| warning: unused attribute | |
| --> $DIR/cfg-eval.rs:22:5 | |
| | | |
| LL | #[cfg_attr(true, allow())] | |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove this attribute | |
| | | |
| = note: attribute `allow` with an empty list has no effect | |
| = note: requested on the command line with `-W unused-attributes` | |
| warning: 1 warning emitted | |