1 error[E0005]: refutable pattern in local binding: `T(_, _)` not covered
2 --> $DIR/empty-never-array.rs:20:9
4 LL | let Helper::U(u) = Helper::T(t, []);
5 | ^^^^^^^^^^^^ pattern `T(_, _)` not covered
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0005`.