error: variant `Variant2` is never constructed
  --> $DIR/lint-dead-code-5.rs:6:5
   |
LL | enum Enum1 {
   |      ----- variant in this enum
LL |     Variant1(#[allow(dead_code)] isize),
LL |     Variant2
   |     ^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/lint-dead-code-5.rs:2:9
   |
LL | #![deny(dead_code)]
   |         ^^^^^^^^^

error: variants `Variant5` and `Variant6` are never constructed
  --> $DIR/lint-dead-code-5.rs:13:5
   |
LL | enum Enum2 {
   |      ----- variants in this enum
...
LL |     Variant5 { _x: isize },
   |     ^^^^^^^^
LL |     Variant6(isize),
   |     ^^^^^^^^

error: enum `Enum3` is never used
  --> $DIR/lint-dead-code-5.rs:35:6
   |
LL | enum Enum3 {
   |      ^^^^^

error: aborting due to 3 previous errors