src/test/ui/async-await/issues/issue-78654.full.stderr

   1 error[E0573]: expected type, found built-in attribute `feature`
   2   --> $DIR/issue-78654.rs:9:15
   3    |
   4 LL | impl<const H: feature> Foo {
   5    |               ^^^^^^^ not a type
   6
   7 error[E0207]: the const parameter `H` is not constrained by the impl trait, self type, or predicates
   8   --> $DIR/issue-78654.rs:9:12
   9    |
  10 LL | impl<const H: feature> Foo {
  11    |            ^ unconstrained const parameter
  12    |
  13    = note: expressions using a const parameter must map each value to a distinct output value
  14    = note: proving the result of expressions other than the parameter are unique is not supported
  15
  16 error: aborting due to 2 previous errors
  17
  18 Some errors have detailed explanations: E0207, E0573.
  19 For more information about an error, try `rustc --explain E0207`.