error[E0658]: #[doc(spotlight)] is experimental (see issue #45040)
  --> $DIR/feature-gate-doc_spotlight.rs:11:1
   |
LL | #[doc(spotlight)] //~ ERROR: #[doc(spotlight)] is experimental
   | ^^^^^^^^^^^^^^^^^
   |
   = help: add #![feature(doc_spotlight)] to the crate attributes to enable

error: aborting due to previous error

For more information about this error, try `rustc --explain E0658`.