[INFO] crate rbtree 0.1.5 is already in cache
[INFO] extracting crate rbtree 0.1.5 into work/ex/clippy-test-run/sources/stable/reg/rbtree/0.1.5
[INFO] extracting crate rbtree 0.1.5 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rbtree/0.1.5
[INFO] validating manifest of rbtree-0.1.5 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 rbtree-0.1.5 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 rbtree-0.1.5
[INFO] finished frobbing rbtree-0.1.5
[INFO] frobbed toml for rbtree-0.1.5 written to work/ex/clippy-test-run/sources/stable/reg/rbtree/0.1.5/Cargo.toml
[INFO] started frobbing rbtree-0.1.5
[INFO] finished frobbing rbtree-0.1.5
[INFO] frobbed toml for rbtree-0.1.5 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rbtree/0.1.5/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 rbtree-0.1.5 against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rbtree/0.1.5:/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 -Dclippy::into_iter_on_array" "-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] 9fb82150c507af48bd7f4968683af1aa218000ae6fbf29eeccd317718e836540
[INFO] running `"docker" "start" "-a" "9fb82150c507af48bd7f4968683af1aa218000ae6fbf29eeccd317718e836540"`
[INFO] [stderr]     Checking rbtree v0.1.5 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         return temp;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[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:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |         return temp;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[INFO] [stderr]     |
[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:1076:13
[INFO] [stderr]      |
[INFO] [stderr] 1076 |             return temp;
[INFO] [stderr]      |             ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[INFO] [stderr]      |
[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:1089:13
[INFO] [stderr]      |
[INFO] [stderr] 1089 |             return temp;
[INFO] [stderr]      |             ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[INFO] [stderr]      |
[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:1359:9
[INFO] [stderr]      |
[INFO] [stderr] 1359 |         return obj.pair();
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `obj.pair()`
[INFO] [stderr]      |
[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 `else { if .. }` block can be collapsed
[INFO] [stderr]     --> src/lib.rs:1295:20
[INFO] [stderr]      |
[INFO] [stderr] 1295 |               } else {
[INFO] [stderr]      |  ____________________^
[INFO] [stderr] 1296 | |                 if node.parent().left() == node {
[INFO] [stderr] 1297 | |                     node.parent().set_left(replace);
[INFO] [stderr] 1298 | |                 } else {
[INFO] [stderr] 1299 | |                     node.parent().set_right(replace);
[INFO] [stderr] 1300 | |                 }
[INFO] [stderr] 1301 | |             }
[INFO] [stderr]      | |_____________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 1295 |             } else if node.parent().left() == node {
[INFO] [stderr] 1296 |     node.parent().set_left(replace);
[INFO] [stderr] 1297 | } else {
[INFO] [stderr] 1298 |     node.parent().set_right(replace);
[INFO] [stderr] 1299 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]     --> src/lib.rs:1346:16
[INFO] [stderr]      |
[INFO] [stderr] 1346 |           } else {
[INFO] [stderr]      |  ________________^
[INFO] [stderr] 1347 | |             if parent.left() == node {
[INFO] [stderr] 1348 | |                 parent.set_left(child);
[INFO] [stderr] 1349 | |             } else {
[INFO] [stderr] 1350 | |                 parent.set_right(child);
[INFO] [stderr] 1351 | |             }
[INFO] [stderr] 1352 | |         }
[INFO] [stderr]      | |_________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 1346 |         } else if parent.left() == node {
[INFO] [stderr] 1347 |     parent.set_left(child);
[INFO] [stderr] 1348 | } else {
[INFO] [stderr] 1349 |     parent.set_right(child);
[INFO] [stderr] 1350 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::RBTree`
[INFO] [stderr]     --> src/lib.rs:1404:9
[INFO] [stderr]      |
[INFO] [stderr] 1404 |     use super::RBTree;
