| error[E0308]: mismatched types | |
| --> $DIR/fully-qualified-type-name4.rs:6:12 | |
| | | |
| LL | fn bar(x: usize) -> Option<usize> { | |
| | ------------- expected `std::option::Option<usize>` because of return type | |
| LL | return x; | |
| | ^ expected enum `std::option::Option`, found usize | |
| | | |
| = note: expected type `std::option::Option<usize>` | |
| found type `usize` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0308`. |