[INFO] crate vebtrees 0.1.3 is already in cache
[INFO] extracting crate vebtrees 0.1.3 into work/ex/clippy-test-run/sources/stable/reg/vebtrees/0.1.3
[INFO] extracting crate vebtrees 0.1.3 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/vebtrees/0.1.3
[INFO] validating manifest of vebtrees-0.1.3 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 vebtrees-0.1.3 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 vebtrees-0.1.3
[INFO] finished frobbing vebtrees-0.1.3
[INFO] frobbed toml for vebtrees-0.1.3 written to work/ex/clippy-test-run/sources/stable/reg/vebtrees/0.1.3/Cargo.toml
[INFO] started frobbing vebtrees-0.1.3
[INFO] finished frobbing vebtrees-0.1.3
[INFO] frobbed toml for vebtrees-0.1.3 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/vebtrees/0.1.3/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 vebtrees-0.1.3 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/vebtrees/0.1.3:/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] 6db634291c9e5c34089a971bb7cc403aa7d36b2d2cd65d71b65d13b521ec29d2
[INFO] running `"docker" "start" "-a" "6db634291c9e5c34089a971bb7cc403aa7d36b2d2cd65d71b65d13b521ec29d2"`
[INFO] [stderr]     Checking vebtrees v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Duration`, `Instant`
[INFO] [stderr]  --> src/tests.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Instant, Duration};
[INFO] [stderr]   |                 ^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]  --> src/test_asymptotes.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 |     for i in (0..num_runs) {
[INFO] [stderr]   |              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/test_asymptotes.rs:39:14
[INFO] [stderr]    |
[INFO] [stderr] 39 |     for i in (0..num_runs) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/test_asymptotes.rs:74:14
[INFO] [stderr]    |
[INFO] [stderr] 74 |     for i in (0..num_runs) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/test_asymptotes.rs:108:14
[INFO] [stderr]     |
[INFO] [stderr] 108 |     for i in (0..num_runs) {
[INFO] [stderr]     |              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/test_asymptotes.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 | /     return ((elapsed.as_secs() as f64)*1_000_000_000.0)
[INFO] [stderr] 145 | |         + ( elapsed.subsec_nanos() as f64);
[INFO] [stderr]     | |___________________________________________^
[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] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 144 |     ((elapsed.as_secs() as f64)*1_000_000_000.0)
[INFO] [stderr] 145 |         + ( elapsed.subsec_nanos() as f64)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/test_asymptotes.rs:182:5
[INFO] [stderr]     |
[INFO] [stderr] 182 |     return numerator/denominator;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `numerator/denominator`
[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:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         return tree
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `tree`
[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:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 |         return value / self.children.len();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `value / self.children.len()`
[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:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |         return value % self.children.len();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `value % self.children.len()`
[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:114:21
[INFO] [stderr]     |
[INFO] [stderr] 114 |                     return true;
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:119:33
[INFO] [stderr]     |
[INFO] [stderr] 119 |                                 return true;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:122:37
[INFO] [stderr]     |
[INFO] [stderr] 122 | /                                     return self
[INFO] [stderr] 123 | |                                         .children[self.high(value)]
[INFO] [stderr] 124 | |                                         .contains(self.low(value));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 122 |                                     self
[INFO] [stderr] 123 |                                         .children[self.high(value)]
[INFO] [stderr] 124 |                                         .contains(self.low(value))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:126:37
[INFO] [stderr]     |
[INFO] [stderr] 126 |                                     return false;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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:130:34
[INFO] [stderr]     |
[INFO] [stderr] 130 |                         None => {return false;}
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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:134:22
[INFO] [stderr]     |
[INFO] [stderr] 134 |             None => {return false;}
[INFO] [stderr]     |                      ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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:120:36
[INFO] [stderr]     |
[INFO] [stderr] 120 |                               } else {
[INFO] [stderr]     |  ____________________________________^
[INFO] [stderr] 121 | |                                 if self.children.len() > 0 {
[INFO] [stderr] 122 | |                                     return self
[INFO] [stderr] 123 | |                                         .children[self.high(value)]
[INFO] [stderr] ...   |
