error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
  --> $DIR/trait-safety-fn-body.rs:11:9
   |
LL |         *self += 1;
   |         ^^^^^^^^^^ dereference of raw pointer
   |
   = note: raw pointers may be NULL, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior

error: aborting due to previous error

For more information about this error, try `rustc --explain E0133`.