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error: `#[cfg_attr]` does not expand to any attributes
--> $DIR/cfg-attr-empty-is-unused.rs:5:1
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LL | #[cfg_attr(FALSE,)]
| ^^^^^^^^^^^^^^^^^^^
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note: the lint level is defined here
--> $DIR/cfg-attr-empty-is-unused.rs:3:9
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LL | #![deny(unused)]
| ^^^^^^
= note: `#[deny(unused_attributes)]` implied by `#[deny(unused)]`
error: `#[cfg_attr]` does not expand to any attributes
--> $DIR/cfg-attr-empty-is-unused.rs:8:1
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LL | #[cfg_attr(not(FALSE),)]
| ^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 2 previous errors
|
