tests/ui/issues/issue-26812.stderr

   1 error[E0128]: generic parameters with a default cannot use forward declared identifiers
   2   --> $DIR/issue-26812.rs:3:10
   3    |
   4 LL | fn avg<T=T::Item>(_: T) {}
   5    |          ^^^^^^^ defaulted generic parameters cannot be forward declared
   6
   7 error: aborting due to previous error
   8
   9 For more information about this error, try `rustc --explain E0128`.