[INFO] fetching crate fibre 0.5.0...
[INFO] testing fibre-0.5.0 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate fibre 0.5.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate fibre 0.5.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate fibre 0.5.0
[INFO] tweaked toml for crates.io crate fibre 0.5.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fibre 0.5.0 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fibre 0.5.0 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sdd v3.0.8
[INFO] [stderr]   Downloaded bench_matrix v0.2.0
[INFO] [stderr]   Downloaded scc v2.3.4
[INFO] [stderr]   Downloaded seize v0.5.0
[INFO] [stderr]   Downloaded papaya v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a97009d9635ac74f96d7683efe8cdc7ca0c9bb3aab53f3f62b7a4d4a6e7eb912
[INFO] running `Command { std: "docker" "start" "-a" "a97009d9635ac74f96d7683efe8cdc7ca0c9bb3aab53f3f62b7a4d4a6e7eb912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a97009d9635ac74f96d7683efe8cdc7ca0c9bb3aab53f3f62b7a4d4a6e7eb912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a97009d9635ac74f96d7683efe8cdc7ca0c9bb3aab53f3f62b7a4d4a6e7eb912", kill_on_drop: false }`
[INFO] [stdout] a97009d9635ac74f96d7683efe8cdc7ca0c9bb3aab53f3f62b7a4d4a6e7eb912
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef935cce0001611282a8799cabe09d85b450e7d78f6628b7cc005bd58ba4e8ed
[INFO] running `Command { std: "docker" "start" "-a" "ef935cce0001611282a8799cabe09d85b450e7d78f6628b7cc005bd58ba4e8ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.173
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling slab v0.4.10
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling seize v0.5.0
[INFO] [stderr]    Compiling papaya v0.2.1
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling fibre v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `impl_error_with_inner`
[INFO] [stdout]  --> src/error.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! impl_error_with_inner {
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RecvErrorTimeout`, `SendError`, `TryRecvError`, and `TrySendError`
[INFO] [stdout]  --> src/spsc/shared.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::error::{RecvError, RecvErrorTimeout, SendError, TryRecvError, TrySendError};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/spsc/shared.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/spsc/shared.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/spsc/shared.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::thread::{self, Thread};
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration` and `Instant`
[INFO] [stdout]   --> src/spsc/shared.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> src/mpsc/unbounded.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryRecvError`
[INFO] [stdout]  --> src/mpmc/async_impl.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::error::{SendError, TryRecvError, TrySendError};
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::future::PollFn`
[INFO] [stdout]   --> src/mpmc/core.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::future::PollFn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOC_C_RECV` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const LOC_C_RECV: &str = "Receiver::recv";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EVT_P_ENTER_LOOP` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const EVT_P_ENTER_LOOP: &str = "P:EnterLoop";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EVT_P_GOT_MIN_TAIL` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const EVT_P_GOT_MIN_TAIL: &str = "P:GotMinTail";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `capacity` and `is_empty` are never used
[INFO] [stdout]    --> src/spmc/topic/mailbox.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 97  | impl<T> MailboxProducer<T> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 126 |   pub(crate) fn capacity(&self) -> usize {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |   pub(crate) fn is_empty(&self) -> bool {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AlignedInner128` is never constructed
[INFO] [stdout]   --> src/internal/cache_padded.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct AlignedInner128<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `park_thread_timeout_cond` is never used
[INFO] [stdout]   --> src/sync_util.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn park_thread_timeout_cond<F>(timeout: Option<Duration>, stop_condition: F)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 6.97s
[INFO] running `Command { std: "docker" "inspect" "ef935cce0001611282a8799cabe09d85b450e7d78f6628b7cc005bd58ba4e8ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef935cce0001611282a8799cabe09d85b450e7d78f6628b7cc005bd58ba4e8ed", kill_on_drop: false }`
[INFO] [stdout] ef935cce0001611282a8799cabe09d85b450e7d78f6628b7cc005bd58ba4e8ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a4fb7ce97bf649f6892deed5510c81ab3ebb39abcdf9ed2f283cb6f615f1cae
[INFO] running `Command { std: "docker" "start" "-a" "6a4fb7ce97bf649f6892deed5510c81ab3ebb39abcdf9ed2f283cb6f615f1cae", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling getrandom v0.3.3
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[INFO] [stderr]    Compiling syn v2.0.103
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[INFO] [stderr]    Compiling clap_builder v4.5.40
[INFO] [stderr]    Compiling rand_core v0.9.3
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[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling itertools v0.10.5
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[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stderr]    Compiling sdd v3.0.8
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling scc v2.3.4
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling clap v4.5.40
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.1
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling fibre v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `impl_error_with_inner`
[INFO] [stdout]  --> src/error.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! impl_error_with_inner {
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RecvErrorTimeout`, `SendError`, `TryRecvError`, and `TrySendError`
[INFO] [stdout]  --> src/spsc/shared.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::error::{RecvError, RecvErrorTimeout, SendError, TryRecvError, TrySendError};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/spsc/shared.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/spsc/shared.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/spsc/shared.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::thread::{self, Thread};
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration` and `Instant`
[INFO] [stdout]   --> src/spsc/shared.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> src/mpsc/unbounded.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryRecvError`
[INFO] [stdout]  --> src/mpmc/async_impl.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::error::{SendError, TryRecvError, TrySendError};
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::future::PollFn`
[INFO] [stdout]   --> src/mpmc/core.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::future::PollFn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOC_C_RECV` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const LOC_C_RECV: &str = "Receiver::recv";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EVT_P_ENTER_LOOP` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const EVT_P_ENTER_LOOP: &str = "P:EnterLoop";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EVT_P_GOT_MIN_TAIL` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const EVT_P_GOT_MIN_TAIL: &str = "P:GotMinTail";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `capacity` and `is_empty` are never used
[INFO] [stdout]    --> src/spmc/topic/mailbox.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 97  | impl<T> MailboxProducer<T> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 126 |   pub(crate) fn capacity(&self) -> usize {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |   pub(crate) fn is_empty(&self) -> bool {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AlignedInner128` is never constructed
[INFO] [stdout]   --> src/internal/cache_padded.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct AlignedInner128<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `park_thread_timeout_cond` is never used
[INFO] [stdout]   --> src/sync_util.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn park_thread_timeout_cond<F>(timeout: Option<Duration>, stop_condition: F)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling serial_test_derive v3.2.0
[INFO] [stderr]    Compiling serial_test v3.2.0
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling bench_matrix v0.2.0
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/spsc.rs:48:14
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let (tx, mut rx) = spsc::bounded_async::<String>(capacity);
[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]   --> examples/spsc.rs:82:10
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let (mut tx_s, rx_s) = spsc::bounded_sync::<String>(capacity);
[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]   --> examples/spsc.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mut rx_a = rx_s.to_async();
