error[E0076]: SIMD vector's only field must be an array
  --> $DIR/monomorphize-heterogeneous.rs:4:1
   |
LL | struct I64F64(i64, f64);
   | ^^^^^^^^^^^^^ --- not an array

error[E0075]: SIMD vector cannot have multiple fields
  --> $DIR/monomorphize-heterogeneous.rs:8:1
   |
LL | struct I64x4F64x0([i64; 4], [f64; 0]);
   | ^^^^^^^^^^^^^^^^^           -------- excess field

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0075, E0076.
For more information about an error, try `rustc --explain E0075`.