[INFO] cloning repository https://github.com/bkusin/hive
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bkusin/hive" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbkusin%2Fhive", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbkusin%2Fhive'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f0be978c9c28b9f2cb1858fcdd070d0506f6cae
[INFO] checking bkusin/hive against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbkusin%2Fhive" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bkusin/hive
[INFO] finished tweaking git repo https://github.com/bkusin/hive
[INFO] tweaked toml for git repo https://github.com/bkusin/hive written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bkusin/hive on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bkusin/hive 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" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded random v0.14.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09
[INFO] running `Command { std: "docker" "start" "da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling crossbeam-utils v0.8.23
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.21
[INFO] [stderr]    Compiling zerocopy v0.8.57
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling shlex v2.0.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.8
[INFO] [stderr]    Compiling find-msvc-tools v0.1.12
[INFO] [stderr]    Compiling autocfg v1.5.1
[INFO] [stderr]    Compiling zmij v1.0.23
[INFO] [stderr]     Checking either v1.18.0
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling libc v0.2.189
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling cc v1.4.6
[INFO] [stderr]     Checking clap_lex v1.1.1
[INFO] [stderr]     Checking memchr v2.8.3
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking regex-syntax v0.8.11
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]     Checking anstyle v1.0.14
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking clap_builder v4.6.7
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking random v0.14.1
[INFO] [stderr]     Checking hive v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/hive.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hive.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut index = 
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/hive.rs:177:22
[INFO] [stdout]     |
[INFO] [stdout] 177 |         self.retain(|x| { false });
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/hive.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hive.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut index = 
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/hive.rs:177:22
[INFO] [stdout]     |
[INFO] [stdout] 177 |         self.retain(|x| { false });
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_CAP` is never used
[INFO] [stdout]  --> src/hive.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const DEFAULT_CAP: usize = 16;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Handle` is never constructed
[INFO] [stdout]  --> src/hive.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Handle {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Block` is never constructed
[INFO] [stdout]   --> src/hive.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Block<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `remove`, `get`, and `get_mut` are never used
[INFO] [stdout]   --> src/hive.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl<T> Block<T> {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 26 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn insert(&mut self, value: T) -> usize {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn remove(&mut self, index: usize) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn get(&self, index: usize) -> Option<&T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 88 |     fn get_mut(&mut self, index: usize) -> Option<&mut T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Hive` is never constructed
[INFO] [stdout]    --> src/hive.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub struct Hive<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/hive.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 106 | impl<T> Hive<T> {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 107 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn with_capacity() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn insert(&mut self, value: T) -> Handle {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 139 |     pub fn remove(&mut self, handle: Handle) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn get(&self, handle: Handle) -> Option<&T> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 152 |     pub fn get_mut(&mut self, handle: Handle) -> Option<&mut T> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 160 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 168 |     pub fn capacity(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 172 |     pub fn drain() {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     pub fn clear(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 182 |     pub fn shrink() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 |     pub fn retain<F>(&mut self, mut f: F)
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 204 |     pub fn iter<'a>(&'a self) -> HiveIterator<'a, T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HiveIterator` is never constructed
[INFO] [stdout]    --> src/hive.rs:229:12
[INFO] [stdout]     |
[INFO] [stdout] 229 | pub struct HiveIterator<'a, T> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rayon v1.12.0
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling syn v3.0.5
[INFO] [stderr]    Compiling alloca v0.4.0
[INFO] [stderr]     Checking regex-automata v0.4.18
[INFO] [stderr]     Checking criterion-plot v0.8.2
[INFO] [stderr]     Checking page_size v0.6.0
[INFO] [stderr]     Checking clap v4.6.7
[INFO] [stderr]     Checking regex v1.13.1
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling zerocopy-derive v0.8.57
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking half v2.7.1
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking criterion v0.8.2
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> benches/benchmark.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     for i in 0..16 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> benches/benchmark.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     for i in 0..16 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_benchmark` is never used
[INFO] [stdout]   --> benches/benchmark.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn get_benchmark(c: &mut Criterion) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_benchmark` is never used
[INFO] [stdout]   --> benches/benchmark.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn iter_benchmark(c: &mut Criterion) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_with_holes_benchmark` is never used
[INFO] [stdout]   --> benches/benchmark.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn iter_with_holes_benchmark(c: &mut Criterion) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hive.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut index = 
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/hive.rs:177:22
[INFO] [stdout]     |
[INFO] [stdout] 177 |         self.retain(|x| { false });
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hive`
[INFO] [stdout]    --> src/hive.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let hive: Hive<i32> = Hive::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_hive`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> src/hive.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let handle = hive.insert(s);  // move string
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hive.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut index = 
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/hive.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/hive.rs:177:22
[INFO] [stdout]     |
[INFO] [stdout] 177 |         self.retain(|x| { false });
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hive`
[INFO] [stdout]    --> src/hive.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let hive: Hive<i32> = Hive::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_hive`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]    --> src/hive.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let handle = hive.insert(s);  // move string
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `with_capacity`, `drain`, and `shrink` are never used
[INFO] [stdout]    --> src/hive.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 106 | impl<T> Hive<T> {
[INFO] [stdout]     | --------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn with_capacity() -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 172 |     pub fn drain() {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 182 |     pub fn shrink() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.17s
[INFO] running `Command { std: "docker" "inspect" "da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09", kill_on_drop: false }`
[INFO] [stdout] da1b89ccfa223b6614ac4c8835f9a5e2b91ed1c86a163c74ea0ec4257c5c1b09
