mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
16 lines
641 B
Plaintext
16 lines
641 B
Plaintext
error[E0053]: method `next` has an incompatible type for trait
|
|
--> $DIR/issue-21332.rs:5:27
|
|
|
|
|
LL | fn next(&mut self) -> Result<i32, i32> { Ok(7) }
|
|
| ^^^^^^^^^^^^^^^^
|
|
| |
|
|
| expected enum `Option`, found enum `Result`
|
|
| help: change the output type to match the trait: `Option<i32>`
|
|
|
|
|
= note: expected signature `fn(&mut S) -> Option<i32>`
|
|
found signature `fn(&mut S) -> Result<i32, i32>`
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0053`.
|