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

Async stacks count: 0
Scheduled async tasks: 0
Created async tasks: 0
Async tasks with parent: 0
Recurring async tasks: 0

Async stacks count: 2
Scheduled async tasks: 0
Created async tasks: 2
Async tasks with parent: 2
Recurring async tasks: 0

Async stacks count: 0
Scheduled async tasks: 0
Created async tasks: 0
Async tasks with parent: 0
Recurring async tasks: 0

Async stacks count: 1
Scheduled async tasks: 1
Created async tasks: 0
Async tasks with parent: 0
Recurring async tasks: 0

Async stacks count: 0
Scheduled async tasks: 0
Created async tasks: 0
Async tasks with parent: 0
Recurring async tasks: 0