1 error[E0282]: type annotations needed for `Expr<'_, VAR>`
2 --> $DIR/issue-23046.rs:17:15
5 | ^ consider giving this closure parameter the explicit type `Expr<'_, VAR>`, where the type parameter `VAR` is specified
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0282`.