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error[E0308]: mismatched types
--> $DIR/question-mark-operator-suggestion-span.rs:18:9
|
LL | / if true {
LL | | writeln!(w, "`;?` here ->")?;
LL | | } else {
LL | | writeln!(w, "but not here")
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `Result<(), Error>`
LL | |
LL | | }
| |_____- expected this to be `()`
|
= note: expected unit type `()`
found enum `Result<(), std::fmt::Error>`
= note: this error originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider using a semicolon here
|
LL | };
| +
help: you might have meant to return this value
|
LL | return writeln!(w, "but not here");
| ++++++ +
help: use the `?` operator to extract the `Result<(), std::fmt::Error>` value, propagating a `Result::Err` value to the caller
|
LL | writeln!(w, "but not here")?
| +
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0308`.
|
