-error[E0599]: no method named `as_deref_mut` found for type `std::result::Result<{integer}, _>` in the current scope
+error[E0599]: no method named `as_deref_mut` found for enum `std::result::Result<{integer}, _>` in the current scope
--> $DIR/result-as_deref_mut.rs:4:31
|
LL | let _result = &mut Ok(42).as_deref_mut();