| error[E0308]: mismatched types | |
| --> $DIR/issue-3680.rs:13:9 | |
| | | |
| LL | Err(_) => () | |
| | ^^^^^^ expected enum `std::option::Option`, found enum `std::result::Result` | |
| | | |
| = note: expected type `std::option::Option<_>` | |
| found type `std::result::Result<_, _>` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0308`. |