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Improve CommandEventHandler subprocess failure error message
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@ -129,7 +129,7 @@ class CommandEventHandler(PipeIOEventHandler):
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return_code = self._proc.wait()
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if return_code != 0:
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_, stderr = self._proc.communicate()
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raise RuntimeError(f'Subprocess failed: {stderr.decode()}')
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raise RuntimeError(f'Subprocess failed ({return_code})! Stderr:\n{stderr.decode()}')
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def cleanup(self):
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with suppress(ProcessLookupError):
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