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 enum `std::option::Option<usize>` | |
found type `usize` | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0308`. |