error: cannot map already mapped field 'a'
 --> $DIR/dto_derive_map_attr.rs:6:6
  |
6 | #[dto(map = "a: c")] //~ ERROR cannot map already mapped field 'a'
  |      ^^^^^^^^^^^^^^

error: cannot map non-existent field 'c'
 --> $DIR/dto_derive_map_attr.rs:9:28
  |
9 | #[derive(Debug, PartialEq, Dto)] //~ ERROR cannot map non-existent field 'c'
  |                            ^^^

error: cannot map non-existent field 'c'
  --> $DIR/dto_derive_map_attr.rs:20:28
   |
20 | #[derive(Debug, PartialEq, Dto)] //~ ERROR cannot map non-existent field 'c'
   |                            ^^^

error: aborting due to 3 previous errors