error[E0609]: no field `b` on type `&remote::S`
  --> tests/ui/remote/unknown_field.rs:12:5
   |
12 |     b: u8,
   |     ^ unknown field

error[E0560]: struct `remote::S` has no field named `b`
  --> tests/ui/remote/unknown_field.rs:12:5
   |
12 |     b: u8,
   |     ^ `remote::S` does not have this field
   |
   = note: all struct fields are already assigned