error[E0081]: discriminant value `3` already exists
  --> $DIR/E0081.rs:4:9
   |
LL |     P = 3,
   |         - first use of `3`
LL |
LL |     X = 3,
   |         ^ enum already has `3`

error[E0081]: discriminant value `1` already exists
  --> $DIR/E0081.rs:14:9
   |
LL |     P = 257,
   |         --- first use of `1` (overflowed from `257`)
LL |
LL |     X = 513,
   |         ^^^ enum already has `1` (overflowed from `513`)

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0081`.