def _output_to_list(cmdoutput):
    '''
    Convert rabbitmqctl output to a list of strings (assuming whitespace-delimited output).
    Ignores output lines that shouldn't be parsed, like warnings.
    cmdoutput: string output of rabbitmqctl commands
    '''
    return [item for line in cmdoutput.splitlines() if _safe_output(line) for item in line.split()]