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Fix AttributeError: 'NoneType' object has no attribute 'returncode'
Fix #976
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@ -199,7 +199,7 @@ class Hypervisor(UBridgeHypervisor):
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try:
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yield from wait_for_process_termination(self._process, timeout=3)
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except asyncio.TimeoutError:
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if self._process.returncode is None:
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if self._process and self._process.returncode is None:
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log.warn("uBridge process {} is still running... killing it".format(self._process.pid))
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try:
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self._process.kill()
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