src/test/ui/issues/issue-46472.stderr

   1 error[E0515]: cannot return reference to temporary value
   2   --> $DIR/issue-46472.rs:2:5
   3    |
   4 LL |     &mut 4
   5    |     ^^^^^-
   6    |     |    |
   7    |     |    temporary value created here
   8    |     returns a reference to data owned by the current function
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0515`.