1error[E0277]: the trait bound `u8: merge::Merge` is not satisfied
2 --> $DIR/derive-u8.rs:9:5
3  |
49 |     field2: u8,
5  |     ^^^^^^ the trait `merge::Merge` is not implemented for `u8`
6  |
7  = note: required by `merge::Merge::merge`
8