and started an example nodelet that prints 'hello world' , when i push messages from outside by ros..

now the question is how i should gracefully stop these nodelets and let them unsubscribe/die gracefully..

because i now have 4 instances of ROSMaster in my image and all locked by waiting for some mutex/semaphores and��

telling them 'stop' waits forever and blocks everything..

How i can clean this up?

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