[INFO] [stderr] 65 | |                 }
[INFO] [stderr] 66 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[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] 58 |             true => if self.look_ahead.is_some() {
[INFO] [stderr] 59 |     self.next_is_inject = false;
[INFO] [stderr] 60 |     Some(self.inject.clone())
[INFO] [stderr] 61 | } else {
[INFO] [stderr] 62 |     None
[INFO] [stderr] 63 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/pad_tail_to.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |             e @ _ => {
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/round_robin.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/round_robin.rs:77:17
[INFO] [stderr]    |
[INFO] [stderr] 77 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:118:17
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 e @ _ => e,
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:122:17
[INFO] [stderr]     |
[INFO] [stderr] 122 |                 e @ _ => e,
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:130:17
[INFO] [stderr]     |
[INFO] [stderr] 130 |                 e @ _ => {
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 e @ _ => {
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[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/iter/skip_exactly.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 | /             match self.next() {
[INFO] [stderr] 38 | |                 None => panic!("skip_exactly asked to skip {} elements, but only got {}", n, i),
[INFO] [stderr] 39 | |                 _ => ()
[INFO] [stderr] 40 | |             }
[INFO] [stderr]    | |_____________^ help: try this: `if let None = self.next() { panic!("skip_exactly asked to skip {} elements, but only got {}", n, i) }`
[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] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/iter/stride.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 | /             match self.iter.next() {
[INFO] [stderr] 56 | |                 None => break,
[INFO] [stderr] 57 | |                 _ => ()
[INFO] [stderr] 58 | |             }
[INFO] [stderr]    | |_____________^ help: try this: `if let None = self.iter.next() { break }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/take_exactly.rs:68:17
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/zip_longest.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |             e @ _ => Some(e)
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/accumulate.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/iter/cartesian_product.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 | /         let combine_bounds: fn(usize, usize, usize) -> usize;
[INFO] [stderr] 89 | | 
[INFO] [stderr] 90 | |         if self.left_value.is_some() {
[INFO] [stderr] 91 | |             combine_bounds = combine_bounds_with_partial;
[INFO] [stderr] 92 | |         } else {
[INFO] [stderr] 93 | |             combine_bounds = combine_bounds_without_partial;
[INFO] [stderr] 94 | |         }
[INFO] [stderr]    | |_________^ help: it is more idiomatic to write: `let combine_bounds = if self.left_value.is_some() { combine_bounds_with_partial } else { combine_bounds_without_partial };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/iter/clone_each.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         self.iter.next_back().map(|e| e.clone())
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `self.iter.next_back().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]    --> src/iter/group_by.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 | /         match g == self.group_value {
[INFO] [stderr] 163 | |             true => {
[INFO] [stderr] 164 | |                 // Still in the same group.
[INFO] [stderr] 165 | |                 Some(e)
[INFO] [stderr] ...   |
[INFO] [stderr] 171 | |             }
[INFO] [stderr] 172 | |         }
[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] 162 |         if g == self.group_value {
[INFO] [stderr] 163 |     // Still in the same group.
[INFO] [stderr] 164 |     Some(e)
[INFO] [stderr] 165 | } else {
[INFO] [stderr] 166 |     // Different group!  We need to push (g, e) back into the master iterator.