[INFO] [stderr] 127 | |                                 }
[INFO] [stderr] 128 | |                             }
[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] 120 |                             } else if self.children.len() > 0 {
[INFO] [stderr] 121 |     return self
[INFO] [stderr] 122 |         .children[self.high(value)]
[INFO] [stderr] 123 |         .contains(self.low(value));
[INFO] [stderr] 124 | } else {
[INFO] [stderr] 125 |     return false;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |             return None;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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:164:13
[INFO] [stderr]     |
[INFO] [stderr] 164 |             return Some(result+local_idx*self.children.len());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(result+local_idx*self.children.len())`
[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:204:36
[INFO] [stderr]     |
[INFO] [stderr] 204 |                               } else {
[INFO] [stderr]     |  ____________________________________^
[INFO] [stderr] 205 | |                                 if value < min_value {
[INFO] [stderr] 206 | |                                     self.min = Some(value);
[INFO] [stderr] 207 | |                                     self.insert_into_tree(value);
[INFO] [stderr] ...   |
[INFO] [stderr] 216 | |                                 }
[INFO] [stderr] 217 | |                             }
[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] 204 |                             } else if value < min_value {
[INFO] [stderr] 205 |     self.min = Some(value);
[INFO] [stderr] 206 |     self.insert_into_tree(value);
[INFO] [stderr] 207 |     return;
[INFO] [stderr] 208 | } else if value > max_value {
[INFO] [stderr] 209 |     self.max = Some(value);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:285:61
[INFO] [stderr]     |
[INFO] [stderr] 285 |                                               self.min = Some((first_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 286 | |                                                             * self.children.len() as T
[INFO] [stderr] 287 | |                                                              + min));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 285 |                                             self.min = Some(first_cluster
[INFO] [stderr] 286 |                                                             * self.children.len() as T
[INFO] [stderr] 287 |                                                              + min);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]    --> src/lib.rs:285:61
[INFO] [stderr]     |
[INFO] [stderr] 285 |                                               self.min = Some((first_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 286 | |                                                             * self.children.len() as T
[INFO] [stderr] 287 | |                                                              + min));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:312:61
[INFO] [stderr]     |
[INFO] [stderr] 312 |                                               self.max = Some((last_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 313 | |                                                              * self.children.len() as T
[INFO] [stderr] 314 | |                                                              + max));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 312 |                                             self.max = Some(last_cluster
[INFO] [stderr] 313 |                                                              * self.children.len() as T
[INFO] [stderr] 314 |                                                              + max);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]    --> src/lib.rs:312:61
[INFO] [stderr]     |
[INFO] [stderr] 312 |                                               self.max = Some((last_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 313 | |                                                              * self.children.len() as T
[INFO] [stderr] 314 | |                                                              + max));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:360:9
[INFO] [stderr]     |
[INFO] [stderr] 360 |         return self.min;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.min`
[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:371:9
[INFO] [stderr]     |
[INFO] [stderr] 371 |         return self.max;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.max`
[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:387:17
[INFO] [stderr]     |
[INFO] [stderr] 387 |                 return self.max;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.max`
[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:389:17
[INFO] [stderr]     |
[INFO] [stderr] 389 |                 return None;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 421 | |                 Some(n) => {
[INFO] [stderr] 422 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 423 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 426 | |                 }
[INFO] [stderr] 427 | |             };
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 420 |             match self.children[next_cluster].search(offset) {
[INFO] [stderr] 421 |                 Some(n) => {
[INFO] [stderr] 422 |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 423 |                 },
[INFO] [stderr] 424 |                 None => {
[INFO] [stderr] 425 |                     return None;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:444:17
