error: variant is never constructed: `Variant1`
  --> $DIR/unused-variant.rs:5:5
   |
LL |     Variant1,
   |     ^^^^^^^^
   |
note: lint level defined here
  --> $DIR/unused-variant.rs:1:9
   |
LL | #![deny(dead_code)]
   |         ^^^^^^^^^

error: aborting due to previous error