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error[E0277]: the `?` operator can only be applied to values that implement `Try`
--> $DIR/issue-84841.rs:9:5
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LL | test()?;
| ^^^^^^^ the `?` operator cannot be applied to type `impl Future<Output = ()>`
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= help: the trait `Try` is not implemented for `impl Future<Output = ()>`
error[E0277]: the `?` operator can only be used in an async function that returns `Result` or `Option` (or another type that implements `FromResidual`)
--> $DIR/issue-84841.rs:9:11
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LL | async fn foo() {
| ________________-
LL | | // Adding an .await here avoids the ICE
LL | | test()?;
| | ^ cannot use the `?` operator in an async function that returns `()`
LL | |
LL | |
LL | | }
| |_- this function should return `Result` or `Option` to accept `?`
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= help: the trait `FromResidual<_>` is not implemented for `()`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
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