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27 lines
1.2 KiB
Plaintext
27 lines
1.2 KiB
Plaintext
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error[E0277]: `?` couldn't convert the error: `E: std::error::Error` is not satisfied
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--> $DIR/bad-question-mark-on-trait-object.rs:5:13
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LL | fn foo() -> Result<(), Box<dyn std::error::Error>> {
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| -------------------------------------- required `E: std::error::Error` because of this
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LL | Ok(bar()?)
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| ^ the trait `std::error::Error` is not implemented for `E`
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= note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
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= note: required for `Box<dyn std::error::Error>` to implement `From<E>`
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error[E0277]: `?` couldn't convert the error to `X`
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--> $DIR/bad-question-mark-on-trait-object.rs:15:13
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LL | fn bat() -> Result<(), X> {
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| ------------- expected `X` because of this
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LL | Ok(bar()?)
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| -----^ the trait `From<E>` is not implemented for `X`
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| this can't be annotated with `?` because it has type `Result<_, E>`
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= note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0277`.
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