[INFO] [stderr]      |         ^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         return temp;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[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:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |         return temp;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[INFO] [stderr]     |
[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:1076:13
[INFO] [stderr]      |
[INFO] [stderr] 1076 |             return temp;
[INFO] [stderr]      |             ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[INFO] [stderr]      |
[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:1089:13
[INFO] [stderr]      |
[INFO] [stderr] 1089 |             return temp;
[INFO] [stderr]      |             ^^^^^^^^^^^^ help: remove `return` as shown: `temp`
[INFO] [stderr]      |
[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:1359:9
[INFO] [stderr]      |
[INFO] [stderr] 1359 |         return obj.pair();
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `obj.pair()`
[INFO] [stderr]      |
[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 `else { if .. }` block can be collapsed
[INFO] [stderr]     --> src/lib.rs:1295:20
[INFO] [stderr]      |
[INFO] [stderr] 1295 |               } else {
[INFO] [stderr]      |  ____________________^
[INFO] [stderr] 1296 | |                 if node.parent().left() == node {
[INFO] [stderr] 1297 | |                     node.parent().set_left(replace);
[INFO] [stderr] 1298 | |                 } else {
[INFO] [stderr] 1299 | |                     node.parent().set_right(replace);
[INFO] [stderr] 1300 | |                 }
[INFO] [stderr] 1301 | |             }
[INFO] [stderr]      | |_____________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 1295 |             } else if node.parent().left() == node {
[INFO] [stderr] 1296 |     node.parent().set_left(replace);
[INFO] [stderr] 1297 | } else {
[INFO] [stderr] 1298 |     node.parent().set_right(replace);
[INFO] [stderr] 1299 | }
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]     --> src/lib.rs:1346:16
[INFO] [stderr]      |
[INFO] [stderr] 1346 |           } else {
[INFO] [stderr]      |  ________________^
[INFO] [stderr] 1347 | |             if parent.left() == node {
[INFO] [stderr] 1348 | |                 parent.set_left(child);
[INFO] [stderr] 1349 | |             } else {
[INFO] [stderr] 1350 | |                 parent.set_right(child);
[INFO] [stderr] 1351 | |             }
[INFO] [stderr] 1352 | |         }
[INFO] [stderr]      | |_________^
[INFO] [stderr]      |
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]      |
[INFO] [stderr] 1346 |         } else if parent.left() == node {
[INFO] [stderr] 1347 |     parent.set_left(child);
[INFO] [stderr] 1348 | } else {
[INFO] [stderr] 1349 |     parent.set_right(child);
[INFO] [stderr] 1350 | }
[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/lib.rs:117:18
[INFO] [stderr]     |
[INFO] [stderr] 117 |     fn get_color(&self) -> Color {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:125:21
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn is_red_color(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:133:23
[INFO] [stderr]     |
[INFO] [stderr] 133 |     fn is_black_color(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:141:22
[INFO] [stderr]     |
[INFO] [stderr] 141 |     fn is_left_child(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:146:23
[INFO] [stderr]     |
[INFO] [stderr] 146 |     fn is_right_child(&self) -> bool {
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:152:24
[INFO] [stderr]     |
[INFO] [stderr] 152 |         let mut temp = self.clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:161:24
[INFO] [stderr]     |
[INFO] [stderr] 161 |         let mut temp = self.clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:230:15
[INFO] [stderr]     |
[INFO] [stderr] 230 |     fn parent(&self) -> NodePtr<K, V> {
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:234:18
[INFO] [stderr]     |
[INFO] [stderr] 234 |         unsafe { (*self.0).parent.clone() }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `(*self.0).parent`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:238:13
[INFO] [stderr]     |
[INFO] [stderr] 238 |     fn left(&self) -> NodePtr<K, V> {
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:242:18
[INFO] [stderr]     |
[INFO] [stderr] 242 |         unsafe { (*self.0).left.clone() }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `(*self.0).left`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:246:14
