| error[E0282]: type annotations needed for the closure `fn(Expr<'_, _>) -> Expr<'_, _>` | |
| --> $DIR/issue-23046.rs:18:9 | |
| | | |
| LL | let_(add(x,x), |y| { | |
| | ^^^^ cannot infer type for type parameter `VAR` declared on the function `let_` | |
| | | |
| help: give this closure an explicit return type without `_` placeholders | |
| | | |
| LL | let_(add(x, x), |x|-> Expr<'_, _> { x })})}; | |
| | ^^^^^^^^^^^^^^^^ ^ | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0282`. |