[INFO] fetching crate treez 1.6.0...
[INFO] checking treez-1.6.0 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate treez 1.6.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate treez 1.6.0 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate treez 1.6.0
[INFO] finished tweaking crates.io crate treez 1.6.0
[INFO] tweaked toml for crates.io crate treez 1.6.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aa03f7fdd9141ea96c21d55e0c01eede0685f72ac728d564f67ac599dfb625a4
[INFO] running `Command { std: "docker" "start" "-a" "aa03f7fdd9141ea96c21d55e0c01eede0685f72ac728d564f67ac599dfb625a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa03f7fdd9141ea96c21d55e0c01eede0685f72ac728d564f67ac599dfb625a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa03f7fdd9141ea96c21d55e0c01eede0685f72ac728d564f67ac599dfb625a4", kill_on_drop: false }`
[INFO] [stdout] aa03f7fdd9141ea96c21d55e0c01eede0685f72ac728d564f67ac599dfb625a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1379ee49872f87c37a58bbd2e9f7ad7257a92b18caa9371666b39ab5c1937d4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1379ee49872f87c37a58bbd2e9f7ad7257a92b18caa9371666b39ab5c1937d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking mazth v0.0.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking crossbeam-channel v0.2.6
[INFO] [stderr]     Checking crossbeam v0.4.1
[INFO] [stderr]     Checking treez v1.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/backtrack.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RefMut`
[INFO] [stdout]  --> src/treap2.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::{RefCell, RefMut};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ordering`, `self`
[INFO] [stdout]  --> src/treap2.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::cmp::{self, Ordering};
[INFO] [stdout]   |                ^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/treap2.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]   --> src/treap2.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::mem;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut`, `Deref`
[INFO] [stdout]   --> src/treap2.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]    |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::chrono::prelude::*`
[INFO] [stdout]   --> src/treap2.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use self::chrono::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/treap2.rs:681:25
[INFO] [stdout]     |
[INFO] [stdout] 681 |         let t_l = match (l) {
[INFO] [stdout]     |                         ^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/treap2.rs:690:25
[INFO] [stdout]     |
[INFO] [stdout] 690 |         let t_r = match (r) {
[INFO] [stdout]     |                         ^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Empty` is named the same as one of the variants of the type `SearchResult`
[INFO] [stdout]    --> src/treap2.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |             Empty => {
[INFO] [stdout]     |             ^^^^^ help: to match on the variant, qualify the path: `SearchResult::Empty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/segmax.rs:80:30
[INFO] [stdout]    |
[INFO] [stdout] 80 |             Some(Change::Abs(v)) => self.s.clone(),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/dsu.rs:25:34
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_new(&mut self, count: usize) -> usize {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/treap2.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 |                 let root = x.fixup_priority();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root2`
[INFO] [stdout]    --> src/treap2.rs:239:21
[INFO] [stdout]     |
[INFO] [stdout] 239 |                 let root2 = x.fixdown_priority();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_root2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/treap2.rs:261:21
[INFO] [stdout]     |
[INFO] [stdout] 261 |                 let root = child.as_ref().unwrap().fixup_priority();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Empty`
[INFO] [stdout]    --> src/treap2.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |             Empty => {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_Empty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]    --> src/treap2.rs:439:13
[INFO] [stdout]     |
[INFO] [stdout] 439 |         let mut count = 0;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_root`
[INFO] [stdout]    --> src/treap2.rs:722:22
[INFO] [stdout]     |
[INFO] [stdout] 722 |                 Some(new_root) => n.remove(),
[INFO] [stdout]     |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rb.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let mut leaf_dummy = Node {
[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/treap2.rs:438:13
[INFO] [stdout]     |
[INFO] [stdout] 438 |         let mut x = self.clone();
[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/treap2.rs:731:25
[INFO] [stdout]     |
[INFO] [stdout] 731 |     pub fn union(&self, mut other: Self) -> Self {
[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/treap2.rs:801:29
[INFO] [stdout]     |
[INFO] [stdout] 801 |     pub fn intersect(&self, mut other: Self) -> Self {
[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/treap2.rs:806:21
[INFO] [stdout]     |
[INFO] [stdout] 806 |         let (mut a, mut b) = if self.prio() < other.prio() {
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]   --> src/queue_monotone.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     data: VecDeque<(T, usize)>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `length`
[INFO] [stdout]   --> src/queue_monotone.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     length: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `auto_length`
[INFO] [stdout]   --> src/queue_monotone.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     auto_length: Option<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/queue_monotone.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn new() -> QueueMonotone<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/queue_monotone.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn push(&mut self, i: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/queue_monotone.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn pop(&mut self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max`
[INFO] [stdout]   --> src/queue_monotone.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn max(&self) -> Option<&T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/queue_monotone.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn len(&self) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_auto_len`
[INFO] [stdout]   --> src/queue_monotone.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn set_auto_len(&mut self, l: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Empty` should have a snake case name
[INFO] [stdout]    --> src/treap2.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |             Empty => {
[INFO] [stdout]     |             ^^^^^ help: convert the identifier to snake case: `empty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0170`.
