diff --git a/crossbeam-channel/benchmarks/message.rs b/crossbeam-channel/benchmarks/message.rs
index f8a921ec7..55c1697a2 100644
--- a/crossbeam-channel/benchmarks/message.rs
+++ b/crossbeam-channel/benchmarks/message.rs
@@ -3,7 +3,7 @@ use std::fmt;
 const LEN: usize = 1;
 
 #[derive(Clone, Copy)]
-pub struct Message(pub [usize; LEN]);
+pub struct Message(#[allow(dead_code)] [usize; LEN]);
 
 impl fmt::Debug for Message {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
diff --git a/crossbeam-epoch/src/collector.rs b/crossbeam-epoch/src/collector.rs
index 5b0851184..efcf0fe8d 100644
--- a/crossbeam-epoch/src/collector.rs
+++ b/crossbeam-epoch/src/collector.rs
@@ -286,7 +286,7 @@ mod tests {
         const COUNT: usize = 100_000;
         static DROPS: AtomicUsize = AtomicUsize::new(0);
 
-        struct Elem(i32);
+        struct Elem(#[allow(dead_code)] i32);
 
         impl Drop for Elem {
             fn drop(&mut self) {
@@ -350,7 +350,7 @@ mod tests {
         const COUNT: usize = 700;
         static DROPS: AtomicUsize = AtomicUsize::new(0);
 
-        struct Elem(i32);
+        struct Elem(#[allow(dead_code)] i32);
 
         impl Drop for Elem {
             fn drop(&mut self) {
@@ -427,7 +427,7 @@ mod tests {
         const COUNT: usize = 100_000;
         static DROPS: AtomicUsize = AtomicUsize::new(0);
 
-        struct Elem(i32);
+        struct Elem(#[allow(dead_code)] i32);
 
         impl Drop for Elem {
             fn drop(&mut self) {
diff --git a/crossbeam-utils/tests/atomic_cell.rs b/crossbeam-utils/tests/atomic_cell.rs
index 7a2689d99..9fe69328d 100644
--- a/crossbeam-utils/tests/atomic_cell.rs
+++ b/crossbeam-utils/tests/atomic_cell.rs
@@ -6,11 +6,11 @@ use crossbeam_utils::atomic::AtomicCell;
 
 #[test]
 fn is_lock_free() {
-    struct UsizeWrap(usize);
-    struct U8Wrap(bool);
-    struct I16Wrap(i16);
+    struct UsizeWrap(#[allow(dead_code)] usize);
+    struct U8Wrap(#[allow(dead_code)] bool);
+    struct I16Wrap(#[allow(dead_code)] i16);
     #[repr(align(8))]
-    struct U64Align8(u64);
+    struct U64Align8(#[allow(dead_code)] u64);
 
     assert!(AtomicCell::<usize>::is_lock_free());
     assert!(AtomicCell::<isize>::is_lock_free());