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error[E0308]: mismatched types
--> $DIR/coerce-result-return-value-2.rs:8:17
|
LL | fn foo4(x: Result<(), A>) -> Result<(), B> {
| ------------- expected `Result<(), B>` because of return type
LL | match true {
LL | true => x,
| ^ expected `Result<(), B>`, found `Result<(), A>`
|
= note: expected enum `Result<_, B>`
found enum `Result<_, A>`
help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
|
LL | true => Ok(x?),
| +++ ++
error[E0308]: mismatched types
--> $DIR/coerce-result-return-value-2.rs:14:24
|
LL | fn foo5(x: Result<(), A>) -> Result<(), B> {
| ------------- expected `Result<(), B>` because of return type
LL | match true {
LL | true => return x,
| ^ expected `Result<(), B>`, found `Result<(), A>`
|
= note: expected enum `Result<_, B>`
found enum `Result<_, A>`
help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
|
LL | true => return Ok(x?),
| +++ ++
error[E0308]: mismatched types
--> $DIR/coerce-result-return-value-2.rs:21:28
|
LL | let _: Result<(), B> = {
| ____________________________^
LL | | Err(A);
LL | | };
| |_____^ expected `Result<(), B>`, found `()`
|
= note: expected enum `Result<(), B>`
found unit type `()`
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0308`.
|
