error[E0133]: call to unsafe function is unsafe and requires unsafe function or block --> $DIR/unsafe-call.rs:13:9 | 13 | self.project().f.get_unchecked_mut(); //~ ERROR call to unsafe function is unsafe and requires unsafe function or block [E0133] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function | = note: consult the function's documentation for information on how to avoid undefined behavior