1 error: `#[cfg_attr]` does not expand to any attributes
2 --> $DIR/cfg-attr-empty-is-unused.rs:7:1
4 LL | #[cfg_attr(FALSE,)]
7 note: the lint level is defined here
8 --> $DIR/cfg-attr-empty-is-unused.rs:5:9
12 = note: `#[deny(unused_attributes)]` implied by `#[deny(unused)]`
14 error: `#[cfg_attr]` does not expand to any attributes
15 --> $DIR/cfg-attr-empty-is-unused.rs:10:1
17 LL | #[cfg_attr(TRUE,)]
20 error: aborting due to 2 previous errors