Esteban Küber 31febc684b Point at type that doesn't implement needed trait ...

```
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
```

2025-02-21 18:30:07 +00:00

..

bad-interconversion.rs

…

bad-interconversion.stderr

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bad-question-mark-on-trait-object.rs

Point at type that doesn't implement needed trait

2025-02-21 18:30:07 +00:00

bad-question-mark-on-trait-object.stderr

Point at type that doesn't implement needed trait

2025-02-21 18:30:07 +00:00

issue-32709.rs

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issue-32709.stderr

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option-to-result.rs

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option-to-result.stderr

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try-as-monad.rs

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try-on-option-diagnostics.rs

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try-on-option-diagnostics.stderr

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try-on-option.rs

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try-on-option.stderr

…

try-operator-custom.rs

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try-operator-on-main.rs

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try-operator-on-main.stderr

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try-poll.rs

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yeet-for-option.rs

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yeet-for-result.rs

…