[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]   --> examples/spsc.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let (mut tx, mut rx) = spsc::bounded_sync::<String>(capacity);
[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]   --> examples/spsc.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let (mut tx, mut rx) = spsc::bounded_sync::<String>(capacity);
[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]    --> examples/spsc.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |     let mut rx_s = rx_a.to_sync();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cvar`
[INFO] [stdout]    --> tests/spmc_repro.rs:119:16
[INFO] [stdout]     |
[INFO] [stdout] 119 |     let (lock, cvar) = &*timeout_signal;
[INFO] [stdout]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_cvar`
[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]   --> tests/spmc_repro.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (mut tx, rx_orig) = spmc::bounded(capacity);
[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]   --> tests/spmc_repro.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 |       let mut rx_clone = rx_orig.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]    --> tests/spmc_repro.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let mut timed_out = *lock.lock().unwrap();
[INFO] [stdout]     |         ----^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryRecvError`
[INFO] [stdout]  --> tests/topic_spmc_async.rs:6:42
[INFO] [stdout]   |
[INFO] [stdout] 6 | use fibre::error::{RecvError, SendError, TryRecvError};
[INFO] [stdout]   |                                          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> tests/topic_spmc_async.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SendError`
[INFO] [stdout]  --> examples/spmc.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fibre::error::{RecvError, SendError};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicUsize`, `Ordering`, and `sync::Arc`
[INFO] [stdout]  --> examples/spmc.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 |   sync::atomic::{AtomicUsize, Ordering},
[INFO] [stdout]   |                  ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 6 |   sync::Arc,
[INFO] [stdout]   |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SendError`
[INFO] [stdout]  --> examples/mpsc.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fibre::error::{RecvError, SendError};
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> tests/spmc_sync.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let (mut tx, mut rx) = spmc::bounded(2);
[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]  --> tests/spmc_sync.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let (mut tx, mut rx) = spmc::bounded(2);
[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]   --> tests/spmc_sync.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |   let (mut tx, mut rx) = spmc::bounded::<i32>(2);
[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]   --> tests/spmc_sync.rs:16:16
[INFO] [stdout]    |
[INFO] [stdout] 16 |   let (mut tx, mut rx) = spmc::bounded::<i32>(2);
[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]   --> tests/spmc_sync.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |   let (mut tx, mut rx1) = spmc::bounded(ITEMS_LOW);
[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]   --> tests/spmc_sync.rs:25:16
[INFO] [stdout]    |
[INFO] [stdout] 25 |   let (mut tx, mut rx1) = spmc::bounded(ITEMS_LOW);
[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]   --> tests/spmc_sync.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 |   let mut rx2 = rx1.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]   --> tests/spmc_sync.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 |   let mut rx3 = rx1.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]   --> tests/spmc_sync.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |   let (mut tx, mut rx_fast) = spmc::bounded(1); // Capacity of 1
[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]   --> tests/spmc_sync.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 |   let (mut tx, mut rx_fast) = spmc::bounded(1); // Capacity of 1
[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]   --> tests/spmc_sync.rs:57:7
[INFO] [stdout]    |
[INFO] [stdout] 57 |   let mut rx_slow = rx_fast.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]   --> tests/spmc_sync.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 |   let (mut tx, rx) = spmc::bounded(2);
[INFO] [stdout]    |        ----^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_HIGH` is never used
[INFO] [stdout]  --> tests/common/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const ITEMS_HIGH: usize = 1000;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `producer_task_handle`
[INFO] [stdout]    --> examples/spmc.rs:161:9
[INFO] [stdout]     |
[INFO] [stdout] 161 |     let producer_task_handle = common_async::block_on_tokio_task(async move {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_producer_task_handle`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> examples/oneshot.rs:145:7
[INFO] [stdout]     |
[INFO] [stdout] 141 |       Err(RecvError::Disconnected) => {
[INFO] [stdout]     |       ---------------------------- matches all the relevant values
[INFO] [stdout] ...
[INFO] [stdout] 145 |       Err(e) => panic!("Unexpected error: {:?}", e),
[INFO] [stdout]     |       ^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/oneshot.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[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]   --> examples/oneshot.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[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]   --> examples/oneshot.rs:71:14
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[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]    --> examples/oneshot.rs:138:14
[INFO] [stdout]     |
[INFO] [stdout] 138 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[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]    --> examples/oneshot.rs:104:26
[INFO] [stdout]     |
[INFO] [stdout] 104 |   let (tx_async_to_sync, mut rx_async_for_sync) = oneshot::oneshot::<String>();
[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]   --> examples/spmc.rs:65:10
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let (mut tx, rx1_orig) = spmc::bounded_async::<String>(capacity);
[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]   --> examples/spmc.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let mut rx1 = rx1_orig.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]   --> examples/spmc.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let mut rx2 = rx1_orig.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]    --> examples/spmc.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut tx_sync_converted = tx_async.to_sync(); // Convert producer
[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]    --> examples/spmc.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let mut rx_async1 = rx_async1_orig.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]    --> examples/spmc.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |     let mut rx_async2 = rx_async1_orig.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]    --> examples/spmc.rs:162:11
[INFO] [stdout]     |
[INFO] [stdout] 162 |       let mut tx_async_local = tx_async; // Avoid capturing the original tx_async if it's used elsewhere
[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]   --> examples/spmc.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let (mut tx, rx1_orig) = spmc::bounded::<String>(capacity);
[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]   --> examples/spmc.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut rx1 = rx1_orig.clone(); // Keep original alive for other clones
[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]   --> examples/spmc.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut rx2 = rx1_orig.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]    --> examples/spmc.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |     let mut rx_sync1 = rx_async1_orig.clone().to_sync(); // Convert receivers
[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]    --> examples/spmc.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |     let mut rx_sync2 = rx_async1_orig.to_sync();
[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]   --> tests/spmc_async.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |   let (mut tx, rx) = spmc::bounded_async(2);
[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]   --> tests/spmc_async.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |   let (mut tx, rx) = spmc::bounded_async::<i32>(2);
[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]   --> tests/mpsc_sync.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |   let (tx, mut rx) = mpsc::unbounded_async();
[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]   --> tests/mpsc_sync.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |   let (tx, mut rx) = mpsc::unbounded_async();
[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]   --> tests/mpsc_sync.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |   let (tx, mut rx) = mpsc::unbounded_async::<()>();
