bench: fix unused_mut lint in benches (#2889)

2 files changed, 6 insertions, 6 deletions

diff --git a/benches/mpsc.rs b/benches/mpsc.rs
index ec07ad8f..2f3fe963 100644
--- a/benches/mpsc.rs
+++ b/benches/mpsc.rs
@@ -24,7 +24,7 @@ fn create_100_000_medium(b: &mut Bencher) {
 
 fn send_medium(b: &mut Bencher) {
     b.iter(|| {
-        let (mut tx, mut rx) = mpsc::channel::<Medium>(1000);
+        let (tx, mut rx) = mpsc::channel::<Medium>(1000);
 
         let _ = tx.try_send([0; 64]);
 
@@ -34,7 +34,7 @@ fn send_medium(b: &mut Bencher) {
 
 fn send_large(b: &mut Bencher) {
     b.iter(|| {
-        let (mut tx, mut rx) = mpsc::channel::<Large>(1000);
+        let (tx, mut rx) = mpsc::channel::<Large>(1000);
 
         let _ = tx.try_send([[0; 64]; 64]);
 
@@ -54,7 +54,7 @@ fn contention_bounded(b: &mut Bencher) {
             let (tx, mut rx) = mpsc::channel::<usize>(1_000_000);
 
             for _ in 0..5 {
-                let mut tx = tx.clone();
+                let tx = tx.clone();
                 tokio::spawn(async move {
                     for i in 0..1000 {
                         tx.send(i).await.unwrap();
@@ -81,7 +81,7 @@ fn contention_bounded_full(b: &mut Bencher) {
             let (tx, mut rx) = mpsc::channel::<usize>(100);
 
             for _ in 0..5 {
-                let mut tx = tx.clone();
+                let tx = tx.clone();
                 tokio::spawn(async move {
                     for i in 0..1000 {
                         tx.send(i).await.unwrap();
@@ -132,7 +132,7 @@ fn uncontented_bounded(b: &mut Bencher) {
 
     b.iter(|| {
         rt.block_on(async move {
-            let (mut tx, mut rx) = mpsc::channel::<usize>(1_000_000);
+            let (tx, mut rx) = mpsc::channel::<usize>(1_000_000);
 
             for i in 0..5000 {
                 tx.send(i).await.unwrap();
diff --git a/benches/signal.rs b/benches/signal.rs
index d891326d..3a354c6b 100644
--- a/benches/signal.rs
+++ b/benches/signal.rs
@@ -53,7 +53,7 @@ fn many_signals(bench: &mut Bencher) {
         .unwrap();
 
     let spawn_signal = |kind| {
-        let mut tx = tx.clone();
+        let tx = tx.clone();
         rt.spawn(async move {
             let mut signal = signal(kind).expect("failed to create signal");