1 error[E0308]: mismatched types
2 --> $DIR/issue-46112.rs:19:21
4 LL | fn main() { test(Ok(())); }
7 | expected enum `std::option::Option`, found ()
8 | help: try using a variant of the expected type: `Some(())`
10 = note: expected type `std::option::Option<()>`
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0308`.