Checks that we collect obsolete async tasks with async stacks.
Async stacks count: 1
Scheduled async tasks: 1
Recurring async tasks: 0
Async stacks count: 0 Scheduled async tasks: 0 Recurring async tasks: 0 Async stacks count: 2
Scheduled async tasks: 2
Recurring async tasks: 0 Async stacks count: 0 Scheduled async tasks: 0 Recurring async tasks: 0 Async stacks count: 1 Scheduled async tasks: 1 Recurring async tasks: 0 Async stacks count: 0 Scheduled async tasks: 0 Recurring async tasks: 0