1 error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in type
2 --> $DIR/issue-86642.rs:1:11
4 LL | static x: impl Fn(&str) -> Result<&str, ()> = move |source| {
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0562`.