src/test/ui/hygiene/generic_params.stderr

   1 warning: the feature `const_generics` is incomplete and may not be safe to use and/or cause compiler crashes
   2   --> $DIR/generic_params.rs:6:37
   3    |
   4 LL | #![feature(decl_macro, rustc_attrs, const_generics)]
   5    |                                     ^^^^^^^^^^^^^^
   6    |
   7    = note: `#[warn(incomplete_features)]` on by default
   8    = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
   9
  10 warning: 1 warning emitted
  11