1 error[E0308]: mismatched types
2 --> $DIR/issue-12552.rs:6:5
5 | - this match expression has type `std::result::Result<_, {integer}>`
6 LL | Some(k) => match k {
7 | ^^^^^^^ expected enum `std::result::Result`, found enum `std::option::Option`
9 = note: expected type `std::result::Result<_, {integer}>`
10 found type `std::option::Option<_>`
12 error[E0308]: mismatched types
13 --> $DIR/issue-12552.rs:9:5
16 | ^^^^ expected enum `std::result::Result`, found enum `std::option::Option`
18 = note: expected type `std::result::Result<_, {integer}>`
19 found type `std::option::Option<_>`
21 error: aborting due to 2 previous errors
23 For more information about this error, try `rustc --explain E0308`.