[INFO] cloning repository https://github.com/JMurph2015/rust-vebtrees
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JMurph2015/rust-vebtrees" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJMurph2015%2Frust-vebtrees", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJMurph2015%2Frust-vebtrees'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0120b1332b903167260df47a8b43430faca81f9c
[INFO] checking JMurph2015/rust-vebtrees against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJMurph2015%2Frust-vebtrees" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JMurph2015/rust-vebtrees on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JMurph2015/rust-vebtrees
[INFO] finished tweaking git repo https://github.com/JMurph2015/rust-vebtrees
[INFO] tweaked toml for git repo https://github.com/JMurph2015/rust-vebtrees written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JMurph2015/rust-vebtrees already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.travis-ci
[INFO] [stderr]      Locking 1 package
[INFO] [stderr]     Updating vebtrees v0.1.3 (/workspace/builds/worker-4-tc1/source) -> v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fd8372977a80149f0a5e1d3e356c58cb5cdfc00a97cc01d780b028f0bc0a9a5
[INFO] running `Command { std: "docker" "start" "-a" "3fd8372977a80149f0a5e1d3e356c58cb5cdfc00a97cc01d780b028f0bc0a9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fd8372977a80149f0a5e1d3e356c58cb5cdfc00a97cc01d780b028f0bc0a9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fd8372977a80149f0a5e1d3e356c58cb5cdfc00a97cc01d780b028f0bc0a9a5", kill_on_drop: false }`
[INFO] [stdout] 3fd8372977a80149f0a5e1d3e356c58cb5cdfc00a97cc01d780b028f0bc0a9a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 332401cbea18f31f6de08c4e4f02882a06251fee34c53c0fb34389146937feda
[INFO] running `Command { std: "docker" "start" "-a" "332401cbea18f31f6de08c4e4f02882a06251fee34c53c0fb34389146937feda", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.travis-ci
[INFO] [stderr]     Checking vebtrees v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:285:61
[INFO] [stdout]     |
[INFO] [stdout] 285 | ...                   self.min = Some((first_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 286 | ...                                   * self.children.len() as T
[INFO] [stdout] 287 | ...                                    + min));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 285 ~                                             self.min = Some(first_cluster
[INFO] [stdout] 286 |                                                             * self.children.len() as T
[INFO] [stdout] 287 ~                                                              + min);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:312:61
[INFO] [stdout]     |
[INFO] [stdout] 312 | ...                   self.max = Some((last_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 313 | ...                                    * self.children.len() as T
[INFO] [stdout] 314 | ...                                    + max));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 312 ~                                             self.max = Some(last_cluster
[INFO] [stdout] 313 |                                                              * self.children.len() as T
[INFO] [stdout] 314 ~                                                              + max);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]  --> src/tests.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::{Instant, Duration};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:406:25
[INFO] [stdout]     |
[INFO] [stdout] 406 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 407 | ||                             Some(n) => {
[INFO] [stdout] 408 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 409 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 412 | ||                             }
[INFO] [stdout] 413 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:420:13
[INFO] [stdout]     |
[INFO] [stdout] 420 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 421 | ||                 Some(n) => {
[INFO] [stdout] 422 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 423 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 426 | ||                 }
[INFO] [stdout] 427 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:463:25
[INFO] [stdout]     |
[INFO] [stdout] 463 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 464 | ||                             Some(n) => {
[INFO] [stdout] 465 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 466 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 469 | ||                             }
[INFO] [stdout] 470 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:477:13
[INFO] [stdout]     |
[INFO] [stdout] 477 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 478 | ||                 Some(n) => {
[INFO] [stdout] 479 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 480 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 483 | ||                 }
[INFO] [stdout] 484 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lib.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             for index in 0..self_size {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let mut aux = Self::new(pass_size);
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut tree = VEBTree {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_value`
[INFO] [stdout]    --> src/lib.rs:179:22
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 Some(min_value) => (),
[INFO] [stdout]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]  --> src/test_asymptotes.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     for i in (0..num_runs) {