[INFO] [stderr]     |
[INFO] [stderr] 246 |     fn right(&self) -> NodePtr<K, V> {
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:250:18
[INFO] [stderr]     |
[INFO] [stderr] 250 |         unsafe { (*self.0).right.clone() }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `(*self.0).right`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:259:16
[INFO] [stderr]     |
[INFO] [stderr] 259 |     fn is_null(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:265:26
[INFO] [stderr]     |
[INFO] [stderr] 265 |     unsafe fn deep_clone(&self) -> NodePtr<K, V> {
[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: you should consider adding a `Default` implementation for `RBTree<K, V>`
[INFO] [stderr]    --> src/lib.rs:829:5
[INFO] [stderr]     |
[INFO] [stderr] 829 | /     pub fn new() -> RBTree<K, V> {
[INFO] [stderr] 830 | |         RBTree {
[INFO] [stderr] 831 | |             root: NodePtr::null(),
[INFO] [stderr] 832 | |             len: 0,
[INFO] [stderr] 833 | |         }
[INFO] [stderr] 834 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 827 | impl Default for RBTree<K, V> {
[INFO] [stderr] 828 |     fn default() -> Self {
[INFO] [stderr] 829 |         Self::new()
[INFO] [stderr] 830 |     }
[INFO] [stderr] 831 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:868:36
[INFO] [stderr]     |
[INFO] [stderr] 868 |             temp.left().set_parent(node.clone());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:873:25
[INFO] [stderr]     |
[INFO] [stderr] 873 |             self.root = temp.clone();
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:875:36
[INFO] [stderr]     |
[INFO] [stderr] 875 |             node.parent().set_left(temp.clone());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:877:37
[INFO] [stderr]     |
[INFO] [stderr] 877 |             node.parent().set_right(temp.clone());
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:880:23
[INFO] [stderr]     |
[INFO] [stderr] 880 |         temp.set_left(node.clone());
[INFO] [stderr]     |                       ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:881:25
[INFO] [stderr]     |
[INFO] [stderr] 881 |         node.set_parent(temp.clone());
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:903:37
[INFO] [stderr]     |
[INFO] [stderr] 903 |             temp.right().set_parent(node.clone());
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:908:25
[INFO] [stderr]     |
[INFO] [stderr] 908 |             self.root = temp.clone();
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:910:37
[INFO] [stderr]     |
[INFO] [stderr] 910 |             node.parent().set_right(temp.clone());
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:912:36
[INFO] [stderr]     |
[INFO] [stderr] 912 |             node.parent().set_left(temp.clone());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:915:24
[INFO] [stderr]     |
[INFO] [stderr] 915 |         temp.set_right(node.clone());
[INFO] [stderr]     |                        ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:916:25
[INFO] [stderr]     |
[INFO] [stderr] 916 |         node.set_parent(temp.clone());
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this looks like you are swapping `parent` and `node` manually
[INFO] [stderr]    --> src/lib.rs:969:21
[INFO] [stderr]     |
[INFO] [stderr] 969 | /                     let temp = parent;
[INFO] [stderr] 970 | |                     parent = node;
[INFO] [stderr] 971 | |                     node = temp;
[INFO] [stderr]     | |_______________________________^ help: try: `std::mem::swap(&mut parent, &mut node)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::manual_swap)] on by default
[INFO] [stderr]     = note: or maybe you should use `std::mem::replace`?
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: this looks like you are swapping `parent` and `node` manually
[INFO] [stderr]    --> src/lib.rs:992:21
[INFO] [stderr]     |
[INFO] [stderr] 992 | /                     let temp = parent;
[INFO] [stderr] 993 | |                     parent = node;
[INFO] [stderr] 994 | |                     node = temp;
[INFO] [stderr]     | |_______________________________^ help: try: `std::mem::swap(&mut parent, &mut node)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: or maybe you should use `std::mem::replace`?