[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]   --> tests/spmc_async.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |   let (mut tx, rx1) = spmc::bounded_async(ITEMS_LOW);
[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]   --> examples/mpsc.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let (tx, mut rx) = mpsc::unbounded_async::<String>();
[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]   --> tests/mpsc_sync.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |   let (tx, mut rx) = mpsc::unbounded_async();
[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]    --> tests/mpsc_sync.rs:104:18
[INFO] [stdout]     |
[INFO] [stdout] 104 |   let (tx_async, mut rx_async) = mpsc::unbounded_async();
[INFO] [stdout]     |                  ----^^^^^^^^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_LOW` is never used
[INFO] [stdout]  --> tests/common/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ITEMS_LOW: usize = 50;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_LOW` is never used
[INFO] [stdout]  --> tests/common/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ITEMS_LOW: usize = 50;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/mpsc.rs:99:20
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let (tx_async, mut rx_async) = mpsc::unbounded_async::<String>(); // Start with async channel
[INFO] [stdout]    |                    ----^^^^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_LOW` is never used
[INFO] [stdout]  --> tests/common/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ITEMS_LOW: usize = 50;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/mpsc.rs:16:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let (tx, mut rx) = mpsc::unbounded::<String>();
[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]    --> examples/mpsc.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let mut rx_sync = rx_async.to_sync(); // Convert receiver
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SHORT_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const SHORT_TIMEOUT: Duration = Duration::from_millis(500);
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_LOW` is never used
[INFO] [stdout]  --> tests/common/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ITEMS_LOW: usize = 50;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_LOW` is never used
[INFO] [stdout]  --> tests/common/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ITEMS_LOW: usize = 50;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_HIGH` is never used
[INFO] [stdout]  --> tests/common/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const ITEMS_HIGH: usize = 1000;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/spmc_async.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |   let (mut tx, rx_fast) = spmc::bounded_async(1);
[INFO] [stdout]    |        ----^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_HIGH` is never used
[INFO] [stdout]  --> tests/common/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const ITEMS_HIGH: usize = 1000;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]  --> tests/common/mod.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]   |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_LOW` is never used
[INFO] [stdout]  --> tests/common/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ITEMS_LOW: usize = 50;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_HIGH` is never used
[INFO] [stdout]  --> tests/common/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub const ITEMS_HIGH: usize = 1000;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `impl_error_with_inner`
[INFO] [stdout]  --> src/error.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | macro_rules! impl_error_with_inner {
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RecvErrorTimeout`, `SendError`, `TryRecvError`, and `TrySendError`
[INFO] [stdout]  --> src/spsc/shared.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::error::{RecvError, RecvErrorTimeout, SendError, TryRecvError, TrySendError};
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/spsc/shared.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/spsc/shared.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/spsc/shared.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::thread::{self, Thread};
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration` and `Instant`
[INFO] [stdout]   --> src/spsc/shared.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]   --> src/mpsc/unbounded.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryRecvError`
[INFO] [stdout]  --> src/mpmc/async_impl.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::error::{SendError, TryRecvError, TrySendError};
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::future::PollFn`
[INFO] [stdout]   --> src/mpmc/core.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::future::PollFn;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/oneshot/tests.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |   let (tx, mut rx) = oneshot::<String>();
[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/oneshot/tests.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |   let (tx, mut rx) = oneshot::<i32>();
[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/oneshot/tests.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |   let (tx, mut rx) = oneshot::<i32>();
[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/oneshot/tests.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |   let (tx1, mut rx) = oneshot::<i32>();
[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/oneshot/tests.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |   let (tx1, mut rx) = oneshot::<i32>();
[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/oneshot/tests.rs:120:14
[INFO] [stdout]     |
[INFO] [stdout] 120 |     let (tx, mut rx) = oneshot::<DroppableVal>();
[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/oneshot/tests.rs:161:13
[INFO] [stdout]     |
[INFO] [stdout] 161 |   let (tx1, mut rx1) = oneshot::<i32>();
[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/oneshot/tests.rs:162:14
[INFO] [stdout]     |
[INFO] [stdout] 162 |   let (_tx2, mut rx2) = oneshot::<i32>(); // This one won't receive anything
[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/oneshot/tests.rs:187:17
[INFO] [stdout]     |
[INFO] [stdout] 187 |   let (tx_orig, mut rx) = oneshot::<()>();
[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/oneshot/tests.rs:205:12
[INFO] [stdout]     |
[INFO] [stdout] 205 |   let (tx, mut rx) = oneshot::<i32>();
[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/oneshot/tests.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |   let (tx1, mut rx) = oneshot::<i32>();
[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/spsc/bounded_async.rs:451:13
[INFO] [stdout]     |
[INFO] [stdout] 451 |     let (p, mut c) = bounded_async(1);
[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/spsc/bounded_async.rs:468:13
[INFO] [stdout]     |
[INFO] [stdout] 468 |     let (p, mut c) = bounded_async::<i32>(1);
[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/spsc/bounded_async.rs:494:13
[INFO] [stdout]     |
[INFO] [stdout] 494 |     let (p, mut c) = bounded_async::<i32>(1);
[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/spsc/bounded_async.rs:528:13
[INFO] [stdout]     |
[INFO] [stdout] 528 |     let (p, mut c) = bounded_async::<i32>(1);
[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/spsc/bounded_async.rs:555:13
[INFO] [stdout]     |
[INFO] [stdout] 555 |     let (p, mut c) = bounded_async::<i32>(1);
[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/spsc/bounded_async.rs:570:13
[INFO] [stdout]     |
[INFO] [stdout] 570 |     let (p, mut c) = bounded_async::<i32>(1);
[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/spsc/bounded_async.rs:592:14
[INFO] [stdout]     |
[INFO] [stdout] 592 |     let (p1, mut c1) = bounded_async::<i32>(1);
[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/spsc/bounded_async.rs:593:15
[INFO] [stdout]     |
[INFO] [stdout] 593 |     let (_p2, mut c2) = bounded_async::<i32>(1); // This consumer will never receive
[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/spsc/bounded_async.rs:615:22
[INFO] [stdout]     |
[INFO] [stdout] 615 |     let (p_can_send, mut c_can_send) = bounded_async::<i32>(1);
[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/spsc/bounded_async.rs:645:9
[INFO] [stdout]     |
[INFO] [stdout] 645 |     let mut sync_p = BoundedSyncSender::from_shared(core_shared.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/spsc/bounded_async.rs:688:9
[INFO] [stdout]     |
[INFO] [stdout] 688 |     let mut sync_c = BoundedSyncReceiver::from_shared(core_shared);
[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/spsc/bounded_async.rs:749:13
[INFO] [stdout]     |
[INFO] [stdout] 749 |     let (p, mut c) = bounded_async::<i32>(1);
[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/spsc/bounded_sync.rs:553:10
[INFO] [stdout]     |
[INFO] [stdout] 553 |     let (mut p, mut c) = bounded_sync(1);
[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/spsc/bounded_sync.rs:553:17
[INFO] [stdout]     |
[INFO] [stdout] 553 |     let (mut p, mut c) = bounded_sync(1);
[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/spsc/bounded_sync.rs:572:10
