| error[E0596]: cannot borrow data in a dereference of `UniquePtr<ffi::Opaque>` as mutable | |
| --> $DIR/unique_ptr_as_mut.rs:22:31 | |
| | | |
| 22 | let _: &mut ffi::Opaque = &mut opaque; | |
| | ^^^^^^^^^^^ cannot borrow as mutable | |
| | | |
| = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `UniquePtr<ffi::Opaque>` |