| error[E0282]: type annotations needed | |
| --> $DIR/unconstrained-ref.rs:6:5 | |
| | | |
| LL | S { o: &None }; | |
| | ^^^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the struct `S` | |
| | | |
| help: consider specifying the generic argument | |
| | | |
| LL | S::<T> { o: &None }; | |
| | +++++ | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0282`. |