mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 23:34:48 +00:00
18 lines
800 B
Plaintext
18 lines
800 B
Plaintext
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`.
|