[INFO] [stdout]   |              ^           ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -     for i in (0..num_runs) {
[INFO] [stdout] 9 +     for i in 0..num_runs {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/test_asymptotes.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 |     for i in (0..num_runs) {
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 39 -     for i in (0..num_runs) {
[INFO] [stdout] 39 +     for i in 0..num_runs {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/test_asymptotes.rs:74:14
[INFO] [stdout]    |
[INFO] [stdout] 74 |     for i in (0..num_runs) {
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 74 -     for i in (0..num_runs) {
[INFO] [stdout] 74 +     for i in 0..num_runs {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/test_asymptotes.rs:108:14
[INFO] [stdout]     |
[INFO] [stdout] 108 |     for i in (0..num_runs) {
[INFO] [stdout]     |              ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 108 -     for i in (0..num_runs) {
[INFO] [stdout] 108 +     for i in 0..num_runs {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:285:61
[INFO] [stdout]     |
[INFO] [stdout] 285 | ...                   self.min = Some((first_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 286 | ...                                   * self.children.len() as T
[INFO] [stdout] 287 | ...                                    + min));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 285 ~                                             self.min = Some(first_cluster
[INFO] [stdout] 286 |                                                             * self.children.len() as T
[INFO] [stdout] 287 ~                                                              + min);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:312:61
[INFO] [stdout]     |
[INFO] [stdout] 312 | ...                   self.max = Some((last_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 313 | ...                                    * self.children.len() as T
[INFO] [stdout] 314 | ...                                    + max));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 312 ~                                             self.max = Some(last_cluster
[INFO] [stdout] 313 |                                                              * self.children.len() as T
[INFO] [stdout] 314 ~                                                              + max);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_val`
[INFO] [stdout]    --> src/lib.rs:384:17
[INFO] [stdout]     |
[INFO] [stdout] 384 |             let min_val = self.min?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:406:25
[INFO] [stdout]     |
[INFO] [stdout] 406 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 407 | ||                             Some(n) => {
[INFO] [stdout] 408 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 409 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 412 | ||                             }
[INFO] [stdout] 413 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:420:13
[INFO] [stdout]     |
[INFO] [stdout] 420 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 421 | ||                 Some(n) => {
[INFO] [stdout] 422 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 423 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 426 | ||                 }
[INFO] [stdout] 427 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:463:25
[INFO] [stdout]     |
[INFO] [stdout] 463 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 464 | ||                             Some(n) => {
[INFO] [stdout] 465 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 466 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 469 | ||                             }
[INFO] [stdout] 470 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:477:13
[INFO] [stdout]     |
[INFO] [stdout] 477 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 478 | ||                 Some(n) => {
[INFO] [stdout] 479 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 480 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 483 | ||                 }
[INFO] [stdout] 484 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut reference_tree = VEBTree::new(16);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut reference_tree = VEBTree::new(i);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lib.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             for index in 0..self_size {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let mut aux = Self::new(pass_size);
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut tree = VEBTree {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_value`
[INFO] [stdout]    --> src/lib.rs:179:22
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 Some(min_value) => (),
[INFO] [stdout]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_val`
[INFO] [stdout]    --> src/lib.rs:384:17
[INFO] [stdout]     |
[INFO] [stdout] 384 |             let min_val = self.min?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "332401cbea18f31f6de08c4e4f02882a06251fee34c53c0fb34389146937feda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "332401cbea18f31f6de08c4e4f02882a06251fee34c53c0fb34389146937feda", kill_on_drop: false }`
[INFO] [stdout] 332401cbea18f31f6de08c4e4f02882a06251fee34c53c0fb34389146937feda
[INFO] checking JMurph2015/rust-vebtrees against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJMurph2015%2Frust-vebtrees" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JMurph2015/rust-vebtrees on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JMurph2015/rust-vebtrees
