error[E0559]: variant `Field::Fool` has no field named `joke`
  --> $DIR/E0559.rs:16:27
   |
16 |     let s = Field::Fool { joke: 0 };
   |                           ^^^^ `Field::Fool` does not have this field
   |
   = note: available fields are: `x`

error: aborting due to previous error

If you want more information on this error, try using "rustc --explain E0559"