Detected heartbeat at db2069.codfw.wmnet running with PID 10645
Restarting new master replication (both threads)
Traceback (most recent call last):
  File "./switchover.py", line 626, in <module>
    main()
  File "./switchover.py", line 610, in main
    setup_new_master_replication(slave_replication, old_master_slave_status)
  File "./switchover.py", line 271, in setup_new_master_replication
    if not result['success']:
TypeError: 'bool' object is not subscriptable