error: enum `E` is never used --> $DIR/empty-unused-enum.rs:3:6 | LL | enum E {} | ^ | note: the lint level is defined here --> $DIR/empty-unused-enum.rs:1:9 | LL | #![deny(unused)] | ^^^^^^ = note: `#[deny(dead_code)]` implied by `#[deny(unused)]` error: aborting due to previous error