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@@ -0,0 +1,17 @@
+error[E0277]: `?` couldn't convert the error to `()`
+ --> $DIR/issue-32709.rs:4:11
+ |
+LL | fn a() -> Result<i32, ()> {
+ | --------------- expected `()` because of this
+LL | Err(5)?;
+ | ^ the trait `From<{integer}>` is not implemented for `()`
+ |
+ = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
+ = help: the following other types implement trait `FromResidual<R>`:
+ <Result<T, F> as FromResidual<Result<Infallible, E>>>
+ <Result<T, F> as FromResidual<Yeet<E>>>
+ = note: required for `Result<i32, ()>` to implement `FromResidual<Result<Infallible, {integer}>>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.