tests/ui/error-codes/E0128.stderr

   1 error[E0128]: generic parameters with a default cannot use forward declared identifiers
   2   --> $DIR/E0128.rs:1:14
   3    |
   4 LL | struct Foo<T=U, U=()> {
   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`.