| error[E0308]: mismatched types | |
| --> $DIR/issue-15896.rs:11:11 | |
| | | |
| LL | let u = match e { | |
| | - this expression has type `main::E` | |
| LL | E::B( | |
| LL | Tau{t: x}, | |
| | ^^^^^^^^^ expected enum `main::R`, found struct `main::Tau` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0308`. |