[INFO] finished tweaking git repo https://github.com/JMurph2015/rust-vebtrees
[INFO] tweaked toml for git repo https://github.com/JMurph2015/rust-vebtrees written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JMurph2015/rust-vebtrees already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.travis-ci
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69122655f2fd7cc428f3c4c3d0150fbd1904bf0471fc8b9cae6d6c02161bcb71
[INFO] running `Command { std: "docker" "start" "-a" "69122655f2fd7cc428f3c4c3d0150fbd1904bf0471fc8b9cae6d6c02161bcb71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69122655f2fd7cc428f3c4c3d0150fbd1904bf0471fc8b9cae6d6c02161bcb71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69122655f2fd7cc428f3c4c3d0150fbd1904bf0471fc8b9cae6d6c02161bcb71", kill_on_drop: false }`
[INFO] [stdout] 69122655f2fd7cc428f3c4c3d0150fbd1904bf0471fc8b9cae6d6c02161bcb71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 804b63dcc59a21c166a7cfb0a97b1e0a8b65bd5efdfea0427aee5266da0cc996
[INFO] running `Command { std: "docker" "start" "-a" "804b63dcc59a21c166a7cfb0a97b1e0a8b65bd5efdfea0427aee5266da0cc996", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.travis-ci
[INFO] [stderr]     Checking vebtrees v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:285:61
[INFO] [stdout]     |
[INFO] [stdout] 285 | ...                   self.min = Some((first_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 286 | ...                                   * self.children.len() as T
[INFO] [stdout] 287 | ...                                    + min));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 285 ~                                             self.min = Some(first_cluster
[INFO] [stdout] 286 |                                                             * self.children.len() as T
[INFO] [stdout] 287 ~                                                              + min);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:312:61
[INFO] [stdout]     |
[INFO] [stdout] 312 | ...                   self.max = Some((last_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 313 | ...                                    * self.children.len() as T
[INFO] [stdout] 314 | ...                                    + max));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 312 ~                                             self.max = Some(last_cluster
[INFO] [stdout] 313 |                                                              * self.children.len() as T
[INFO] [stdout] 314 ~                                                              + max);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]  --> src/tests.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::{Instant, Duration};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:406:25
[INFO] [stdout]     |
[INFO] [stdout] 406 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 407 | ||                             Some(n) => {
[INFO] [stdout] 408 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 409 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 412 | ||                             }
[INFO] [stdout] 413 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:420:13
[INFO] [stdout]     |
[INFO] [stdout] 420 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 421 | ||                 Some(n) => {
[INFO] [stdout] 422 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 423 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 426 | ||                 }
[INFO] [stdout] 427 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:463:25
[INFO] [stdout]     |
[INFO] [stdout] 463 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 464 | ||                             Some(n) => {
[INFO] [stdout] 465 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 466 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 469 | ||                             }
[INFO] [stdout] 470 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:477:13
[INFO] [stdout]     |
[INFO] [stdout] 477 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 478 | ||                 Some(n) => {
[INFO] [stdout] 479 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 480 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 483 | ||                 }
[INFO] [stdout] 484 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lib.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             for index in 0..self_size {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let mut aux = Self::new(pass_size);
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut tree = VEBTree {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]  --> src/test_asymptotes.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     for i in (0..num_runs) {
[INFO] [stdout]   |              ^           ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -     for i in (0..num_runs) {
[INFO] [stdout] 9 +     for i in 0..num_runs {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/test_asymptotes.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 |     for i in (0..num_runs) {
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 39 -     for i in (0..num_runs) {
[INFO] [stdout] 39 +     for i in 0..num_runs {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_value`
[INFO] [stdout]    --> src/lib.rs:179:22
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 Some(min_value) => (),
[INFO] [stdout]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/test_asymptotes.rs:74:14
[INFO] [stdout]    |
[INFO] [stdout] 74 |     for i in (0..num_runs) {
[INFO] [stdout]    |              ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 74 -     for i in (0..num_runs) {
