src/test/ui/feature-gates/feature-gate-doc_alias.stderr

   1 error[E0658]: `#[doc(alias)]` is experimental
   2   --> $DIR/feature-gate-doc_alias.rs:1:1
   3    |
   4 LL | #[doc(alias = "foo")]
   5    | ^^^^^^^^^^^^^^^^^^^^^
   6    |
   7    = note: see issue #50146 <https://github.com/rust-lang/rust/issues/50146> for more information
   8    = help: add `#![feature(doc_alias)]` to the crate attributes to enable
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0658`.