[INFO] [stderr]     |
[INFO] [stderr] 444 |                 return self.min;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.min`
[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:446:17
[INFO] [stderr]     |
[INFO] [stderr] 446 |                 return None;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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:477:13
[INFO] [stderr]     |
[INFO] [stderr] 477 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 478 | |                 Some(n) => {
[INFO] [stderr] 479 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 480 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 483 | |                 }
[INFO] [stderr] 484 | |             };
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 477 |             match self.children[next_cluster].search(offset) {
[INFO] [stderr] 478 |                 Some(n) => {
[INFO] [stderr] 479 |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 480 |                 },
[INFO] [stderr] 481 |                 None => {
[INFO] [stderr] 482 |                     return None;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         return tree
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `tree`
[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:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 |         return value / self.children.len();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `value / self.children.len()`
[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:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |         return value % self.children.len();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `value % self.children.len()`
[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:114:21
[INFO] [stderr]     |
[INFO] [stderr] 114 |                     return true;
[INFO] [stderr]     |                     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:119:33
[INFO] [stderr]     |
[INFO] [stderr] 119 |                                 return true;
[INFO] [stderr]     |                                 ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[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:122:37
[INFO] [stderr]     |
[INFO] [stderr] 122 | /                                     return self
[INFO] [stderr] 123 | |                                         .children[self.high(value)]
[INFO] [stderr] 124 | |                                         .contains(self.low(value));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 122 |                                     self
[INFO] [stderr] 123 |                                         .children[self.high(value)]
[INFO] [stderr] 124 |                                         .contains(self.low(value))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:126:37
[INFO] [stderr]     |
[INFO] [stderr] 126 |                                     return false;
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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:130:34
[INFO] [stderr]     |
[INFO] [stderr] 130 |                         None => {return false;}
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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:134:22
[INFO] [stderr]     |
[INFO] [stderr] 134 |             None => {return false;}
[INFO] [stderr]     |                      ^^^^^^^^^^^^^ help: remove `return` as shown: `false`
[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:120:36
[INFO] [stderr]     |
[INFO] [stderr] 120 |                               } else {
[INFO] [stderr]     |  ____________________________________^
[INFO] [stderr] 121 | |                                 if self.children.len() > 0 {
[INFO] [stderr] 122 | |                                     return self
[INFO] [stderr] 123 | |                                         .children[self.high(value)]
[INFO] [stderr] ...   |
[INFO] [stderr] 127 | |                                 }
[INFO] [stderr] 128 | |                             }
[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] 120 |                             } else if self.children.len() > 0 {
[INFO] [stderr] 121 |     return self
[INFO] [stderr] 122 |         .children[self.high(value)]
[INFO] [stderr] 123 |         .contains(self.low(value));
[INFO] [stderr] 124 | } else {
[INFO] [stderr] 125 |     return false;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |             return None;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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:164:13
[INFO] [stderr]     |
[INFO] [stderr] 164 |             return Some(result+local_idx*self.children.len());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(result+local_idx*self.children.len())`
[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:204:36
[INFO] [stderr]     |
[INFO] [stderr] 204 |                               } else {
[INFO] [stderr]     |  ____________________________________^
[INFO] [stderr] 205 | |                                 if value < min_value {
[INFO] [stderr] 206 | |                                     self.min = Some(value);
[INFO] [stderr] 207 | |                                     self.insert_into_tree(value);
[INFO] [stderr] ...   |
[INFO] [stderr] 216 | |                                 }
[INFO] [stderr] 217 | |                             }
[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] 204 |                             } else if value < min_value {
[INFO] [stderr] 205 |     self.min = Some(value);
