| error[E0599]: no method named `as_deref_mut` found for enum `std::option::Option<{integer}>` in the current scope | |
| --> $DIR/option-as_deref_mut.rs:2:33 | |
| | | |
| LL | let _result = &mut Some(42).as_deref_mut(); | |
| | ^^^^^^^^^^^^ method not found in `std::option::Option<{integer}>` | |
| | | |
| = note: the method `as_deref_mut` exists but the following trait bounds were not satisfied: | |
| `{integer} : std::ops::DerefMut` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0599`. |