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> examples/bench.rs:78:21
[INFO] [stderr]    |
[INFO] [stderr] 78 |     test_insert(10, 100000);
[INFO] [stderr]    |                     ^^^^^^ help: consider: `100_000`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> examples/bench.rs:79:21
[INFO] [stderr]    |
[INFO] [stderr] 79 |     test_insert(10, 1000000);
[INFO] [stderr]    |                     ^^^^^^^ help: consider: `1_000_000`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> examples/bench.rs:80:21
[INFO] [stderr]    |
[INFO] [stderr] 80 |     test_insert(10, 10000000);
[INFO] [stderr]    |                     ^^^^^^^^ help: consider: `10_000_000`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:117:18
[INFO] [stderr]     |
[INFO] [stderr] 117 |     fn get_color(&self) -> Color {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:125:21
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn is_red_color(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:133:23
[INFO] [stderr]     |
[INFO] [stderr] 133 |     fn is_black_color(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:141:22
[INFO] [stderr]     |
[INFO] [stderr] 141 |     fn is_left_child(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:146:23
[INFO] [stderr]     |
[INFO] [stderr] 146 |     fn is_right_child(&self) -> bool {
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:152:24
[INFO] [stderr]     |
[INFO] [stderr] 152 |         let mut temp = self.clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:161:24
[INFO] [stderr]     |
[INFO] [stderr] 161 |         let mut temp = self.clone();
[INFO] [stderr]     |                        ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:230:15
[INFO] [stderr]     |
[INFO] [stderr] 230 |     fn parent(&self) -> NodePtr<K, V> {
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:234:18
[INFO] [stderr]     |
[INFO] [stderr] 234 |         unsafe { (*self.0).parent.clone() }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `(*self.0).parent`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:238:13
[INFO] [stderr]     |
[INFO] [stderr] 238 |     fn left(&self) -> NodePtr<K, V> {
[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: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:242:18
[INFO] [stderr]     |
[INFO] [stderr] 242 |         unsafe { (*self.0).left.clone() }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `(*self.0).left`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:246:14
[INFO] [stderr]     |
[INFO] [stderr] 246 |     fn right(&self) -> NodePtr<K, V> {
[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: casting u32 to u64 may become silently lossy if types change
[INFO] [stderr]  --> examples/bench.rs:7:42
[INFO] [stderr]   |
[INFO] [stderr] 7 |     duration.as_secs() * 1_000_000_000 + duration.subsec_nanos() as u64
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u64::from(duration.subsec_nanos())`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:250:18
[INFO] [stderr]     |
[INFO] [stderr] 250 |         unsafe { (*self.0).right.clone() }
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `(*self.0).right`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:259:16
[INFO] [stderr]     |
[INFO] [stderr] 259 |     fn is_null(&self) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:265:26
[INFO] [stderr]     |
[INFO] [stderr] 265 |     unsafe fn deep_clone(&self) -> NodePtr<K, V> {
[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: you should consider adding a `Default` implementation for `RBTree<K, V>`
[INFO] [stderr]    --> src/lib.rs:829:5
[INFO] [stderr]     |
[INFO] [stderr] 829 | /     pub fn new() -> RBTree<K, V> {
[INFO] [stderr] 830 | |         RBTree {
[INFO] [stderr] 831 | |             root: NodePtr::null(),
[INFO] [stderr] 832 | |             len: 0,
[INFO] [stderr] 833 | |         }
[INFO] [stderr] 834 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 827 | impl Default for RBTree<K, V> {
[INFO] [stderr] 828 |     fn default() -> Self {
[INFO] [stderr] 829 |         Self::new()
[INFO] [stderr] 830 |     }
[INFO] [stderr] 831 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:868:36
[INFO] [stderr]     |
[INFO] [stderr] 868 |             temp.left().set_parent(node.clone());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:873:25
[INFO] [stderr]     |
[INFO] [stderr] 873 |             self.root = temp.clone();
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:875:36
[INFO] [stderr]     |
