error[E0733]: recursion in a coroutine requires boxing
  --> $DIR/recursive-coroutine-indirect.rs:11:18
   |
LL |     #[coroutine] move || {
   |                  ^^^^^^^
LL |         let x = coroutine_hold();
   |             - recursive call here

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0733`.