1error[E0308]: mismatched types 2 --> $DIR/derive-invalid-strategy.rs:8:24 3 | 48 | #[merge(strategy = my_custom_merge_strategy)] 5 | ________________________^ 69 | | field1: u8, 7 | |__________^ expected `u8`, found `&mut u8` 8 | 9help: consider removing the borrow 10 | 118 | #[merge(strategy = my_custom_merge_strategy)] 129 | field1: u8, 13 | 14