KeyError with _rcv_buffer

[pmoosman]

We encountered the following KeyError while running latest version, 2.0.12:

Traceback (most recent call last):
File "/usr/local/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
    self.run()
File "/usr/local/lib/python3.10/threading.py", line 953, in run
    self._target(*self._args, **self._kwargs)
File "/usr/local/lib/python3.10/site-packages/j1939/electronic_control_unit.py", line 282, in _async_job_thread
    next_wakeup = self.j1939_dll.async_job_thread(now)
File "/usr/local/lib/python3.10/site-packages/j1939/j1939_21.py", line 162, in async_job_thread
    buf = self._rcv_buffer[bufid]
KeyError: 33023

Here is the code snippet:

      # check receive buffers for timeout
       # using "list(x)" to prevent "RuntimeError: dictionary changed size during iteration"
       for bufid in list(self._rcv_buffer):
           buf = self._rcv_buffer[bufid]

My guess is that try catch block should wrap "buf = self._rcv_buffer[bufid]" to catch the key error.

I assume a different thread has deleted that particular bufid inbetween the "for in" statement and the dictionary lookup.

Thoughts?