tests/ui/issues/issue-13482-2.stderr

error[E0527]: pattern requires 0 elements but array has 2
  --> $DIR/issue-13482-2.rs:6:9
   |
LL |         [] => None,
   |         ^^ expected 2 elements

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0527`.