| error[E0282]: type annotations needed for `Option<T>` | |
| --> $DIR/copy-guessing.rs:20:9 | |
| | | |
| LL | let n = None; | |
| | ^ ---- type must be known at this point | |
| | | |
| help: consider giving `n` an explicit type, where the type for type parameter `T` is specified | |
| | | |
| LL | let n: Option<T> = None; | |
| | +++++++++++ | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0282`. |