[INFO] [stderr] 206 |     self.insert_into_tree(value);
[INFO] [stderr] 207 |     return;
[INFO] [stderr] 208 | } else if value > max_value {
[INFO] [stderr] 209 |     self.max = Some(value);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:285:61
[INFO] [stderr]     |
[INFO] [stderr] 285 |                                               self.min = Some((first_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 286 | |                                                             * self.children.len() as T
[INFO] [stderr] 287 | |                                                              + min));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 285 |                                             self.min = Some(first_cluster
[INFO] [stderr] 286 |                                                             * self.children.len() as T
[INFO] [stderr] 287 |                                                              + min);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]    --> src/lib.rs:285:61
[INFO] [stderr]     |
[INFO] [stderr] 285 |                                               self.min = Some((first_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 286 | |                                                             * self.children.len() as T
[INFO] [stderr] 287 | |                                                              + min));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:312:61
[INFO] [stderr]     |
[INFO] [stderr] 312 |                                               self.max = Some((last_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 313 | |                                                              * self.children.len() as T
[INFO] [stderr] 314 | |                                                              + max));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 312 |                                             self.max = Some(last_cluster
[INFO] [stderr] 313 |                                                              * self.children.len() as T
[INFO] [stderr] 314 |                                                              + max);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]    --> src/lib.rs:312:61
[INFO] [stderr]     |
[INFO] [stderr] 312 |                                               self.max = Some((last_cluster
[INFO] [stderr]     |  _____________________________________________________________^
[INFO] [stderr] 313 | |                                                              * self.children.len() as T
[INFO] [stderr] 314 | |                                                              + max));
[INFO] [stderr]     | |___________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:360:9
[INFO] [stderr]     |
[INFO] [stderr] 360 |         return self.min;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.min`
[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:371:9
[INFO] [stderr]     |
[INFO] [stderr] 371 |         return self.max;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.max`
[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:387:17
[INFO] [stderr]     |
[INFO] [stderr] 387 |                 return self.max;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.max`
[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:389:17
[INFO] [stderr]     |
[INFO] [stderr] 389 |                 return None;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 421 | |                 Some(n) => {
[INFO] [stderr] 422 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 423 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 426 | |                 }
[INFO] [stderr] 427 | |             };
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 420 |             match self.children[next_cluster].search(offset) {
[INFO] [stderr] 421 |                 Some(n) => {
[INFO] [stderr] 422 |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 423 |                 },
[INFO] [stderr] 424 |                 None => {
[INFO] [stderr] 425 |                     return None;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:444:17
[INFO] [stderr]     |
[INFO] [stderr] 444 |                 return self.min;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.min`
[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:446:17
[INFO] [stderr]     |
[INFO] [stderr] 446 |                 return None;
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[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:477:13
[INFO] [stderr]     |
[INFO] [stderr] 477 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 478 | |                 Some(n) => {
[INFO] [stderr] 479 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 480 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 483 | |                 }
[INFO] [stderr] 484 | |             };
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 477 |             match self.children[next_cluster].search(offset) {
[INFO] [stderr] 478 |                 Some(n) => {
[INFO] [stderr] 479 |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 480 |                 },
[INFO] [stderr] 481 |                 None => {
[INFO] [stderr] 482 |                     return None;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:406:25
[INFO] [stderr]     |
[INFO] [stderr] 406 | /                         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 407 | |                             Some(n) => {
[INFO] [stderr] 408 | |                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stderr] 409 | |                             },
[INFO] [stderr] ...   |
