1 error[E0308]: mismatched types
2 --> $DIR/issue-11844.rs:6:9
5 | - this match expression has type `std::option::Option<std::boxed::Box<{integer}>>`
6 LL | Ok(a) => //~ ERROR: mismatched types
7 | ^^^^^ expected enum `std::option::Option`, found enum `std::result::Result`
9 = note: expected type `std::option::Option<std::boxed::Box<{integer}>>`
10 found type `std::result::Result<_, _>`
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0308`.