error: casting the result of `as_ptr` to *mut u8
  --> tests/ui/as_ptr_cast_mut.rs:22:13
   |
LL |     let _ = string.as_ptr() as *mut u8;
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `string.as_mut_ptr()`
   |
   = note: `-D clippy::as-ptr-cast-mut` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::as_ptr_cast_mut)]`

error: casting the result of `as_ptr` to *mut i8
  --> tests/ui/as_ptr_cast_mut.rs:25:22
   |
LL |     let _: *mut i8 = string.as_ptr() as *mut _;
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `string.as_mut_ptr()`

error: aborting due to 2 previous errors