[INFO] [stdout]     |
[INFO] [stdout] 572 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:572:17
[INFO] [stdout]     |
[INFO] [stdout] 572 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:596:13
[INFO] [stdout]     |
[INFO] [stdout] 596 |     let (p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:616:10
[INFO] [stdout]     |
[INFO] [stdout] 616 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:616:17
[INFO] [stdout]     |
[INFO] [stdout] 616 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:634:10
[INFO] [stdout]     |
[INFO] [stdout] 634 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:634:17
[INFO] [stdout]     |
[INFO] [stdout] 634 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:649:13
[INFO] [stdout]     |
[INFO] [stdout] 649 |     let (p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:661:10
[INFO] [stdout]     |
[INFO] [stdout] 661 |     let (mut p, c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:675:10
[INFO] [stdout]     |
[INFO] [stdout] 675 |     let (mut p, mut c) = bounded_sync(CAPACITY);
[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/spsc/bounded_sync.rs:675:17
[INFO] [stdout]     |
[INFO] [stdout] 675 |     let (mut p, mut c) = bounded_sync(CAPACITY);
[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/spsc/bounded_sync.rs:696:10
[INFO] [stdout]     |
[INFO] [stdout] 696 |     let (mut p, c) = bounded_sync::<i32>(5);
[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/spsc/bounded_sync.rs:708:10
[INFO] [stdout]     |
[INFO] [stdout] 708 |     let (mut p, mut c) = bounded_sync::<i32>(5);
[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/spsc/bounded_sync.rs:708:17
[INFO] [stdout]     |
[INFO] [stdout] 708 |     let (mut p, mut c) = bounded_sync::<i32>(5);
[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/spsc/bounded_sync.rs:722:13
[INFO] [stdout]     |
[INFO] [stdout] 722 |     let (p, mut c) = bounded_sync::<i32>(5);
[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/spsc/bounded_sync.rs:745:12
[INFO] [stdout]     |
[INFO] [stdout] 745 |       let (mut p, mut c) = bounded_sync::<Droppable>(2);
[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/spsc/bounded_sync.rs:745:19
[INFO] [stdout]     |
[INFO] [stdout] 745 |       let (mut p, mut c) = bounded_sync::<Droppable>(2);
[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/spsc/bounded_sync.rs:769:12
[INFO] [stdout]     |
[INFO] [stdout] 769 |       let (mut p, c) = bounded_sync::<Droppable>(2);
[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/spsc/bounded_sync.rs:779:12
[INFO] [stdout]     |
[INFO] [stdout] 779 |       let (mut p, c) = bounded_sync::<Droppable>(1);
[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/spsc/bounded_sync.rs:796:10
[INFO] [stdout]     |
[INFO] [stdout] 796 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:817:10
[INFO] [stdout]     |
[INFO] [stdout] 817 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[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/spsc/bounded_sync.rs:829:10
[INFO] [stdout]     |
[INFO] [stdout] 829 |     let (mut p, c) = bounded_sync::<i32>(5);
[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/spmc/mod.rs:196:10
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let (mut tx, rx) = bounded(2);
[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/spmc/mod.rs:219:10
[INFO] [stdout]     |
[INFO] [stdout] 219 |     let (mut tx, rx1) = bounded(4);
[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/spmc/mod.rs:265:10
[INFO] [stdout]     |
[INFO] [stdout] 265 |     let (mut tx, rx1) = bounded(1);
[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/spmc/mod.rs:294:10
[INFO] [stdout]     |
[INFO] [stdout] 294 |     let (mut tx, rx1) = bounded(ITEMS_LOW);
[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/spmc/mod.rs:327:10
[INFO] [stdout]     |
[INFO] [stdout] 327 |     let (mut tx, rx_fast) = bounded(1); // Capacity of 1
[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/spmc/mod.rs:369:10
[INFO] [stdout]     |
[INFO] [stdout] 369 |     let (mut tx, rx) = bounded(2);
[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/spmc/mod.rs:406:8
[INFO] [stdout]     |
[INFO] [stdout] 406 |   let (mut tx, rx1) = bounded(2);
[INFO] [stdout]     |        ----^^
[INFO] [stdout]     |        |
[INFO] [stdout]     |        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `DROP_COUNT` is never used
[INFO] [stdout]    --> src/spsc/bounded_sync.rs:733:12
[INFO] [stdout]     |
[INFO] [stdout] 733 |     static DROP_COUNT: AtomicUsize = AtomicUsize::new(0);
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/spsc/bounded_sync.rs:735:22
[INFO] [stdout]     |
[INFO] [stdout] 735 |     struct Droppable(usize, Arc<AtomicUsize>);
[INFO] [stdout]     |            --------- ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Droppable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 735 -     struct Droppable(usize, Arc<AtomicUsize>);
[INFO] [stdout] 735 +     struct Droppable((), Arc<AtomicUsize>);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LOC_C_RECV` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const LOC_C_RECV: &str = "Receiver::recv";
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EVT_P_ENTER_LOOP` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const EVT_P_ENTER_LOOP: &str = "P:EnterLoop";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EVT_P_GOT_MIN_TAIL` is never used
[INFO] [stdout]   --> src/spmc/ring_buffer.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const EVT_P_GOT_MIN_TAIL: &str = "P:GotMinTail";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `capacity` and `is_empty` are never used
[INFO] [stdout]    --> src/spmc/topic/mailbox.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 97  | impl<T> MailboxProducer<T> {
[INFO] [stdout]     | -------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 126 |   pub(crate) fn capacity(&self) -> usize {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |   pub(crate) fn is_empty(&self) -> bool {
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stdout]    --> src/spmc/mod.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |   pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stdout]    --> src/spmc/mod.rs:189:13
[INFO] [stdout]     |
[INFO] [stdout] 189 |   pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stdout]    --> src/spmc/mod.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |   pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ITEMS_HIGH` is never used
[INFO] [stdout]    --> src/spmc/mod.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 |   pub const ITEMS_HIGH: usize = 1000;
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AlignedInner128` is never constructed
[INFO] [stdout]   --> src/internal/cache_padded.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct AlignedInner128<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/internal/cache_padded.rs:120:19
[INFO] [stdout]     |
[INFO] [stdout] 120 |     struct MyData(u64);
[INFO] [stdout]     |            ------ ^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `MyData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `park_thread_timeout_cond` is never used
[INFO] [stdout]   --> src/sync_util.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn park_thread_timeout_cond<F>(timeout: Option<Duration>, stop_condition: F)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 3m 05s
[INFO] running `Command { std: "docker" "inspect" "6a4fb7ce97bf649f6892deed5510c81ab3ebb39abcdf9ed2f283cb6f615f1cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a4fb7ce97bf649f6892deed5510c81ab3ebb39abcdf9ed2f283cb6f615f1cae", kill_on_drop: false }`
[INFO] [stdout] 6a4fb7ce97bf649f6892deed5510c81ab3ebb39abcdf9ed2f283cb6f615f1cae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dd12b9e586b0b2173195b23c4dc5f4392ea1c4b9b11cbf49707acefb4274f5d2
[INFO] running `Command { std: "docker" "start" "-a" "dd12b9e586b0b2173195b23c4dc5f4392ea1c4b9b11cbf49707acefb4274f5d2", kill_on_drop: false }`
[INFO] [stderr] warning: unused macro definition: `impl_error_with_inner`
[INFO] [stderr]  --> src/error.rs:6:14
[INFO] [stderr]   |
[INFO] [stderr] 6 | macro_rules! impl_error_with_inner {
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `RecvErrorTimeout`, `SendError`, `TryRecvError`, and `TrySendError`
[INFO] [stderr]  --> src/spsc/shared.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::error::{RecvError, RecvErrorTimeout, SendError, TryRecvError, TrySendError};
[INFO] [stderr]   |                               ^^^^^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]  --> src/spsc/shared.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::marker::PhantomData;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]   --> src/spsc/shared.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::sync::Arc;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]   --> src/spsc/shared.rs:13:19
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::thread::{self, Thread};
[INFO] [stderr]    |                   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Duration` and `Instant`
[INFO] [stderr]   --> src/spsc/shared.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::time::{Duration, Instant};
[INFO] [stderr]    |                 ^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]   --> src/mpsc/unbounded.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::marker::PhantomData;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TryRecvError`
