Allow use of deprecated std::raw in a test for that feature

library/core/tests/mem.rs

@@ -97,6 +97,9 @@ fn test_transmute_copy() {
     assert_eq!(1, unsafe { transmute_copy(&1) });
 }
 
+// Remove this test when `std::raw` is removed.
+// The replacement pointer metadata APIs are tested in library/core/tests/ptr.rs
+#[allow(deprecated)]
 #[test]
 fn test_transmute() {
     trait Foo {

src/test/ui/cast/fat-ptr-cast-rpass.rs

@@ -1,5 +1,8 @@
 // run-pass
 
+// Remove this file when `std::raw` is removed.
+// The replacement pointer metadata APIs are tested in library/core/tests/ptr.rs
+#![allow(deprecated)]
 #![feature(raw)]
 
 use std::mem;
@@ -37,5 +40,4 @@ fn main() {
 
     assert_eq!(b, d);
     assert_eq!(c, d as usize);
-
 }