diff --git a/.github/workflows/pipeline.yml b/.github/workflows/pipeline.yml
index 46c427ee0f..2b4ed9dbe9 100644
--- a/.github/workflows/pipeline.yml
+++ b/.github/workflows/pipeline.yml
@@ -18,6 +18,9 @@ jobs:
       # nightly is only used by cargo-minimal-versions to regenerate the lock file
       - run: rustup toolchain add nightly --no-self-update
       - name: Test all features
+        env:
+          RUSTFLAGS:
+            --cfg dev
         run: cargo minimal-versions test --all-features --workspace
       - name: Check snapshots
         run: git diff --exit-code -- tests/out
diff --git a/src/arena.rs b/src/arena.rs
index 7f1f117e8e..080a423bda 100644
--- a/src/arena.rs
+++ b/src/arena.rs
@@ -161,7 +161,7 @@ impl<T> Iterator for Range<T> {
 /// Adding new items to the arena produces a strongly-typed [`Handle`].
 /// The arena can be indexed using the given handle to obtain
 /// a reference to the stored item.
-#[derive(Clone)]
+#[cfg_attr(not(dev), derive(Clone))]
 #[cfg_attr(feature = "serialize", derive(serde::Serialize))]
 #[cfg_attr(feature = "serialize", serde(transparent))]
 #[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
@@ -413,7 +413,7 @@ mod tests {
 ///
 /// `UniqueArena` is similar to [`Arena`]: If `Arena` is vector-like,
 /// `UniqueArena` is `HashSet`-like.
-#[derive(Clone)]
+#[cfg_attr(not(dev), derive(Clone))]
 pub struct UniqueArena<T> {
     set: IndexSet<T>,
 
diff --git a/src/lib.rs b/src/lib.rs
index 31d44429dd..1fa964e2a9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -556,7 +556,8 @@ pub enum ImageClass {
 }
 
 /// A data type declared in the module.
-#[derive(Clone, Debug, Eq, Hash, PartialEq)]
+#[derive(Debug, Eq, Hash, PartialEq)]
+#[cfg_attr(not(dev), derive(Clone))]
 #[cfg_attr(feature = "serialize", derive(Serialize))]
 #[cfg_attr(feature = "deserialize", derive(Deserialize))]
 #[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
@@ -568,7 +569,8 @@ pub struct Type {
 }
 
 /// Enum with additional information, depending on the kind of type.
-#[derive(Clone, Debug, Eq, Hash, PartialEq)]
+#[derive(Debug, Eq, Hash, PartialEq)]
+#[cfg_attr(not(dev), derive(Clone))]
 #[cfg_attr(feature = "serialize", derive(Serialize))]
 #[cfg_attr(feature = "deserialize", derive(Deserialize))]
 #[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
@@ -744,7 +746,8 @@ pub enum TypeInner {
 }
 
 /// Constant value.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Debug, PartialEq)]
+#[cfg_attr(not(dev), derive(Clone))]
 #[cfg_attr(feature = "serialize", derive(Serialize))]
 #[cfg_attr(feature = "deserialize", derive(Deserialize))]
 #[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
@@ -1582,7 +1585,8 @@ pub struct FunctionResult {
 }
 
 /// A function defined in the module.
-#[derive(Clone, Debug, Default)]
+#[derive(Debug, Default)]
+#[cfg_attr(not(dev), derive(Clone))]
 #[cfg_attr(feature = "serialize", derive(Serialize))]
 #[cfg_attr(feature = "deserialize", derive(Deserialize))]
 #[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
@@ -1646,7 +1650,8 @@ pub struct Function {
 /// [`Location`]: Binding::Location
 /// [`function`]: EntryPoint::function
 /// [`stage`]: EntryPoint::stage
-#[derive(Clone, Debug)]
+#[derive(Debug)]
+#[cfg_attr(not(dev), derive(Clone))]
 #[cfg_attr(feature = "serialize", derive(Serialize))]
 #[cfg_attr(feature = "deserialize", derive(Deserialize))]
 #[cfg_attr(feature = "arbitrary", derive(Arbitrary))]
@@ -1676,7 +1681,8 @@ pub struct EntryPoint {
 /// Alternatively, you can load an existing shader using one of the [available front ends][front].
 ///
 /// When finished, you can export modules using one of the [available backends][back].
-#[derive(Clone, Debug, Default)]
+#[derive(Debug, Default)]
+#[cfg_attr(not(dev), derive(Clone))]
 #[cfg_attr(feature = "serialize", derive(Serialize))]
 #[cfg_attr(feature = "deserialize", derive(Deserialize))]
 #[cfg_attr(feature = "arbitrary", derive(Arbitrary))]