[INFO] [stderr]  --> src/mpmc/async_impl.rs:8:31
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::error::{SendError, TryRecvError, TrySendError};
[INFO] [stderr]   |                               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::future::PollFn`
[INFO] [stderr]   --> src/mpmc/core.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | use core::future::PollFn;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LOC_C_RECV` is never used
[INFO] [stderr]   --> src/spmc/ring_buffer.rs:26:7
[INFO] [stderr]    |
[INFO] [stderr] 26 | const LOC_C_RECV: &str = "Receiver::recv";
[INFO] [stderr]    |       ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `EVT_P_ENTER_LOOP` is never used
[INFO] [stderr]   --> src/spmc/ring_buffer.rs:31:7
[INFO] [stderr]    |
[INFO] [stderr] 31 | const EVT_P_ENTER_LOOP: &str = "P:EnterLoop";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `EVT_P_GOT_MIN_TAIL` is never used
[INFO] [stderr]   --> src/spmc/ring_buffer.rs:32:7
[INFO] [stderr]    |
[INFO] [stderr] 32 | const EVT_P_GOT_MIN_TAIL: &str = "P:GotMinTail";
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `capacity` and `is_empty` are never used
[INFO] [stderr]    --> src/spmc/topic/mailbox.rs:126:17
[INFO] [stderr]     |
[INFO] [stderr] 97  | impl<T> MailboxProducer<T> {
[INFO] [stderr]     | -------------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 126 |   pub(crate) fn capacity(&self) -> usize {
[INFO] [stderr]     |                 ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 131 |   pub(crate) fn is_empty(&self) -> bool {
[INFO] [stderr]     |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `AlignedInner128` is never constructed
[INFO] [stderr]   --> src/internal/cache_padded.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | struct AlignedInner128<T> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `park_thread_timeout_cond` is never used
[INFO] [stderr]   --> src/sync_util.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn park_thread_timeout_cond<F>(timeout: Option<Duration>, stop_condition: F)
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fibre` (lib) generated 15 warnings (run `cargo fix --lib -p fibre` to apply 8 suggestions)
[INFO] [stderr] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stderr]  --> tests/common/mod.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stderr]   |           ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stderr]  --> tests/common/mod.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stderr]   |           ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ITEMS_LOW` is never used
[INFO] [stderr]  --> tests/common/mod.rs:6:11
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const ITEMS_LOW: usize = 50;
[INFO] [stderr]   |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/oneshot/tests.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |   let (tx, mut rx) = oneshot::<String>();
[INFO] [stderr]    |            ----^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/oneshot/tests.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |   let (tx, mut rx) = oneshot::<i32>();
[INFO] [stderr]    |            ----^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/oneshot/tests.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 |   let (tx, mut rx) = oneshot::<i32>();
[INFO] [stderr]    |            ----^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/oneshot/tests.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |   let (tx1, mut rx) = oneshot::<i32>();
[INFO] [stderr]    |             ----^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/oneshot/tests.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |   let (tx1, mut rx) = oneshot::<i32>();
[INFO] [stderr]    |             ----^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/oneshot/tests.rs:120:14
[INFO] [stderr]     |
[INFO] [stderr] 120 |     let (tx, mut rx) = oneshot::<DroppableVal>();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/oneshot/tests.rs:161:13
[INFO] [stderr]     |
[INFO] [stderr] 161 |   let (tx1, mut rx1) = oneshot::<i32>();
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/oneshot/tests.rs:162:14
[INFO] [stderr]     |
[INFO] [stderr] 162 |   let (_tx2, mut rx2) = oneshot::<i32>(); // This one won't receive anything
[INFO] [stderr]     |              ----^^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/oneshot/tests.rs:187:17
[INFO] [stderr]     |
[INFO] [stderr] 187 |   let (tx_orig, mut rx) = oneshot::<()>();
[INFO] [stderr]     |                 ----^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/oneshot/tests.rs:205:12
[INFO] [stderr]     |
[INFO] [stderr] 205 |   let (tx, mut rx) = oneshot::<i32>();
[INFO] [stderr]     |            ----^^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/oneshot/tests.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |   let (tx1, mut rx) = oneshot::<i32>();
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:451:13
[INFO] [stderr]     |
[INFO] [stderr] 451 |     let (p, mut c) = bounded_async(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:468:13
[INFO] [stderr]     |
[INFO] [stderr] 468 |     let (p, mut c) = bounded_async::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:494:13
[INFO] [stderr]     |
[INFO] [stderr] 494 |     let (p, mut c) = bounded_async::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:528:13
[INFO] [stderr]     |
[INFO] [stderr] 528 |     let (p, mut c) = bounded_async::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:555:13
[INFO] [stderr]     |
[INFO] [stderr] 555 |     let (p, mut c) = bounded_async::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:570:13
[INFO] [stderr]     |
[INFO] [stderr] 570 |     let (p, mut c) = bounded_async::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:592:14
[INFO] [stderr]     |
[INFO] [stderr] 592 |     let (p1, mut c1) = bounded_async::<i32>(1);
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:593:15
[INFO] [stderr]     |
[INFO] [stderr] 593 |     let (_p2, mut c2) = bounded_async::<i32>(1); // This consumer will never receive
[INFO] [stderr]     |               ----^^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:615:22
[INFO] [stderr]     |
[INFO] [stderr] 615 |     let (p_can_send, mut c_can_send) = bounded_async::<i32>(1);
[INFO] [stderr]     |                      ----^^^^^^^^^^
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:645:9
[INFO] [stderr]     |
[INFO] [stderr] 645 |     let mut sync_p = BoundedSyncSender::from_shared(core_shared.clone());
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:688:9
[INFO] [stderr]     |
[INFO] [stderr] 688 |     let mut sync_c = BoundedSyncReceiver::from_shared(core_shared);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_async.rs:749:13
[INFO] [stderr]     |
[INFO] [stderr] 749 |     let (p, mut c) = bounded_async::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:553:10
[INFO] [stderr]     |
[INFO] [stderr] 553 |     let (mut p, mut c) = bounded_sync(1);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:553:17
[INFO] [stderr]     |
[INFO] [stderr] 553 |     let (mut p, mut c) = bounded_sync(1);
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:572:10
[INFO] [stderr]     |
[INFO] [stderr] 572 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:572:17
[INFO] [stderr]     |
[INFO] [stderr] 572 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:596:13
[INFO] [stderr]     |
[INFO] [stderr] 596 |     let (p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:616:10
[INFO] [stderr]     |
[INFO] [stderr] 616 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:616:17
[INFO] [stderr]     |
[INFO] [stderr] 616 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:634:10
[INFO] [stderr]     |
[INFO] [stderr] 634 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:634:17
[INFO] [stderr]     |
[INFO] [stderr] 634 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:649:13
[INFO] [stderr]     |
[INFO] [stderr] 649 |     let (p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:661:10
[INFO] [stderr]     |
[INFO] [stderr] 661 |     let (mut p, c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:675:10
[INFO] [stderr]     |
[INFO] [stderr] 675 |     let (mut p, mut c) = bounded_sync(CAPACITY);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:675:17
[INFO] [stderr]     |
[INFO] [stderr] 675 |     let (mut p, mut c) = bounded_sync(CAPACITY);
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:696:10
[INFO] [stderr]     |
[INFO] [stderr] 696 |     let (mut p, c) = bounded_sync::<i32>(5);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:708:10
[INFO] [stderr]     |
[INFO] [stderr] 708 |     let (mut p, mut c) = bounded_sync::<i32>(5);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:708:17
[INFO] [stderr]     |
[INFO] [stderr] 708 |     let (mut p, mut c) = bounded_sync::<i32>(5);
[INFO] [stderr]     |                 ----^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:722:13
[INFO] [stderr]     |
[INFO] [stderr] 722 |     let (p, mut c) = bounded_sync::<i32>(5);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:745:12
[INFO] [stderr]     |
[INFO] [stderr] 745 |       let (mut p, mut c) = bounded_sync::<Droppable>(2);