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stdout] error[E0432]: unresolved imports `self::rand::distributions::IndependentSample`, `self::rand::distributions::Range`
[INFO] [stdout]  --> benches/bench_rb.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use self::rand::distributions::{IndependentSample, Range};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^^  ^^^^^ no `Range` in `distributions`
[INFO] [stdout]   |                                 |
[INFO] [stdout]   |                                 no `IndependentSample` in `distributions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::rand::Rng`
[INFO] [stdout]  --> benches/bench_rb.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use self::rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::chrono::prelude::*`
[INFO] [stdout]    --> src/rb.rs:931:5
[INFO] [stdout]     |
[INFO] [stdout] 931 | use self::chrono::prelude::*;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BTreeMap`
[INFO] [stdout]    --> src/rb.rs:937:5
[INFO] [stdout]     |
[INFO] [stdout] 937 | use std::collections::BTreeMap;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RefMut`
[INFO] [stdout]  --> src/treap2.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::{RefCell, RefMut};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/treap2.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::cmp::{self, Ordering};
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/treap2.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashMap, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]   --> src/treap2.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::mem;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DerefMut`, `Deref`
[INFO] [stdout]   --> src/treap2.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::ops::{Deref, DerefMut};
[INFO] [stdout]    |                ^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/treap2.rs:681:25
[INFO] [stdout]     |
[INFO] [stdout] 681 |         let t_l = match (l) {
[INFO] [stdout]     |                         ^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/treap2.rs:690:25
[INFO] [stdout]     |
[INFO] [stdout] 690 |         let t_r = match (r) {
[INFO] [stdout]     |                         ^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:1883:50
[INFO] [stdout]      |
[INFO] [stdout] 1883 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:1904:50
[INFO] [stdout]      |
[INFO] [stdout] 1904 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:1950:50
[INFO] [stdout]      |
[INFO] [stdout] 1950 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:1972:50
[INFO] [stdout]      |
[INFO] [stdout] 1972 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:2018:50
[INFO] [stdout]      |
[INFO] [stdout] 2018 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:2040:50
[INFO] [stdout]      |
[INFO] [stdout] 2040 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:2060:50
[INFO] [stdout]      |
[INFO] [stdout] 2060 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:2106:50
[INFO] [stdout]      |
[INFO] [stdout] 2106 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:2125:50
[INFO] [stdout]      |
[INFO] [stdout] 2125 |             .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:2267:54
[INFO] [stdout]      |
[INFO] [stdout] 2267 |                 .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]     --> src/treap2.rs:2296:54
[INFO] [stdout]      |
[INFO] [stdout] 2296 |                 .for_each(|(a, b)| assert!(equal_f32((*a as f32), *b)));
[INFO] [stdout]      |                                                      ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread_rng`
[INFO] [stdout]   --> src/queue_monotone.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | use self::rand::{thread_rng, Rng};
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `shuffle` found for struct `ThreadRng` in the current scope
[INFO] [stdout]   --> benches/bench_rb.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     rng.shuffle(&mut nums);
[INFO] [stdout]    |         ^^^^^^^ method not found in `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `treez`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `self::rand::Rng`
[INFO] [stdout]    --> src/rb.rs:935:5
[INFO] [stdout]     |
[INFO] [stdout] 935 | use self::rand::Rng;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Empty` is named the same as one of the variants of the type `SearchResult`
[INFO] [stdout]    --> src/treap2.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |             Empty => {
[INFO] [stdout]     |             ^^^^^ help: to match on the variant, qualify the path: `SearchResult::Empty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/segmax.rs:80:30
