Celery task scheduling

[maxcountryman]

I'm having some issues with Celery picking up tasks: while I can see the scheduler is running and looking for tasks I can also see the workers never pick up jobs or do anything useful.

My Procfile is pretty straightforward:

web: airflow webserver -p $PORT
worker: airflow worker
scheduler: airflow scheduler

Nothing seems obviously wrong in Heroku or the AIrflow web UI apart from the tasks not being executed.

Any pointers?