[INFO] [stderr]     |            ----^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:745:19
[INFO] [stderr]     |
[INFO] [stderr] 745 |       let (mut p, mut c) = bounded_sync::<Droppable>(2);
[INFO] [stderr]     |                   ----^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:769:12
[INFO] [stderr]     |
[INFO] [stderr] 769 |       let (mut p, c) = bounded_sync::<Droppable>(2);
[INFO] [stderr]     |            ----^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:779:12
[INFO] [stderr]     |
[INFO] [stderr] 779 |       let (mut p, c) = bounded_sync::<Droppable>(1);
[INFO] [stderr]     |            ----^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:796:10
[INFO] [stderr]     |
[INFO] [stderr] 796 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:817:10
[INFO] [stderr]     |
[INFO] [stderr] 817 |     let (mut p, mut c) = bounded_sync::<i32>(1);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:829:10
[INFO] [stderr]     |
[INFO] [stderr] 829 |     let (mut p, c) = bounded_sync::<i32>(5);
[INFO] [stderr]     |          ----^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spmc/mod.rs:196:10
[INFO] [stderr]     |
[INFO] [stderr] 196 |     let (mut tx, rx) = bounded(2);
[INFO] [stderr]     |          ----^^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spmc/mod.rs:219:10
[INFO] [stderr]     |
[INFO] [stderr] 219 |     let (mut tx, rx1) = bounded(4);
[INFO] [stderr]     |          ----^^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spmc/mod.rs:265:10
[INFO] [stderr]     |
[INFO] [stderr] 265 |     let (mut tx, rx1) = bounded(1);
[INFO] [stderr]     |          ----^^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spmc/mod.rs:294:10
[INFO] [stderr]     |
[INFO] [stderr] 294 |     let (mut tx, rx1) = bounded(ITEMS_LOW);
[INFO] [stderr]     |          ----^^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spmc/mod.rs:327:10
[INFO] [stderr]     |
[INFO] [stderr] 327 |     let (mut tx, rx_fast) = bounded(1); // Capacity of 1
[INFO] [stderr]     |          ----^^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spmc/mod.rs:369:10
[INFO] [stderr]     |
[INFO] [stderr] 369 |     let (mut tx, rx) = bounded(2);
[INFO] [stderr]     |          ----^^
[INFO] [stderr]     |          |
[INFO] [stderr]     |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/spmc/mod.rs:406:8
[INFO] [stderr]     |
[INFO] [stderr] 406 |   let (mut tx, rx1) = bounded(2);
[INFO] [stderr]     |        ----^^
[INFO] [stderr]     |        |
[INFO] [stderr]     |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: static `DROP_COUNT` is never used
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:733:12
[INFO] [stderr]     |
[INFO] [stderr] 733 |     static DROP_COUNT: AtomicUsize = AtomicUsize::new(0);
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/spsc/bounded_sync.rs:735:22
[INFO] [stderr]     |
[INFO] [stderr] 735 |     struct Droppable(usize, Arc<AtomicUsize>);
[INFO] [stderr]     |            --------- ^^^^^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Droppable` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]     |
[INFO] [stderr] 735 -     struct Droppable(usize, Arc<AtomicUsize>);
[INFO] [stderr] 735 +     struct Droppable((), Arc<AtomicUsize>);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LOC_C_RECV` is never used
[INFO] [stderr]   --> src/spmc/ring_buffer.rs:26:7
[INFO] [stderr]    |
[INFO] [stderr] 26 | const LOC_C_RECV: &str = "Receiver::recv";
[INFO] [stderr]    |       ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stderr]    --> src/spmc/mod.rs:188:13
[INFO] [stderr]     |
[INFO] [stderr] 188 |   pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `STRESS_TIMEOUT` is never used
[INFO] [stderr]    --> src/spmc/mod.rs:189:13
[INFO] [stderr]     |
[INFO] [stderr] 189 |   pub const STRESS_TIMEOUT: Duration = Duration::from_secs(15);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stderr]    --> src/spmc/mod.rs:191:13
[INFO] [stderr]     |
[INFO] [stderr] 191 |   pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ITEMS_HIGH` is never used
[INFO] [stderr]    --> src/spmc/mod.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |   pub const ITEMS_HIGH: usize = 1000;
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/internal/cache_padded.rs:120:19
[INFO] [stderr]     |
[INFO] [stderr] 120 |     struct MyData(u64);
[INFO] [stderr]     |            ------ ^^^
[INFO] [stderr]     |            |
[INFO] [stderr]     |            field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing this field
[INFO] [stderr]     = note: `MyData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_async.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 |   let (mut tx, rx) = spmc::bounded_async(2);
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_async.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 |   let (mut tx, rx) = spmc::bounded_async::<i32>(2);
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_async.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 |   let (mut tx, rx1) = spmc::bounded_async(ITEMS_LOW);
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_async.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 72 |   let (mut tx, rx_fast) = spmc::bounded_async(1);
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ITEMS_MEDIUM` is never used
[INFO] [stderr]  --> tests/common/mod.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub const ITEMS_MEDIUM: usize = 200;
[INFO] [stderr]   |           ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ITEMS_HIGH` is never used
[INFO] [stderr]  --> tests/common/mod.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub const ITEMS_HIGH: usize = 1000;
[INFO] [stderr]   |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cvar`
[INFO] [stderr]    --> tests/spmc_repro.rs:119:16
[INFO] [stderr]     |
[INFO] [stderr] 119 |     let (lock, cvar) = &*timeout_signal;
[INFO] [stderr]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_cvar`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_repro.rs:22:10
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let (mut tx, rx_orig) = spmc::bounded(capacity);
[INFO] [stderr]    |          ----^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_repro.rs:34:11
[INFO] [stderr]    |
[INFO] [stderr] 34 |       let mut rx_clone = rx_orig.clone();
[INFO] [stderr]    |           ----^^^^^^^^
[INFO] [stderr]    |           |
[INFO] [stderr]    |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/spmc_repro.rs:120:9
[INFO] [stderr]     |
[INFO] [stderr] 120 |     let mut timed_out = *lock.lock().unwrap();
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SendError`
[INFO] [stderr]  --> examples/spmc.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use fibre::error::{RecvError, SendError};
[INFO] [stderr]   |                               ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AtomicUsize`, `Ordering`, and `sync::Arc`
[INFO] [stderr]  --> examples/spmc.rs:5:18
[INFO] [stderr]   |
[INFO] [stderr] 5 |   sync::atomic::{AtomicUsize, Ordering},
[INFO] [stderr]   |                  ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 6 |   sync::Arc,
[INFO] [stderr]   |   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `producer_task_handle`
[INFO] [stderr]    --> examples/spmc.rs:161:9
[INFO] [stderr]     |
[INFO] [stderr] 161 |     let producer_task_handle = common_async::block_on_tokio_task(async move {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_producer_task_handle`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spmc.rs:65:10
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let (mut tx, rx1_orig) = spmc::bounded_async::<String>(capacity);
[INFO] [stderr]    |          ----^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spmc.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut rx1 = rx1_orig.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spmc.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut rx2 = rx1_orig.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/spmc.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let mut tx_sync_converted = tx_async.to_sync(); // Convert producer
[INFO] [stderr]     |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/spmc.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |     let mut rx_async1 = rx_async1_orig.clone();
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/spmc.rs:114:9
[INFO] [stderr]     |
[INFO] [stderr] 114 |     let mut rx_async2 = rx_async1_orig.clone();
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/spmc.rs:162:11
[INFO] [stderr]     |
[INFO] [stderr] 162 |       let mut tx_async_local = tx_async; // Avoid capturing the original tx_async if it's used elsewhere
[INFO] [stderr]     |           ----^^^^^^^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spmc.rs:18:10
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let (mut tx, rx1_orig) = spmc::bounded::<String>(capacity);
[INFO] [stderr]    |          ----^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spmc.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut rx1 = rx1_orig.clone(); // Keep original alive for other clones
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stdout] 
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stdout] running 97 tests