[INFO] [stderr] 875 |             node.parent().set_left(temp.clone());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:877:37
[INFO] [stderr]     |
[INFO] [stderr] 877 |             node.parent().set_right(temp.clone());
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:880:23
[INFO] [stderr]     |
[INFO] [stderr] 880 |         temp.set_left(node.clone());
[INFO] [stderr]     |                       ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:881:25
[INFO] [stderr]     |
[INFO] [stderr] 881 |         node.set_parent(temp.clone());
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:903:37
[INFO] [stderr]     |
[INFO] [stderr] 903 |             temp.right().set_parent(node.clone());
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:908:25
[INFO] [stderr]     |
[INFO] [stderr] 908 |             self.root = temp.clone();
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:910:37
[INFO] [stderr]     |
[INFO] [stderr] 910 |             node.parent().set_right(temp.clone());
[INFO] [stderr]     |                                     ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:912:36
[INFO] [stderr]     |
[INFO] [stderr] 912 |             node.parent().set_left(temp.clone());
[INFO] [stderr]     |                                    ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:915:24
[INFO] [stderr]     |
[INFO] [stderr] 915 |         temp.set_right(node.clone());
[INFO] [stderr]     |                        ^^^^^^^^^^^^ help: try removing the `clone` call: `node`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/lib.rs:916:25
[INFO] [stderr]     |
[INFO] [stderr] 916 |         node.set_parent(temp.clone());
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: try removing the `clone` call: `temp`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this looks like you are swapping `parent` and `node` manually
[INFO] [stderr]    --> src/lib.rs:969:21
[INFO] [stderr]     |
[INFO] [stderr] 969 | /                     let temp = parent;
[INFO] [stderr] 970 | |                     parent = node;
[INFO] [stderr] 971 | |                     node = temp;
[INFO] [stderr]     | |_______________________________^ help: try: `std::mem::swap(&mut parent, &mut node)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::manual_swap)] on by default
[INFO] [stderr]     = note: or maybe you should use `std::mem::replace`?
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: this looks like you are swapping `parent` and `node` manually
[INFO] [stderr]    --> src/lib.rs:992:21
[INFO] [stderr]     |
[INFO] [stderr] 992 | /                     let temp = parent;
[INFO] [stderr] 993 | |                     parent = node;
[INFO] [stderr] 994 | |                     node = temp;
[INFO] [stderr]     | |_______________________________^ help: try: `std::mem::swap(&mut parent, &mut node)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: or maybe you should use `std::mem::replace`?
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]     --> src/lib.rs:1476:26
[INFO] [stderr]      |
[INFO] [stderr] 1476 |                 for j in 1..i + 1 {
[INFO] [stderr]      |                          ^^^^^^^^ help: use: `1..=i`
[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: an inclusive range would be more readable
[INFO] [stderr]     --> src/lib.rs:1495:26
[INFO] [stderr]      |
[INFO] [stderr] 1495 |                 for j in 1..i + 1 {
[INFO] [stderr]      |                          ^^^^^^^^ help: use: `1..=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: manual implementation of an assign operation
[INFO] [stderr]     --> src/lib.rs:1626:13
[INFO] [stderr]      |
[INFO] [stderr] 1626 |             *value = (*value) * 2
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*value *= 2`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: statement can be reduced
[INFO] [stderr]     --> src/lib.rs:1761:9
[INFO] [stderr]      |
[INFO] [stderr] 1761 |         map[&4];
[INFO] [stderr]      |         ^^^^^^^^ help: replace it with: `map;&4;`
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::unnecessary_operation)] on by default
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_operation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "9fb82150c507af48bd7f4968683af1aa218000ae6fbf29eeccd317718e836540"`
[INFO] running `"docker" "rm" "-f" "9fb82150c507af48bd7f4968683af1aa218000ae6fbf29eeccd317718e836540"`
[INFO] [stdout] 9fb82150c507af48bd7f4968683af1aa218000ae6fbf29eeccd317718e836540