error[E0271]: type mismatch resolving `<{coroutine@$DIR/issue-94429.rs:18:9: 18:16} as Coroutine>::Yield == ()`
  --> $DIR/issue-94429.rs:15:26
   |
LL |     fn run(&mut self) -> Self::Coro {
   |                          ^^^^^^^^^^ expected `()`, found integer

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0271`.