[INFO] [stderr] 167 |     state.push_back = Some((g, e));
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 32
[INFO] [stderr]    --> src/iter/group_by.rs:185:1
[INFO] [stderr]     |
[INFO] [stderr] 185 | / fn test_group_by() {
[INFO] [stderr] 186 | |     {
[INFO] [stderr] 187 | |         let v = vec![0usize, 1, 2, 3, 5, 4, 6, 8, 7];
[INFO] [stderr] 188 | |         let mut oi = v.into_iter().group_by(|&e| e & 1);
[INFO] [stderr] ...   |
[INFO] [stderr] 250 | |     }
[INFO] [stderr] 251 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/iter/intersperse.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         match self.next_is_inject {
[INFO] [stderr] 50 | |             false => match replace(&mut self.look_ahead, None) {
[INFO] [stderr] 51 | |                 None => None,
[INFO] [stderr] 52 | |                 Some(e) => {
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |             }
[INFO] [stderr] 67 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[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] 49 |         if self.next_is_inject { match self.look_ahead.is_some() {
[INFO] [stderr] 50 |     true => {
[INFO] [stderr] 51 |         self.next_is_inject = false;
[INFO] [stderr] 52 |         Some(self.inject.clone())
[INFO] [stderr] 53 |     },
[INFO] [stderr] 54 |     false => {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/iter/intersperse.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |               true => match self.look_ahead.is_some() {
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 59 | |                 true => {
[INFO] [stderr] 60 | |                     self.next_is_inject = false;
[INFO] [stderr] 61 | |                     Some(self.inject.clone())
[INFO] [stderr] ...  |
[INFO] [stderr] 65 | |                 }
[INFO] [stderr] 66 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[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] 58 |             true => if self.look_ahead.is_some() {
[INFO] [stderr] 59 |     self.next_is_inject = false;
[INFO] [stderr] 60 |     Some(self.inject.clone())
[INFO] [stderr] 61 | } else {
[INFO] [stderr] 62 |     None
[INFO] [stderr] 63 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/pad_tail_to.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |             e @ _ => {
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/round_robin.rs:70:17
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/round_robin.rs:77:17
[INFO] [stderr]    |
[INFO] [stderr] 77 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:118:17
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 e @ _ => e,
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:122:17
[INFO] [stderr]     |
[INFO] [stderr] 122 |                 e @ _ => e,
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:130:17
[INFO] [stderr]     |
[INFO] [stderr] 130 |                 e @ _ => {
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]    --> src/iter/round_robin.rs:141:17
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 e @ _ => {
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[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/iter/skip_exactly.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 | /             match self.next() {
[INFO] [stderr] 38 | |                 None => panic!("skip_exactly asked to skip {} elements, but only got {}", n, i),
[INFO] [stderr] 39 | |                 _ => ()
[INFO] [stderr] 40 | |             }
[INFO] [stderr]    | |_____________^ help: try this: `if let None = self.next() { panic!("skip_exactly asked to skip {} elements, but only got {}", n, i) }`
[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] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/iter/skip_exactly.rs:57:37
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let r = thread::spawn(move || { v.into_iter().skip_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: you are collect()ing an iterator and throwing away the result. Consider using an explicit for loop to exhaust the iterator
[INFO] [stderr]   --> src/iter/skip_exactly.rs:57:37
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let r = thread::spawn(move || { v.into_iter().skip_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_collect)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_collect
[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/iter/stride.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 | /             match self.iter.next() {
[INFO] [stderr] 56 | |                 None => break,
[INFO] [stderr] 57 | |                 _ => ()
[INFO] [stderr] 58 | |             }
[INFO] [stderr]    | |_____________^ help: try this: `if let None = self.iter.next() { break }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/take_exactly.rs:68:17
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 e @ _ => {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/iter/take_exactly.rs:90:37
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let r = thread::spawn(move || { v.into_iter().take_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: you are collect()ing an iterator and throwing away the result. Consider using an explicit for loop to exhaust the iterator
[INFO] [stderr]   --> src/iter/take_exactly.rs:90:37
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let r = thread::spawn(move || { v.into_iter().take_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_collect
[INFO] [stderr] 
[INFO] [stderr] warning: the `e @ _` pattern can be written as just `e`
[INFO] [stderr]   --> src/iter/zip_longest.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |             e @ _ => Some(e)
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `"docker" "inspect" "a035fc29bd76a25b71363655659b4d1fe91a4ccef9b8473da51b9e5489bdd223"`
[INFO] running `"docker" "rm" "-f" "a035fc29bd76a25b71363655659b4d1fe91a4ccef9b8473da51b9e5489bdd223"`
[INFO] [stdout] a035fc29bd76a25b71363655659b4d1fe91a4ccef9b8473da51b9e5489bdd223