MC warns about racing

[colemanomartin]

I use widget player to post two widgets to a slide when the player drains a ball. Here is the yaml.
widget_player:
balldevice_bd_trough_ball_enter:
left_drain:
slide: blank_transparent
right_drain:
slide: blank_transparent

This seems to work fine but in my log MC repeats a warning nearly verbatim 4 times, which makes me think I am doing something wrong. Is there a different way to add multiple widgets to a slide on an event which does not make MC cranky?

2023-02-19 15:15:18,773 : EventManager : Event: ======'widgets_play'====== Args={'settings': {'left_drain': {'slide': 'blank_transparent', 'priority': 0, 'action': 'add', 'key': None, 'target': None}, 'right_drain': {'slide': 'blank_transparent', 'priority': 0, 'action': 'add', 'key': None, 'target': None}}, 'context': 'sweep_server', 'calling_context': 'balldevice_bd_trough_ball_enter', 'priority': 3000, 'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}
2023-02-19 15:15:18,774 : EventManager : Unordered handler for class McConfigPlayer.widgets on event slide_blank_transparent_created with priority 0. Handlers: [RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'triangle_scoop_sweep', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-triangle_scoop_sweep', 'target': None}, 'play_kwargs': {}}, key=UUID('846a9923-13b4-4ccf-b849-42e85fb7cd3e'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'right_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-right_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('37b4a8e0-67be-44d4-bb0c-0e9fbca26022'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'left_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-left_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('c50a949d-d256-4afd-92c8-00a6c282daa2'), condition=None, blocking_facility=None)]. The order of those handlers is not defined and they will be executed in random order. This might lead to race conditions and potential bugs.
2023-02-19 15:15:18,774 : EventManager : Unordered handler for class McConfigPlayer.widgets on event slide_blank_transparent_created with priority 0. Handlers: [RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'triangle_scoop_sweep', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-triangle_scoop_sweep', 'target': None}, 'play_kwargs': {}}, key=UUID('846a9923-13b4-4ccf-b849-42e85fb7cd3e'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'right_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-right_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('37b4a8e0-67be-44d4-bb0c-0e9fbca26022'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'left_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-left_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('c50a949d-d256-4afd-92c8-00a6c282daa2'), condition=None, blocking_facility=None)]. The order of those handlers is not defined and they will be executed in random order. This might lead to race conditions and potential bugs.
2023-02-19 15:15:18,780 : EventManager : Unordered handler for class McConfigPlayer.widgets on event slide_blank_transparent_created with priority 0. Handlers: [RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'triangle_scoop_sweep', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-triangle_scoop_sweep', 'target': None}, 'play_kwargs': {}}, key=UUID('846a9923-13b4-4ccf-b849-42e85fb7cd3e'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'left_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-left_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('c50a949d-d256-4afd-92c8-00a6c282daa2'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'right_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-right_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('47143fa5-89c0-4512-960a-e49d8e1bad06'), condition=None, blocking_facility=None)]. The order of those handlers is not defined and they will be executed in random order. This might lead to race conditions and potential bugs.
2023-02-19 15:15:18,780 : EventManager : Unordered handler for class McConfigPlayer.widgets on event slide_blank_transparent_created with priority 0. Handlers: [RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'triangle_scoop_sweep', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-triangle_scoop_sweep', 'target': None}, 'play_kwargs': {}}, key=UUID('846a9923-13b4-4ccf-b849-42e85fb7cd3e'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'left_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-left_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('c50a949d-d256-4afd-92c8-00a6c282daa2'), condition=None, blocking_facility=None), RegisteredHandler(callback=, priority=0, kwargs={'slide_name': 'blank_transparent', 'widget': 'right_drain', 's': {'slide': 'blank_transparent', 'key': 'sweep_server-right_drain', 'target': None}, 'play_kwargs': {'new_balls': 1, 'unclaimed_balls': 1, 'new_available_balls': 1, 'device': '<ball_device.bd_trough>'}}, key=UUID('47143fa5-89c0-4512-960a-e49d8e1bad06'), condition=None, blocking_facility=None)]. The order of those handlers is not defined and they will be executed in random order. This might lead to race conditions and potential bugs.

[cobra18t]

I have seen this too and would love to have an answer. I am wondering if this is a reason why sometimes my games stalls after the end of a game before it goes back to attract mode. The stall can be anywhere from 1-45 seconds.