error[E0277]: the trait bound `Option<u8>: Merge` is not satisfied
 --> tests/compile/derive-u8.rs:8:5
  |
8 |     field1: Option<u8>,
  |     ^^^^^^ the trait `Merge` is not implemented for `Option<u8>`
  |
  = help: the trait `Merge` is implemented for `S`

error[E0277]: the trait bound `u8: Merge` is not satisfied
 --> tests/compile/derive-u8.rs:9:5
  |
9 |     field2: u8,
  |     ^^^^^^ the trait `Merge` is not implemented for `u8`
  |
  = help: the trait `Merge` is implemented for `S`