mirror of https://github.com/rust-lang/rust
66 lines
2.4 KiB
Plaintext
66 lines
2.4 KiB
Plaintext
error[E0308]: mismatched types
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--> $DIR/coerce-result-return-value.rs:8:5
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LL | fn foo1(x: Result<(), A>) -> Result<(), B> {
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| ------------- expected `Result<(), B>` because of return type
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LL | x
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| ^ expected `Result<(), B>`, found `Result<(), A>`
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= note: expected enum `Result<_, B>`
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found enum `Result<_, A>`
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help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
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LL | Ok(x?)
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| +++ ++
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error[E0308]: mismatched types
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--> $DIR/coerce-result-return-value.rs:11:12
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LL | fn foo2(x: Result<(), A>) -> Result<(), B> {
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| ------------- expected `Result<(), B>` because of return type
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LL | return x;
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| ^ expected `Result<(), B>`, found `Result<(), A>`
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= note: expected enum `Result<_, B>`
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found enum `Result<_, A>`
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help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
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LL | return Ok(x?);
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| +++ ++
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error[E0308]: mismatched types
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--> $DIR/coerce-result-return-value.rs:15:9
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LL | fn foo3(x: Result<(), A>) -> Result<(), B> {
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| ------------- expected `Result<(), B>` because of return type
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LL | if true {
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LL | x
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| ^ expected `Result<(), B>`, found `Result<(), A>`
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= note: expected enum `Result<_, B>`
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found enum `Result<_, A>`
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help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
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LL | Ok(x?)
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| +++ ++
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error[E0308]: mismatched types
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--> $DIR/coerce-result-return-value.rs:17:9
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LL | fn foo3(x: Result<(), A>) -> Result<(), B> {
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| ------------- expected `Result<(), B>` because of return type
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...
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LL | x
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| ^ expected `Result<(), B>`, found `Result<(), A>`
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= note: expected enum `Result<_, B>`
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found enum `Result<_, A>`
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help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
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LL | Ok(x?)
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| +++ ++
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error: aborting due to 4 previous errors
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For more information about this error, try `rustc --explain E0308`.
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