| error[E0282]: type annotations needed | |
| --> $DIR/unconstrained-none.rs:4:5 | |
| | | |
| LL | None; | |
| | ^^^^ cannot infer type of the type parameter `T` declared on the enum `Option` | |
| | | |
| help: consider specifying the generic argument | |
| | | |
| LL | None::<T>; | |
| | +++++ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0282`. |