[INFO] fetching crate vebtrees 0.1.4...
[INFO] testing vebtrees-0.1.4 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate vebtrees 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate vebtrees 0.1.4 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate vebtrees 0.1.4
[INFO] finished tweaking crates.io crate vebtrees 0.1.4
[INFO] tweaked toml for crates.io crate vebtrees 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 14419e0049c17be11fdf36806b6e22e797c7112ab8378969a1d2d17a43b8348a
[INFO] running `"docker" "start" "-a" "14419e0049c17be11fdf36806b6e22e797c7112ab8378969a1d2d17a43b8348a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling vebtrees v0.1.4 (/opt/rustwide/workdir)
[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: 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]     |
[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: 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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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: if this is intentional, prefix it with an underscore: `_index`
[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: if this is intentional, prefix it with an underscore: `_min_value`
[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: if this is intentional, prefix it with an underscore: `_min_val`
[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: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `"docker" "inspect" "14419e0049c17be11fdf36806b6e22e797c7112ab8378969a1d2d17a43b8348a"`
[INFO] running `"docker" "rm" "-f" "14419e0049c17be11fdf36806b6e22e797c7112ab8378969a1d2d17a43b8348a"`
[INFO] [stdout] 14419e0049c17be11fdf36806b6e22e797c7112ab8378969a1d2d17a43b8348a
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ecc94b750047bb761aa817137111b9aca494ded9b37689a239fa34d7151a81c2
[INFO] running `"docker" "start" "-a" "ecc94b750047bb761aa817137111b9aca494ded9b37689a239fa34d7151a81c2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling vebtrees v0.1.4 (/opt/rustwide/workdir)
[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: 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]     |
[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: 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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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: if this is intentional, prefix it with an underscore: `_index`
[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: if this is intentional, prefix it with an underscore: `_min_value`
[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: if this is intentional, prefix it with an underscore: `_min_val`
[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: 11 warnings emitted
[INFO] [stderr] 
[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` iterator 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` iterator 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` iterator 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` iterator 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: 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] 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: 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]     |
[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: 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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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: if this is intentional, prefix it with an underscore: `_index`
[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: if this is intentional, prefix it with an underscore: `_min_value`
[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: if this is intentional, prefix it with an underscore: `_min_val`
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/tests.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let mut reference_tree = VEBTree::new(i);
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "ecc94b750047bb761aa817137111b9aca494ded9b37689a239fa34d7151a81c2"`
[INFO] running `"docker" "rm" "-f" "ecc94b750047bb761aa817137111b9aca494ded9b37689a239fa34d7151a81c2"`
[INFO] [stdout] ecc94b750047bb761aa817137111b9aca494ded9b37689a239fa34d7151a81c2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4ccc41dab57fb476a0b21b706908e8f48ce268ca3ef84d40517b0618b0bc758a
[INFO] running `"docker" "start" "-a" "4ccc41dab57fb476a0b21b706908e8f48ce268ca3ef84d40517b0618b0bc758a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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: 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]     |
[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: 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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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: if this is intentional, prefix it with an underscore: `_index`
[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: if this is intentional, prefix it with an underscore: `_min_value`
[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: if this is intentional, prefix it with an underscore: `_min_val`
[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: 11 warnings emitted
[INFO] [stderr] 
[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` iterator 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` iterator 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` iterator 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` iterator 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: 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] 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: 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]     |
[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: 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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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]     |  __________________________^______-
[INFO] [stderr]     | | _________________________|
[INFO] [stderr]     | ||
[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]     | |__________________________unreachable expression
[INFO] [stderr]     |                            any code following this `match` expression is unreachable, as all arms diverge
[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]     |  ______________^______-
[INFO] [stderr]     | | _____________|
[INFO] [stderr]     | ||
[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]     | |______________unreachable expression
[INFO] [stderr]     |                any code following this `match` expression is unreachable, as all arms diverge
[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: if this is intentional, prefix it with an underscore: `_index`
[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: if this is intentional, prefix it with an underscore: `_min_value`
[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: if this is intentional, prefix it with an underscore: `_min_val`
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/tests.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let mut reference_tree = VEBTree::new(i);
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/vebtrees-79521a43f36bed0d
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test tests::test_search_correctness ... ok
[INFO] [stdout] test tests::test_contains_correctness ... ok
[INFO] [stdout] test tests::test_minimum_correctness ... ok
[INFO] [stdout] test tests::test_maximum_correctness ... ok
[INFO] [stdout] test tests::test_findprev_correctness ... ok
[INFO] [stdout] test tests::test_insert_and_delete_correctness ... ok
[INFO] [stdout] test tests::test_insert_and_delete_correctness_odd ... ok
[INFO] [stdout] test tests::test_findnext_correctness ... ok
[INFO] [stdout] test test_asymptotes::test_insert_asymptote ... ok
[INFO] [stdout] test test_asymptotes::test_delete_asymptote ... ok
[INFO] [stdout] test test_asymptotes::test_findnext_asymptote ... ok
[INFO] [stdout] test test_asymptotes::test_findprev_asymptote ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vebtrees
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4ccc41dab57fb476a0b21b706908e8f48ce268ca3ef84d40517b0618b0bc758a"`
[INFO] running `"docker" "rm" "-f" "4ccc41dab57fb476a0b21b706908e8f48ce268ca3ef84d40517b0618b0bc758a"`
[INFO] [stdout] 4ccc41dab57fb476a0b21b706908e8f48ce268ca3ef84d40517b0618b0bc758a