removing &mut self for other methods of AllocRef

library/alloc/src/alloc.rs

@@ -213,12 +213,12 @@ unsafe impl AllocRef for Global {
     }
 
     #[inline]
-    fn alloc_zeroed(&mut self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
+    fn alloc_zeroed(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocErr> {
         self.alloc_impl(layout, true)
     }
 
     #[inline]
-    unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
+    unsafe fn dealloc(&self, ptr: NonNull<u8>, layout: Layout) {
         if layout.size() != 0 {
             // SAFETY: `layout` is non-zero in size,
             // other conditions must be upheld by the caller

library/alloc/src/raw_vec.rs

@@ -169,7 +169,7 @@ impl<T, A: AllocRef> RawVec<T, A> {
         Self::allocate_in(capacity, AllocInit::Zeroed, alloc)
     }
 
-    fn allocate_in(capacity: usize, init: AllocInit, mut alloc: A) -> Self {
+    fn allocate_in(capacity: usize, init: AllocInit, alloc: A) -> Self {
         if mem::size_of::<T>() == 0 {
             Self::new_in(alloc)
         } else {

library/alloc/src/raw_vec/tests.rs

@@ -34,7 +34,7 @@ fn allocator_param() {
                 err @ Err(_) => err,
             }
         }
-        unsafe fn dealloc(&mut self, ptr: NonNull<u8>, layout: Layout) {
+        unsafe fn dealloc(&self, ptr: NonNull<u8>, layout: Layout) {
             unsafe { Global.dealloc(ptr, layout) }
         }
     }