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spmc.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut rx2 = rx1_orig.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/spmc.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |     let mut rx_sync1 = rx_async1_orig.clone().to_sync(); // Convert receivers
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/spmc.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |     let mut rx_sync2 = rx_async1_orig.to_sync();
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spsc.rs:48:14
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let (tx, mut rx) = spsc::bounded_async::<String>(capacity);
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spsc.rs:82:10
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let (mut tx_s, rx_s) = spsc::bounded_sync::<String>(capacity);
[INFO] [stderr]    |          ----^^^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spsc.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let mut rx_a = rx_s.to_async();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spsc.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut tx, mut rx) = spsc::bounded_sync::<String>(capacity);
[INFO] [stderr]    |          ----^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/spsc.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let (mut tx, mut rx) = spsc::bounded_sync::<String>(capacity);
[INFO] [stderr]    |                  ----^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/spsc.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |     let mut rx_s = rx_a.to_sync();
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> tests/spmc_sync.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let (mut tx, mut rx) = spmc::bounded(2);
[INFO] [stderr]   |        ----^^
[INFO] [stderr]   |        |
[INFO] [stderr]   |        help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> tests/spmc_sync.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let (mut tx, mut rx) = spmc::bounded(2);
[INFO] [stderr]   |                ----^^
[INFO] [stderr]   |                |
[INFO] [stderr]   |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |   let (mut tx, mut rx) = spmc::bounded::<i32>(2);
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:16:16
[INFO] [stderr]    |
[INFO] [stderr] 16 |   let (mut tx, mut rx) = spmc::bounded::<i32>(2);
[INFO] [stderr]    |                ----^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |   let (mut tx, mut rx1) = spmc::bounded(ITEMS_LOW);
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:25:16
[INFO] [stderr]    |
[INFO] [stderr] 25 |   let (mut tx, mut rx1) = spmc::bounded(ITEMS_LOW);
[INFO] [stderr]    |                ----^^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:26:7
[INFO] [stderr]    |
[INFO] [stderr] 26 |   let mut rx2 = rx1.clone();
[INFO] [stderr]    |       ----^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:27:7
[INFO] [stderr]    |
[INFO] [stderr] 27 |   let mut rx3 = rx1.clone();
[INFO] [stderr]    |       ----^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 |   let (mut tx, mut rx_fast) = spmc::bounded(1); // Capacity of 1
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:56:16
[INFO] [stderr]    |
[INFO] [stderr] 56 |   let (mut tx, mut rx_fast) = spmc::bounded(1); // Capacity of 1
[INFO] [stderr]    |                ----^^^^^^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:57:7
[INFO] [stderr]    |
[INFO] [stderr] 57 |   let mut rx_slow = rx_fast.clone();
[INFO] [stderr]    |       ----^^^^^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/spmc_sync.rs:87:8
[INFO] [stderr]    |
[INFO] [stderr] 87 |   let (mut tx, rx) = spmc::bounded(2);
[INFO] [stderr]    |        ----^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `SHORT_TIMEOUT` is never used
[INFO] [stderr]  --> tests/common/mod.rs:3:11
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const SHORT_TIMEOUT: Duration = Duration::from_millis(500);
[INFO] [stderr]   |           ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `LONG_TIMEOUT` is never used
[INFO] [stderr]  --> tests/common/mod.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const LONG_TIMEOUT: Duration = Duration::from_secs(3);
[INFO] [stderr]   |           ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SendError`
[INFO] [stderr]  --> examples/mpsc.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use fibre::error::{RecvError, SendError};
[INFO] [stderr]   |                               ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/mpsc.rs:59:14
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let (tx, mut rx) = mpsc::unbounded_async::<String>();
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/mpsc.rs:99:20
[INFO] [stderr]    |
[INFO] [stderr] 99 |     let (tx_async, mut rx_async) = mpsc::unbounded_async::<String>(); // Start with async channel
[INFO] [stderr]    |                    ----^^^^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/mpsc.rs:16:14
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let (tx, mut rx) = mpsc::unbounded::<String>();
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/mpsc.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |     let mut rx_sync = rx_async.to_sync(); // Convert receiver
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/mpsc_sync.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |   let (tx, mut rx) = mpsc::unbounded_async();
[INFO] [stderr]    |            ----^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stdout] test coord::capacity_gate::futures::tests::acquire_and_release_on_drop ... ok
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] test internal::cache_padded::tests::alignment_check ... ok
[INFO] [stderr]   --> tests/mpsc_sync.rs:27:12
[INFO] [stdout] test internal::cache_padded::tests::const_constructor ... ok
[INFO] [stderr]    |
[INFO] [stdout] test internal::cache_padded::tests::debug_output ... ok
[INFO] [stderr] 27 |   let (tx, mut rx) = mpsc::unbounded_async();
[INFO] [stdout] test internal::cache_padded::tests::deref_mut_works ... ok
[INFO] [stderr]    |            ----^^
[INFO] [stdout] test mpsc::bounded_tests::async_send_recv ... ok
[INFO] [stderr]    |            |
[INFO] [stdout] test coord::capacity_gate::futures::tests::new_gate_has_correct_initial_permits ... ok
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stdout] test coord::capacity_gate::mixed::tests::gate_new_and_capacity ... ok
[INFO] [stderr] 
[INFO] [stdout] test coord::capacity_gate::mixed::tests::acquire_sync_release ... ok
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/mpsc_sync.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 |   let (tx, mut rx) = mpsc::unbounded_async::<()>();
[INFO] [stderr]    |            ----^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/mpsc_sync.rs:69:12
[INFO] [stderr]    |
[INFO] [stderr] 69 |   let (tx, mut rx) = mpsc::unbounded_async();
[INFO] [stderr]    |            ----^^
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> tests/mpsc_sync.rs:104:18
[INFO] [stderr]     |
[INFO] [stderr] 104 |   let (tx_async, mut rx_async) = mpsc::unbounded_async();
[INFO] [stderr]     |                  ----^^^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TryRecvError`
[INFO] [stderr]  --> tests/topic_spmc_async.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | use fibre::error::{RecvError, SendError, TryRecvError};
[INFO] [stderr]   |                                          ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> tests/topic_spmc_async.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fibre` (test "mpmc_async") generated 3 warnings
[INFO] [stderr] warning: `fibre` (lib test) generated 76 warnings (14 duplicates) (run `cargo fix --lib -p fibre --tests` to apply 54 suggestions)
[INFO] [stderr] warning: `fibre` (test "spmc_async") generated 8 warnings (2 duplicates) (run `cargo fix --test "spmc_async"` to apply 4 suggestions)
[INFO] [stderr] warning: `fibre` (test "spmc_repro") generated 4 warnings (run `cargo fix --test "spmc_repro"` to apply 3 suggestions)
[INFO] [stderr] warning: `fibre` (example "spmc") generated 15 warnings (run `cargo fix --example "spmc"` to apply 14 suggestions)
[INFO] [stderr] warning: `fibre` (example "spsc") generated 6 warnings (run `cargo fix --example "spsc"` to apply 6 suggestions)
[INFO] [stderr] warning: `fibre` (test "spmc_sync") generated 16 warnings (4 duplicates) (run `cargo fix --test "spmc_sync"` to apply 12 suggestions)
[INFO] [stderr] warning: `fibre` (test "mpmc_sync") generated 4 warnings (2 duplicates)
[INFO] [stderr] warning: `fibre` (test "topic_spmc_sync") generated 5 warnings (5 duplicates)
[INFO] [stderr] warning: `fibre` (example "mpsc") generated 5 warnings (run `cargo fix --example "mpsc"` to apply 5 suggestions)
[INFO] [stderr] warning: `fibre` (test "mpsc_sync") generated 9 warnings (4 duplicates) (run `cargo fix --test "mpsc_sync"` to apply 5 suggestions)
[INFO] [stderr] warning: `fibre` (test "topic_spmc_async") generated 7 warnings (5 duplicates) (run `cargo fix --test "topic_spmc_async"` to apply 2 suggestions)
[INFO] [stderr] warning: `fibre` (test "mpsc_async") generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> examples/oneshot.rs:145:7
[INFO] [stderr]     |
[INFO] [stderr] 141 |       Err(RecvError::Disconnected) => {
[INFO] [stderr]     |       ---------------------------- matches all the relevant values
[INFO] [stderr] ...