[INFO] [stdout]    |
[INFO] [stdout] 80 |             Some(Change::Abs(v)) => self.s.clone(),
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `count`
[INFO] [stdout]   --> src/dsu.rs:25:34
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn insert_new(&mut self, count: usize) -> usize {
[INFO] [stdout]    |                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/treap2.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 |                 let root = x.fixup_priority();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root2`
[INFO] [stdout]    --> src/treap2.rs:239:21
[INFO] [stdout]     |
[INFO] [stdout] 239 |                 let root2 = x.fixdown_priority();
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_root2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]    --> src/treap2.rs:261:21
[INFO] [stdout]     |
[INFO] [stdout] 261 |                 let root = child.as_ref().unwrap().fixup_priority();
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Empty`
[INFO] [stdout]    --> src/treap2.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |             Empty => {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_Empty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]    --> src/treap2.rs:439:13
[INFO] [stdout]     |
[INFO] [stdout] 439 |         let mut count = 0;
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_root`
[INFO] [stdout]    --> src/treap2.rs:722:22
[INFO] [stdout]     |
[INFO] [stdout] 722 |                 Some(new_root) => n.remove(),
[INFO] [stdout]     |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/queue_monotone.rs:131:39
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let arr: Vec<i32> = (0..100).map(|x| rng.gen_range(-1000, 1000)).collect();
[INFO] [stdout]     |                                       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rb.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let mut leaf_dummy = Node {
[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/treap2.rs:438:13
[INFO] [stdout]     |
[INFO] [stdout] 438 |         let mut x = self.clone();
[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/treap2.rs:731:25
[INFO] [stdout]     |
[INFO] [stdout] 731 |     pub fn union(&self, mut other: Self) -> Self {
[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/treap2.rs:801:29
[INFO] [stdout]     |
[INFO] [stdout] 801 |     pub fn intersect(&self, mut other: Self) -> Self {
[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/treap2.rs:806:21
[INFO] [stdout]     |
[INFO] [stdout] 806 |         let (mut a, mut b) = if self.prio() < other.prio() {
[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/treap2.rs:981:9
[INFO] [stdout]     |
[INFO] [stdout] 981 |     let mut n2 = Node {
[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/treap2.rs:990:9
[INFO] [stdout]     |
[INFO] [stdout] 990 |     let mut n3 = Node {
[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/treap2.rs:999:9
[INFO] [stdout]     |
[INFO] [stdout] 999 |     let mut n4 = Node {
[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/treap2.rs:1022:9
[INFO] [stdout]      |
[INFO] [stdout] 1022 |     let mut r0 = NodePtr(Rc::new(RefCell::new(n0)));
[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/treap2.rs:1129:29
[INFO] [stdout]      |
[INFO] [stdout] 1129 |         SearchResult::Exact(mut x) => match x.search(-10.) {
[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/treap2.rs:1191:9
[INFO] [stdout]      |
[INFO] [stdout] 1191 |     let mut n2 = Node {
[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/treap2.rs:1200:9
[INFO] [stdout]      |
[INFO] [stdout] 1200 |     let mut n3 = Node {
[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/treap2.rs:1209:9
[INFO] [stdout]      |
[INFO] [stdout] 1209 |     let mut n4 = Node {
[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/treap2.rs:1232:9
[INFO] [stdout]      |
[INFO] [stdout] 1232 |     let mut r0 = NodePtr(Rc::new(RefCell::new(n0)));
[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/treap2.rs:1252:29
[INFO] [stdout]      |
[INFO] [stdout] 1252 |         SearchResult::Exact(mut x) => {
[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/treap2.rs:1306:9
[INFO] [stdout]      |
[INFO] [stdout] 1306 |     let mut r0 = {
[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/treap2.rs:1325:13
[INFO] [stdout]      |
[INFO] [stdout] 1325 |         let mut n2 = Node {
[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/treap2.rs:1334:13
[INFO] [stdout]      |
[INFO] [stdout] 1334 |         let mut n3 = Node {
[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/treap2.rs:1343:13
