| error[E0282]: type annotations needed for the closure `fn((), ()) -> Result<(), _>` | |
| --> $DIR/cannot-infer-closure.rs:4:9 | |
| | | |
| LL | Ok(b) | |
| | ^^ cannot infer type for type parameter `E` declared on the enum `Result` | |
| | | |
| help: give this closure an explicit return type without `_` placeholders | |
| | | |
| LL | let x = |a: (), b: ()| -> Result<(), _> { | |
| | ^^^^^^^^^^^^^^^^ | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0282`. |