[INFO] [stderr] 145 |       Err(e) => panic!("Unexpected error: {:?}", e),
[INFO] [stderr]     |       ^^^^^^ no value can reach this
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/oneshot.rs:11:14
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/oneshot.rs:39:14
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/oneshot.rs:71:14
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/oneshot.rs:138:14
[INFO] [stderr]     |
[INFO] [stderr] 138 |     let (tx, mut rx) = oneshot::oneshot::<String>();
[INFO] [stderr]     |              ----^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/oneshot.rs:104:26
[INFO] [stderr]     |
[INFO] [stderr] 104 |   let (tx_async_to_sync, mut rx_async_for_sync) = oneshot::oneshot::<String>();
[INFO] [stderr]     |                          ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `fibre` (example "oneshot") generated 6 warnings (run `cargo fix --example "oneshot"` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [optimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fibre-5557e8884033e8b1)
[INFO] [stdout] test mpsc::bounded_tests::sync_receiver_drop ... ok
[INFO] [stdout] test mpsc::bounded_tests::sync_send_recv ... ok
[INFO] [stdout] test mpsc::bounded_tests::sync_try_send_full ... ok
[INFO] [stdout] test mpsc::tests::close_and_is_closed ... ok
[INFO] [stdout] test mpsc::bounded_tests::high_contention_async_mpsc ... ok
[INFO] [stdout] test mpsc::tests::len_and_is_empty_sync ... ok
[INFO] [stdout] test mpsc::bounded_tests::mixed_async_send_sync_recv ... ok
[INFO] [stdout] test mpsc::tests::len_and_is_empty_async ... ok
[INFO] [stdout] test oneshot::tests::is_closed_and_is_sent_semantics ... ok
[INFO] [stdout] test oneshot::tests::only_first_send_succeeds_cloned_senders ... ok
[INFO] [stdout] test oneshot::tests::receiver_dropped_after_send_value_is_dropped ... ok
[INFO] [stdout] test mpsc::bounded_tests::mixed_sync_send_async_recv ... ok
[INFO] [stdout] test oneshot::tests::recv_after_all_senders_dropped_no_send ... ok
[INFO] [stdout] test mpsc::bounded_tests::high_contention_mixed_sync_async ... ok
[INFO] [stdout] test oneshot::tests::send_consumes_sender ... ok
[INFO] [stdout] test mpsc::bounded_tests::async_send_waits ... ok
[INFO] [stdout] test mpsc::bounded_tests::zero_capacity_channel_sync_rendezvous ... ok
[INFO] [stdout] test oneshot::tests::send_fails_if_receiver_dropped ... ok
[INFO] [stdout] test oneshot::tests::send_recv_ok ... ok
[INFO] [stdout] test oneshot::tests::sender_clones_drop_receiver_gets_disconnected ... ok
[INFO] [stdout] test oneshot::tests::try_recv_after_send ... ok
[INFO] [stdout] test spmc::tests::spmc_close_and_is_closed ... ok
[INFO] [stdout] test oneshot::tests::try_recv_before_send ... ok
[INFO] [stdout] test spmc::tests::spmc_multiple_receivers ... ok
[INFO] [stdout] test spmc::tests::spmc_single_recv ... ok
[INFO] [stdout] test spmc::tests::spmc_multiple_receivers_len_checks ... ok
[INFO] [stdout] test spmc::tests::spmc_sync_all_receivers_drop_closes_channel ... ok
[INFO] [stdout] test spmc::tests::spmc_sync_try_send ... ok
[INFO] [stdout] test spmc::topic::left_right::tests::cloned_read_handle_sees_updates ... ok
[INFO] [stdout] test spmc::topic::left_right::tests::initial_state_is_default ... ok
[INFO] [stdout] test spmc::topic::left_right::tests::write_and_read_back ... ok
[INFO] [stdout] test spmc::topic::left_right::tests::concurrent_reads_and_writes_are_consistent ... ok
[INFO] [stdout] test mpsc::bounded_tests::zero_capacity_channel_async_rendezvous ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::deliver_drops_when_full ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::producer_drop_with_empty_channel ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::producer_drop_with_items_in_channel ... ok
[INFO] [stdout] test mpsc::tests::async_to_async ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::concurrent_delivery ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::try_recv_empty_and_after_deliver ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_consumer_drop_signals_producer ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_producer_drop_empty_signals_consumer ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_producer_drop_signals_consumer ... ok
[INFO] [stdout] test mpsc::bounded_tests::sender_unblocks_when_receiver_dropped ... ok
[INFO] [stdout] test mpsc::tests::async_to_sync_conversion ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_recv_future_disconnected_after_item ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_select_recv_preference ... ok
[INFO] [stdout] test mpsc::tests::sync_to_async_conversion ... ok
[INFO] [stdout] test mpsc::tests::sync_to_sync_blocking ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_send_recv_single_item ... ok
[INFO] [stdout] test oneshot::tests::receiver_dropped_while_sender_sending_concurrently ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_try_recv_disconnected ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_try_send_full_try_recv_empty ... ok
[INFO] [stdout] test spsc::bounded_async::tests::create_async_channel ... ok
[INFO] [stdout] test coord::capacity_gate::mixed::tests::acquire_async_waits_and_completes ... ok
[INFO] [stdout] test spsc::bounded_async::tests::new_spsc_apis_close_is_closed ... ok
[INFO] [stdout] test spsc::bounded_async::tests::sync_producer_async_consumer ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::create_channel ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::new_spsc_apis_capacity_close_is_closed ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::producer_drop_empty_signals_consumer ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::producer_drop_signals_consumer ... ok
[INFO] [stdout] test coord::capacity_gate::mixed::tests::acquire_sync_blocks_and_unblocks ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::async_recv_wakes_on_disconnect ... ok
[INFO] [stdout] test mpsc::bounded_tests::sync_send_blocks ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::recv_timeout_producer_drops_empty ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_producer_sync_consumer ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_recv_blocks_then_completes ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::recv_async_waits_and_completes ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_send_blocks_then_completes ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::consumer_drop_signals_producer ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::recv_timeout_producer_drops_with_item ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::send_recv_single_item ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::try_recv_disconnected_by_producer_drop ... ok
[INFO] [stdout] test oneshot::tests::select_on_recv ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::try_recv_disconnected_by_producer_drop_empty ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::try_send_closed_by_consumer_drop ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::values_are_dropped ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::try_send_full_try_recv_empty ... ok
[INFO] [stdout] test coord::capacity_gate::mixed::tests::mixed_waiters_contention ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::recv_timeout_empty_times_out ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::recv_timeout_item_arrives ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::stress_send_recv ... ok
[INFO] [stdout] test spmc::topic::mailbox::tests::recv_sync_blocks_and_unblocks ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::create_channel_zero_capacity - should panic ... ok
[INFO] [stdout] test spsc::bounded_async::tests::async_select_send_blocks_other_completes ... ok
[INFO] [stdout] test spsc::bounded_sync::tests::recv_blocks_until_send ... FAILED
[INFO] [stdout] test spsc::bounded_sync::tests::send_blocks_until_recv ... ok
[INFO] [stdout] test coord::capacity_gate::futures::tests::concurrent_acquire ... ok
[INFO] [stdout] test spmc::tests::spmc_sync_slow_consumer_blocks_producer ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- spsc::bounded_sync::tests::recv_blocks_until_send stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'spsc::bounded_sync::tests::recv_blocks_until_send' panicked at src/spsc/bounded_sync.rs:628:5:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 0
[INFO] [stdout]  right: 1
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x606e6a30ba42 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x606e6a30ba42 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x606e6a30ba42 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x606e6a30ba42 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x606e6a3310d3 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x606e6a3310d3 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x606e6a3086e3 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x606e6a3086e3 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x606e6a30b892 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x606e6a30cfbc - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x606e6a30ce12 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x606e6a29f254 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x606e6a29f254 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x606e6a30da9b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x606e6a30da9b - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x606e6a30d76a - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x606e6a30bf49 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x606e6a30d3fd - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x606e6a32fb20 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x606e6a32feb4 - core::panicking::assert_failed_inner::h02e1528dd7bc6647
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:448:17
[INFO] [stdout]   20:     0x606e6a32fdd6 - core::panicking::assert_failed::h24b207bf351b573a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:403:5
[INFO] [stdout]   21:     0x606e6a25a26e - fibre::spsc::bounded_sync::tests::recv_blocks_until_send::h2092c2b0b59861a9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/spsc/bounded_sync.rs:628:5
[INFO] [stdout]   22:     0x606e6a249c99 - fibre::spsc::bounded_sync::tests::recv_blocks_until_send::{{closure}}::hc213b978edd70fd6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/spsc/bounded_sync.rs:615:30
[INFO] [stdout]   23:     0x606e6a249c99 - core::ops::function::FnOnce::call_once::h199384527d354812
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x606e6a2a49db - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x606e6a2a49db - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x606e6a2a3bce - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x606e6a2a3bce - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x606e6a2a3bce - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x606e6a2a3bce - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x606e6a2a3bce - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x606e6a2a3bce - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x606e6a2a3bce - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x606e6a267744 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x606e6a267744 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   35:     0x606e6a26b11a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x606e6a26b11a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x606e6a26b11a - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x606e6a26b11a - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x606e6a26b11a - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x606e6a26b11a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x606e6a26b11a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x606e6a310c17 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x606e6a310c17 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   44:     0x606e6a310c17 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   45:     0x7584e6c1faa4 - <unknown>
[INFO] [stdout]   46:     0x7584e6caca34 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     spsc::bounded_sync::tests::recv_blocks_until_send
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 96 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.56s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "dd12b9e586b0b2173195b23c4dc5f4392ea1c4b9b11cbf49707acefb4274f5d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd12b9e586b0b2173195b23c4dc5f4392ea1c4b9b11cbf49707acefb4274f5d2", kill_on_drop: false }`
[INFO] [stdout] dd12b9e586b0b2173195b23c4dc5f4392ea1c4b9b11cbf49707acefb4274f5d2