[INFO] [stderr] 412 | |                             }
[INFO] [stderr] 413 | |                         };
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 421 | |                 Some(n) => {
[INFO] [stderr] 422 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 423 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 426 | |                 }
[INFO] [stderr] 427 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:463:25
[INFO] [stderr]     |
[INFO] [stderr] 463 | /                         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 464 | |                             Some(n) => {
[INFO] [stderr] 465 | |                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stderr] 466 | |                             },
[INFO] [stderr] ...   |
[INFO] [stderr] 469 | |                             }
[INFO] [stderr] 470 | |                         };
[INFO] [stderr]     | |_________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:406:25
[INFO] [stderr]     |
[INFO] [stderr] 406 | /                         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 407 | |                             Some(n) => {
[INFO] [stderr] 408 | |                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stderr] 409 | |                             },
[INFO] [stderr] ...   |
[INFO] [stderr] 412 | |                             }
[INFO] [stderr] 413 | |                         };
[INFO] [stderr]     | |_________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:477:13
[INFO] [stderr]     |
[INFO] [stderr] 477 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 478 | |                 Some(n) => {
[INFO] [stderr] 479 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 480 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 483 | |                 }
[INFO] [stderr] 484 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:420:13
[INFO] [stderr]     |
[INFO] [stderr] 420 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 421 | |                 Some(n) => {
[INFO] [stderr] 422 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 423 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 426 | |                 }
[INFO] [stderr] 427 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:463:25
[INFO] [stderr]     |
[INFO] [stderr] 463 | /                         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 464 | |                             Some(n) => {
[INFO] [stderr] 465 | |                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stderr] 466 | |                             },
[INFO] [stderr] ...   |
[INFO] [stderr] 469 | |                             }
[INFO] [stderr] 470 | |                         };
[INFO] [stderr]     | |_________________________^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:477:13
[INFO] [stderr]     |
[INFO] [stderr] 477 | /             return match self.children[next_cluster].search(offset) {
[INFO] [stderr] 478 | |                 Some(n) => {
[INFO] [stderr] 479 | |                     return Some(n + next_cluster*self.children.len());
[INFO] [stderr] 480 | |                 },
[INFO] [stderr] ...   |
[INFO] [stderr] 483 | |                 }
[INFO] [stderr] 484 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/lib.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |             for index in 0..self_size {
[INFO] [stderr]    |                 ^^^^^ help: consider using `_index` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `min_value`
[INFO] [stderr]    --> src/lib.rs:179:22
[INFO] [stderr]     |
[INFO] [stderr] 179 |                 Some(min_value) => (),
[INFO] [stderr]     |                      ^^^^^^^^^ help: consider using `_min_value` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `min_val`
[INFO] [stderr]    --> src/lib.rs:384:17
[INFO] [stderr]     |
[INFO] [stderr] 384 |             let min_val = self.min?;
[INFO] [stderr]     |                 ^^^^^^^ help: consider using `_min_val` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |             let mut aux = Self::new(pass_size);
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let mut tree = VEBTree {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 | /         let pass_size: usize;
[INFO] [stderr] 48 | |         if max_size <= 2 {
[INFO] [stderr] 49 | |             self_size = 0;
[INFO] [stderr] 50 | |             pass_size = 0;
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |             pass_size = tmp;
[INFO] [stderr] 55 | |         }
[INFO] [stderr]    | |_________^ help: it is more idiomatic to write: `let pass_size = if max_size <= 2 { ..; 0 } else { ..; tmp };`
[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: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:121:36
[INFO] [stderr]     |
[INFO] [stderr] 121 |                                 if self.children.len() > 0 {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.children.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/lib.rs:157:12
[INFO] [stderr]     |
[INFO] [stderr] 157 |         if self.children.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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/lib.rs:175:12
[INFO] [stderr]     |
[INFO] [stderr] 175 |         if self.children.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.children.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/lib.rs:244:12
[INFO] [stderr]     |
[INFO] [stderr] 244 |         if self.children.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.children.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/lib.rs:269:35
[INFO] [stderr]     |
