error: index out of bounds: the len is 1 but the index is 1
  --> $DIR/const-prop-ice2.rs:4:20
   |
LL |     println!("{}", xs[Enum::One as usize]);
   |                    ^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[deny(const_err)]` on by default

error: aborting due to previous error