error[E0733]: recursion in an async fn requires boxing
  --> $DIR/indirect-recursion-issue-112047.rs:34:5
   |
LL |     async fn second(self) {
   |     ^^^^^^^^^^^^^^^^^^^^^
   |
   = note: a recursive `async fn` call must introduce indirection such as `Box::pin` to avoid an infinitely sized future

error: aborting due to 1 previous error

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