[INFO] [stderr] 269 |                         } else if self.children.len() == 0 {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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/lib.rs:383:12
[INFO] [stderr]     |
[INFO] [stderr] 383 |         if self.children.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:392:13
[INFO] [stderr]     |
[INFO] [stderr] 392 | /             match self.min {
[INFO] [stderr] 393 | |                 Some(min_value) => {
[INFO] [stderr] 394 | |                     if value < min_value {
[INFO] [stderr] 395 | |                         return self.min
[INFO] [stderr] ...   |
[INFO] [stderr] 398 | |                 None => ()
[INFO] [stderr] 399 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 392 |             if let Some(min_value) = self.min {
[INFO] [stderr] 393 |     if value < min_value {
[INFO] [stderr] 394 |         return self.min
[INFO] [stderr] 395 |     }
[INFO] [stderr] 396 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:401:13
[INFO] [stderr]     |
[INFO] [stderr] 401 | /             match cur_cluster_max {
[INFO] [stderr] 402 | |                 Some(max_value) => {
[INFO] [stderr] 403 | |                     if self.low(value) < max_value {
[INFO] [stderr] 404 | |                         let offset = self.children[self.high(value)]
[INFO] [stderr] ...   |
[INFO] [stderr] 416 | |                 None => ()
[INFO] [stderr] 417 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 401 |             if let Some(max_value) = cur_cluster_max {
[INFO] [stderr] 402 |     if self.low(value) < max_value {
[INFO] [stderr] 403 |         let offset = self.children[self.high(value)]
[INFO] [stderr] 404 |             .findnext(self.low(value))?;
[INFO] [stderr] 405 |         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 406 |             Some(n) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:440:12
[INFO] [stderr]     |
[INFO] [stderr] 440 |         if self.children.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:449:13
[INFO] [stderr]     |
[INFO] [stderr] 449 | /             match self.maximum() {
[INFO] [stderr] 450 | |                 Some(max_value) => {
[INFO] [stderr] 451 | |                     if value > max_value {
[INFO] [stderr] 452 | |                         return self.max;
[INFO] [stderr] ...   |
[INFO] [stderr] 455 | |                 None => ()
[INFO] [stderr] 456 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 449 |             if let Some(max_value) = self.maximum() {
[INFO] [stderr] 450 |     if value > max_value {
[INFO] [stderr] 451 |         return self.max;
[INFO] [stderr] 452 |     }
[INFO] [stderr] 453 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:458:13
[INFO] [stderr]     |
[INFO] [stderr] 458 | /             match cur_cluster_min {
[INFO] [stderr] 459 | |                 Some(min_value) => {
[INFO] [stderr] 460 | |                     if self.low(value) > min_value {
[INFO] [stderr] 461 | |                         let offset = self.children[self.high(value)]
[INFO] [stderr] ...   |
[INFO] [stderr] 473 | |                 None => ()
[INFO] [stderr] 474 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 458 |             if let Some(min_value) = cur_cluster_min {
[INFO] [stderr] 459 |     if self.low(value) > min_value {
[INFO] [stderr] 460 |         let offset = self.children[self.high(value)]
[INFO] [stderr] 461 |             .findprev(self.low(value))?;
[INFO] [stderr] 462 |         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 463 |             Some(n) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/lib.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |             for index in 0..self_size {
[INFO] [stderr]    |                 ^^^^^ help: consider using `_index` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `min_value`
[INFO] [stderr]    --> src/lib.rs:179:22
[INFO] [stderr]     |
[INFO] [stderr] 179 |                 Some(min_value) => (),
[INFO] [stderr]     |                      ^^^^^^^^^ help: consider using `_min_value` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `min_val`
[INFO] [stderr]    --> src/lib.rs:384:17
[INFO] [stderr]     |
[INFO] [stderr] 384 |             let min_val = self.min?;
[INFO] [stderr]     |                 ^^^^^^^ help: consider using `_min_val` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |             let mut aux = Self::new(pass_size);
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let mut tree = VEBTree {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tests.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut reference_tree = VEBTree::new(16);
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `test_results`.
[INFO] [stderr]   --> src/test_asymptotes.rs:24:14
[INFO] [stderr]    |
[INFO] [stderr] 24 |     for i in 0..test_results.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 24 |     for <item> in &mut test_results {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `test_results`.
[INFO] [stderr]   --> src/test_asymptotes.rs:59:14
[INFO] [stderr]    |
[INFO] [stderr] 59 |     for i in 0..test_results.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 59 |     for <item> in &mut test_results {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `test_results`.
[INFO] [stderr]   --> src/test_asymptotes.rs:92:14
[INFO] [stderr]    |
[INFO] [stderr] 92 |     for i in 0..test_results.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 92 |     for <item> in &mut test_results {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `test_results`.
