error[E0606]: casting `*mut impl Debug + ?Sized` as `*mut impl Debug + ?Sized` is invalid --> $DIR/casts-differing-anon.rs:21:13 | LL | b_raw = f_raw as *mut _; | ^^^^^^^^^^^^^^^ | = note: vtable kinds may not match error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0606`.