1 error[E0277]: `?` couldn't convert the error to `()`
2 --> $DIR/issue-32709.rs:4:11
4 LL | fn a() -> Result<i32, ()> {
5 | --------------- expected `()` because of this
7 | ^ the trait `From<{integer}>` is not implemented for `()`
9 = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
10 = help: the following other types implement trait `FromResidual<R>`:
11 <Result<T, F> as FromResidual<Result<Infallible, E>>>
12 <Result<T, F> as FromResidual<Yeet<E>>>
13 = note: required for `Result<i32, ()>` to implement `FromResidual<Result<Infallible, {integer}>>`
15 error: aborting due to previous error
17 For more information about this error, try `rustc --explain E0277`.