error[E0609]: no field `b` on type `&remote::S`
  --> $DIR/unknown_field.rs:21:5
   |
21 |     b: u8,
   |     ^

error[E0560]: struct `remote::S` has no field named `b`
  --> $DIR/unknown_field.rs:21:5
   |
21 |     b: u8,
   |     ^ field does not exist - did you mean `a`?

error: aborting due to 2 previous errors

Some errors occurred: E0560, E0609.
For more information about an error, try `rustc --explain E0560`.