error[E0658]: `#[doc(spotlight)]` is experimental
  --> $DIR/feature-gate-doc_spotlight.rs:1:1
   |
LL | #[doc(spotlight)]
   | ^^^^^^^^^^^^^^^^^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/45040
   = 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`.