error: unions are not supported
 --> $DIR/unsupported_type_union.rs:4:1
  |
4 | / union Foo {
5 | |     a: i32,
6 | | }
  | |_^

error: unions are not supported
  --> $DIR/unsupported_type_union.rs:9:1
   |
9  | / union Bar {
10 | |     a: i32,
11 | | }
   | |_^