rust/src/test/ui/augmented-assignments.stderr

error[E0596]: cannot borrow immutable local variable `y` as mutable
  --> $DIR/augmented-assignments.rs:30:5
   |
28 |     let y = Int(2);
   |         - consider changing this to `mut y`
29 |     //~^ consider changing this to `mut y`
30 |     y   //~ error: cannot borrow immutable local variable `y` as mutable
   |     ^ cannot borrow mutably

error[E0382]: use of moved value: `x`
  --> $DIR/augmented-assignments.rs:23:5
   |
23 |     x   //~ error: use of moved value: `x`
   |     ^ value used here after move
...
26 |     x;  //~ value moved here
   |     - value moved here
   |
   = note: move occurs because `x` has type `Int`, which does not implement the `Copy` trait

error: aborting due to 2 previous errors

You've got a few errors: E0382, E0596
If you want more information on an error, try using "rustc --explain E0382"