[INFO] [stderr]    --> src/test_asymptotes.rs:126:14
[INFO] [stderr]     |
[INFO] [stderr] 126 |     for i in 0..test_results.len() {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]     |
[INFO] [stderr] 126 |     for <item> in &mut test_results {
[INFO] [stderr]     |         ^^^^^^    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/test_asymptotes.rs:145:11
[INFO] [stderr]     |
[INFO] [stderr] 145 |         + ( elapsed.subsec_nanos() as f64);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(elapsed.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: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 | /         let pass_size: usize;
[INFO] [stderr] 48 | |         if max_size <= 2 {
[INFO] [stderr] 49 | |             self_size = 0;
[INFO] [stderr] 50 | |             pass_size = 0;
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |             pass_size = tmp;
[INFO] [stderr] 55 | |         }
[INFO] [stderr]    | |_________^ help: it is more idiomatic to write: `let pass_size = if max_size <= 2 { ..; 0 } else { ..; tmp };`
[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: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:121:36
[INFO] [stderr]     |
[INFO] [stderr] 121 |                                 if self.children.len() > 0 {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.children.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/lib.rs:157:12
[INFO] [stderr]     |
[INFO] [stderr] 157 |         if self.children.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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/lib.rs:175:12
[INFO] [stderr]     |
[INFO] [stderr] 175 |         if self.children.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.children.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/lib.rs:244:12
[INFO] [stderr]     |
[INFO] [stderr] 244 |         if self.children.len() > 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.children.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/lib.rs:269:35
[INFO] [stderr]     |
[INFO] [stderr] 269 |                         } else if self.children.len() == 0 {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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/lib.rs:383:12
[INFO] [stderr]     |
[INFO] [stderr] 383 |         if self.children.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:392:13
[INFO] [stderr]     |
[INFO] [stderr] 392 | /             match self.min {
[INFO] [stderr] 393 | |                 Some(min_value) => {
[INFO] [stderr] 394 | |                     if value < min_value {
[INFO] [stderr] 395 | |                         return self.min
[INFO] [stderr] ...   |
[INFO] [stderr] 398 | |                 None => ()
[INFO] [stderr] 399 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 392 |             if let Some(min_value) = self.min {
[INFO] [stderr] 393 |     if value < min_value {
[INFO] [stderr] 394 |         return self.min
[INFO] [stderr] 395 |     }
[INFO] [stderr] 396 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:401:13
[INFO] [stderr]     |
[INFO] [stderr] 401 | /             match cur_cluster_max {
[INFO] [stderr] 402 | |                 Some(max_value) => {
[INFO] [stderr] 403 | |                     if self.low(value) < max_value {
[INFO] [stderr] 404 | |                         let offset = self.children[self.high(value)]
[INFO] [stderr] ...   |
[INFO] [stderr] 416 | |                 None => ()
[INFO] [stderr] 417 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 401 |             if let Some(max_value) = cur_cluster_max {
[INFO] [stderr] 402 |     if self.low(value) < max_value {
[INFO] [stderr] 403 |         let offset = self.children[self.high(value)]
[INFO] [stderr] 404 |             .findnext(self.low(value))?;
[INFO] [stderr] 405 |         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 406 |             Some(n) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/lib.rs:440:12
[INFO] [stderr]     |
[INFO] [stderr] 440 |         if self.children.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.children.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: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:449:13
[INFO] [stderr]     |
[INFO] [stderr] 449 | /             match self.maximum() {
[INFO] [stderr] 450 | |                 Some(max_value) => {
[INFO] [stderr] 451 | |                     if value > max_value {
[INFO] [stderr] 452 | |                         return self.max;
[INFO] [stderr] ...   |
[INFO] [stderr] 455 | |                 None => ()
[INFO] [stderr] 456 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 449 |             if let Some(max_value) = self.maximum() {
[INFO] [stderr] 450 |     if value > max_value {
[INFO] [stderr] 451 |         return self.max;
[INFO] [stderr] 452 |     }
[INFO] [stderr] 453 | };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/lib.rs:458:13
[INFO] [stderr]     |
[INFO] [stderr] 458 | /             match cur_cluster_min {
[INFO] [stderr] 459 | |                 Some(min_value) => {
[INFO] [stderr] 460 | |                     if self.low(value) > min_value {
[INFO] [stderr] 461 | |                         let offset = self.children[self.high(value)]
[INFO] [stderr] ...   |
[INFO] [stderr] 473 | |                 None => ()
[INFO] [stderr] 474 | |             };
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 458 |             if let Some(min_value) = cur_cluster_min {
[INFO] [stderr] 459 |     if self.low(value) > min_value {
[INFO] [stderr] 460 |         let offset = self.children[self.high(value)]
[INFO] [stderr] 461 |             .findprev(self.low(value))?;
[INFO] [stderr] 462 |         return match self.children[self.high(value)].search(offset) {
[INFO] [stderr] 463 |             Some(n) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "6db634291c9e5c34089a971bb7cc403aa7d36b2d2cd65d71b65d13b521ec29d2"`
[INFO] running `"docker" "rm" "-f" "6db634291c9e5c34089a971bb7cc403aa7d36b2d2cd65d71b65d13b521ec29d2"`
[INFO] [stdout] 6db634291c9e5c34089a971bb7cc403aa7d36b2d2cd65d71b65d13b521ec29d2