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error[E0308]: mismatched types
--> $DIR/issue-94176.rs:5:32
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LL | pub fn test(a: Option<u32>) -> Option<u32> {
| ---- ^^^^^^^^^^^ expected enum `Option`, found `()`
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| implicitly returns `()` as its body has no tail or `return` expression
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= note: expected enum `Option<u32>`
found unit type `()`
help: consider returning the local binding `a`
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LL ~ println!("Foo");
LL + a
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error: aborting due to previous error
For more information about this error, try `rustc --explain E0308`.
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