2 files changed, 2 insertions, 1 deletions
diff --git a/src/libproc_macro/bridge/buffer.rs b/src/libproc_macro/bridge/buffer.rs
index 0d8cc552d61..a51e3a9a33d 100644
--- a/src/libproc_macro/bridge/buffer.rs
+++ b/src/libproc_macro/bridge/buffer.rs
@@ -78,7 +78,7 @@ impl<T: Copy> Buffer<T> {
     }
 
     pub(super) fn take(&mut self) -> Self {
-        mem::replace(self, Self::default())
+        mem::take(self)
     }
 
     pub(super) fn extend_from_slice(&mut self, xs: &[T]) {
diff --git a/src/libproc_macro/lib.rs b/src/libproc_macro/lib.rs
index 1e0f1ed578a..2c097238b95 100644
--- a/src/libproc_macro/lib.rs
+++ b/src/libproc_macro/lib.rs
@@ -25,6 +25,7 @@
 #![feature(extern_types)]
 #![feature(in_band_lifetimes)]
 #![feature(optin_builtin_traits)]
+#![feature(mem_take)]
 #![feature(non_exhaustive)]
 #![feature(specialization)]