[INFO] [stdout] 74 +     for i in 0..num_runs {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/test_asymptotes.rs:108:14
[INFO] [stdout]     |
[INFO] [stdout] 108 |     for i in (0..num_runs) {
[INFO] [stdout]     |              ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 108 -     for i in (0..num_runs) {
[INFO] [stdout] 108 +     for i in 0..num_runs {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:285:61
[INFO] [stdout]     |
[INFO] [stdout] 285 | ...                   self.min = Some((first_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 286 | ...                                   * self.children.len() as T
[INFO] [stdout] 287 | ...                                    + min));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 285 ~                                             self.min = Some(first_cluster
[INFO] [stdout] 286 |                                                             * self.children.len() as T
[INFO] [stdout] 287 ~                                                              + min);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/lib.rs:312:61
[INFO] [stdout]     |
[INFO] [stdout] 312 | ...                   self.max = Some((last_cluster
[INFO] [stdout]     |                                       ^
[INFO] [stdout] 313 | ...                                    * self.children.len() as T
[INFO] [stdout] 314 | ...                                    + max));
[INFO] [stdout]     |                                             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 312 ~                                             self.max = Some(last_cluster
[INFO] [stdout] 313 |                                                              * self.children.len() as T
[INFO] [stdout] 314 ~                                                              + max);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_val`
[INFO] [stdout]    --> src/lib.rs:384:17
[INFO] [stdout]     |
[INFO] [stdout] 384 |             let min_val = self.min?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:406:25
[INFO] [stdout]     |
[INFO] [stdout] 406 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 407 | ||                             Some(n) => {
[INFO] [stdout] 408 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 409 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 412 | ||                             }
[INFO] [stdout] 413 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:420:13
[INFO] [stdout]     |
[INFO] [stdout] 420 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 421 | ||                 Some(n) => {
[INFO] [stdout] 422 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 423 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 426 | ||                 }
[INFO] [stdout] 427 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:463:25
[INFO] [stdout]     |
[INFO] [stdout] 463 |                            return match self.children[self.high(value)].search(offset) {
[INFO] [stdout]     |   _________________________^______-
[INFO] [stdout]     |  |_________________________|
[INFO] [stdout]     | ||
[INFO] [stdout] 464 | ||                             Some(n) => {
[INFO] [stdout] 465 | ||                                 return Some(n + self.high(value)*self.children.len());
[INFO] [stdout] 466 | ||                             },
[INFO] [stdout] ...   ||
[INFO] [stdout] 469 | ||                             }
[INFO] [stdout] 470 | ||                         };
[INFO] [stdout]     | ||                         ^
[INFO] [stdout]     | ||_________________________|
[INFO] [stdout]     |  |_________________________unreachable expression
[INFO] [stdout]     |                            any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:477:13
[INFO] [stdout]     |
[INFO] [stdout] 477 |                return match self.children[next_cluster].search(offset) {
[INFO] [stdout]     |   _____________^______-
[INFO] [stdout]     |  |_____________|
[INFO] [stdout]     | ||
[INFO] [stdout] 478 | ||                 Some(n) => {
[INFO] [stdout] 479 | ||                     return Some(n + next_cluster*self.children.len());
[INFO] [stdout] 480 | ||                 },
[INFO] [stdout] ...   ||
[INFO] [stdout] 483 | ||                 }
[INFO] [stdout] 484 | ||             };
[INFO] [stdout]     | ||             ^
[INFO] [stdout]     | ||_____________|
[INFO] [stdout]     |  |_____________unreachable expression
[INFO] [stdout]     |                any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut reference_tree = VEBTree::new(16);
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut reference_tree = VEBTree::new(i);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lib.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             for index in 0..self_size {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |             let mut aux = Self::new(pass_size);
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let mut tree = VEBTree {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_value`
[INFO] [stdout]    --> src/lib.rs:179:22
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 Some(min_value) => (),
[INFO] [stdout]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min_val`
[INFO] [stdout]    --> src/lib.rs:384:17
[INFO] [stdout]     |
[INFO] [stdout] 384 |             let min_val = self.min?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_min_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "804b63dcc59a21c166a7cfb0a97b1e0a8b65bd5efdfea0427aee5266da0cc996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "804b63dcc59a21c166a7cfb0a97b1e0a8b65bd5efdfea0427aee5266da0cc996", kill_on_drop: false }`
[INFO] [stdout] 804b63dcc59a21c166a7cfb0a97b1e0a8b65bd5efdfea0427aee5266da0cc996