[INFO] [stdout]      |
[INFO] [stdout] 1343 |         let mut n4 = Node {
[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/treap2.rs:1389:29
[INFO] [stdout]      |
[INFO] [stdout] 1389 |         SearchResult::Exact(mut x) => {
[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/treap2.rs:1450:9
[INFO] [stdout]      |
[INFO] [stdout] 1450 |     let mut t = NodePtr::new();
[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/treap2.rs:1505:9
[INFO] [stdout]      |
[INFO] [stdout] 1505 |     let mut t = NodePtr::new();
[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/treap2.rs:1561:9
[INFO] [stdout]      |
[INFO] [stdout] 1561 |     let mut t = NodePtr::new();
[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/treap2.rs:1606:9
[INFO] [stdout]      |
[INFO] [stdout] 1606 |     let mut t = NodePtr::new();
[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/treap2.rs:1654:9
[INFO] [stdout]      |
[INFO] [stdout] 1654 |     let mut t = NodePtr::new();
[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/treap2.rs:2236:13
[INFO] [stdout]      |
[INFO] [stdout] 2236 |         let mut t1: NodePtr<f32, i32> = NodePtr::new();
[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/treap2.rs:2237:13
[INFO] [stdout]      |
[INFO] [stdout] 2237 |         let mut t2 = NodePtr::new();
[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/treap2.rs:2248:13
[INFO] [stdout]      |
[INFO] [stdout] 2248 |         let mut t2 = NodePtr::new();
[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/treap2.rs:2276:13
[INFO] [stdout]      |
[INFO] [stdout] 2276 |         let mut t1 = NodePtr::new();
[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/treap2.rs:2395:13
[INFO] [stdout]      |
[INFO] [stdout] 2395 |         let mut t1: NodePtr<f32, i32> = NodePtr::new();
[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/treap2.rs:2396:13
[INFO] [stdout]      |
[INFO] [stdout] 2396 |         let mut t2 = NodePtr::new();
[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/treap2.rs:2407:13
[INFO] [stdout]      |
[INFO] [stdout] 2407 |         let mut t2 = NodePtr::new();
[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/treap2.rs:2431:13
[INFO] [stdout]      |
[INFO] [stdout] 2431 |         let mut t1 = NodePtr::new();
[INFO] [stdout]      |             ----^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `equal_f32`
[INFO] [stdout]     --> src/treap2.rs:2303:8
[INFO] [stdout]      |
[INFO] [stdout] 2303 |     fn equal_f32(a: f32, b: f32) -> bool {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `equal_f32`
[INFO] [stdout]     --> src/treap2.rs:2386:8
[INFO] [stdout]      |
[INFO] [stdout] 2386 |     fn equal_f32(a: f32, b: f32) -> bool {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `equal_f32`
[INFO] [stdout]     --> src/treap2.rs:2454:8
[INFO] [stdout]      |
[INFO] [stdout] 2454 |     fn equal_f32(a: f32, b: f32) -> bool {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `equal_f32`
[INFO] [stdout]     --> src/treap2.rs:2540:8
[INFO] [stdout]      |
[INFO] [stdout] 2540 |     fn equal_f32(a: f32, b: f32) -> bool {
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `m` should have an upper case name
[INFO] [stdout]    --> src/segsum.rs:318:11
[INFO] [stdout]     |
[INFO] [stdout] 318 |     const m: usize = 64;
[INFO] [stdout]     |           ^ help: convert the identifier to upper case: `M`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `m` should have an upper case name
[INFO] [stdout]    --> src/segmax.rs:324:11
[INFO] [stdout]     |
[INFO] [stdout] 324 |     const m: usize = 64;
[INFO] [stdout]     |           ^ help: convert the identifier to upper case: `M`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Empty` should have a snake case name
[INFO] [stdout]    --> src/treap2.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |             Empty => {
[INFO] [stdout]     |             ^^^^^ help: convert the identifier to snake case: `empty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `window` should have an upper case name
[INFO] [stdout]    --> src/queue_monotone.rs:125:11
[INFO] [stdout]     |
[INFO] [stdout] 125 |     const window: usize = 20;
[INFO] [stdout]     |           ^^^^^^ help: convert the identifier to upper case: `WINDOW`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 73 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0170`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c1379ee49872f87c37a58bbd2e9f7ad7257a92b18caa9371666b39ab5c1937d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1379ee49872f87c37a58bbd2e9f7ad7257a92b18caa9371666b39ab5c1937d4", kill_on_drop: false }`
[INFO] [stdout] c1379ee49872f87c37a58bbd2e9f7ad7257a92b18caa9371666b39ab5c1937d4
