error: Union Union is not an enum, EnumRotate can only be derived for enums
 --> tests/compilation_failure_tests/non_enum/union_nonempty.rs:4:1
  |
4 | / union Union {
5 | |     field1: usize,
6 | |     field2: u8,
7 | | }
  | |_^

error[E0601]: `main` function not found in crate `$CRATE`
 --> tests/compilation_failure_tests/non_enum/union_nonempty.rs:7:2
  |
7 | }
  |  ^ consider adding a `main` function to `$DIR/tests/compilation_failure_tests/non_enum/union_nonempty.rs`