3 files changed, 3 insertions, 3 deletions
diff --git a/src/librustc_data_structures/array_vec.rs b/src/librustc_data_structures/array_vec.rs
index ced73e9e426..df660d08603 100644
--- a/src/librustc_data_structures/array_vec.rs
+++ b/src/librustc_data_structures/array_vec.rs
@@ -260,7 +260,7 @@ impl<'a, A: Array> Drop for Drain<'a, A> {
                 let start = source_array_vec.len();
                 let tail = self.tail_start;
                 {
-                    let mut arr = &mut source_array_vec.values as &mut [ManuallyDrop<_>];
+                    let arr = &mut source_array_vec.values as &mut [ManuallyDrop<_>];
                     let src = arr.as_ptr().offset(tail as isize);
                     let dst = arr.as_mut_ptr().offset(start as isize);
                     ptr::copy(src, dst, self.tail_len);
diff --git a/src/librustc_data_structures/bitvec.rs b/src/librustc_data_structures/bitvec.rs
index ffcd25a4cdd..7fc59be780f 100644
--- a/src/librustc_data_structures/bitvec.rs
+++ b/src/librustc_data_structures/bitvec.rs
@@ -166,7 +166,7 @@ impl BitMatrix {
     pub fn add(&mut self, source: usize, target: usize) -> bool {
         let (start, _) = self.range(source);
         let (word, mask) = word_mask(target);
-        let mut vector = &mut self.vector[..];
+        let vector = &mut self.vector[..];
         let v1 = vector[start + word];
         let v2 = v1 | mask;
         vector[start + word] = v2;
diff --git a/src/librustc_data_structures/indexed_vec.rs b/src/librustc_data_structures/indexed_vec.rs
index 29ac650aa70..1f44378c9e6 100644
--- a/src/librustc_data_structures/indexed_vec.rs
+++ b/src/librustc_data_structures/indexed_vec.rs
@@ -259,7 +259,7 @@ impl<'a, I: Idx, T> IntoIterator for &'a mut IndexVec<I, T> {
     type IntoIter = slice::IterMut<'a, T>;
 
     #[inline]
-    fn into_iter(mut self) -> slice::IterMut<'a, T> {
+    fn into_iter(self) -> slice::IterMut<'a, T> {
         self.raw.iter_mut()
     }
 }