error: use of `offset` with a `usize` casted to an `isize`
  --> $DIR/ptr_offset_with_cast.rs:20:9
   |
20 |         ptr.offset(offset_usize as isize);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `ptr.add(offset_usize)`
   |
   = note: `-D clippy::ptr-offset-with-cast` implied by `-D warnings`

error: use of `wrapping_offset` with a `usize` casted to an `isize`
  --> $DIR/ptr_offset_with_cast.rs:24:9
   |
24 |         ptr.wrapping_offset(offset_usize as isize);
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `ptr.wrapping_add(offset_usize)`

error: aborting due to 2 previous errors