31febc684b
```
error[E0277]: `?` couldn't convert the error: `E: std::error::Error` is not satisfied
--> $DIR/bad-question-mark-on-trait-object.rs:7:13
|
LL | fn foo() -> Result<(), Box<dyn std::error::Error>> {
| -------------------------------------- required `E: std::error::Error` because of this
LL | Ok(bar()?)
| -----^ the trait `std::error::Error` is not implemented for `E`
| |
| this has type `Result<_, E>`
|
note: `E` needs to implement `std::error::Error`
--> $DIR/bad-question-mark-on-trait-object.rs:1:1
|
LL | struct E;
| ^^^^^^^^
= note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
= note: required for `Box<dyn std::error::Error>` to implement `From<E>`
error[E0277]: `?` couldn't convert the error to `X`
--> $DIR/bad-question-mark-on-trait-object.rs:18:13
|
LL | fn bat() -> Result<(), X> {
| ------------- expected `X` because of this
LL | Ok(bar()?)
| -----^ the trait `From<E>` is not implemented for `X`
| |
| this can't be annotated with `?` because it has type `Result<_, E>`
|
note: `X` needs to implement `From<E>`
--> $DIR/bad-question-mark-on-trait-object.rs:4:1
|
LL | struct X;
| ^^^^^^^^
note: alternatively, `E` needs to implement `Into<X>`
--> $DIR/bad-question-mark-on-trait-object.rs:1:1
|
LL | struct E;
| ^^^^^^^^
= note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
```
|
||
|---|---|---|
| .. | ||
| bad-interconversion.rs | ||
| bad-interconversion.stderr | ||
| bad-question-mark-on-trait-object.rs | ||
| bad-question-mark-on-trait-object.stderr | ||
| issue-32709.rs | ||
| issue-32709.stderr | ||
| option-to-result.rs | ||
| option-to-result.stderr | ||
| try-as-monad.rs | ||
| try-on-option-diagnostics.rs | ||
| try-on-option-diagnostics.stderr | ||
| try-on-option.rs | ||
| try-on-option.stderr | ||
| try-operator-custom.rs | ||
| try-operator-on-main.rs | ||
| try-operator-on-main.stderr | ||
| try-poll.rs | ||
| yeet-for-option.rs | ||
| yeet-for-result.rs | ||