#NEWLINE# def errReceived( self , data ) : #NEWLINE# #INDENT# '\n        :api:`twisted.internet.protocol.ProcessProtocol <ProcessProtocol>` API\n        ' #NEWLINE# if self . stderr : #NEWLINE# #INDENT# self . stderr . write ( data ) #NEWLINE# #UNINDENT# if self . kill_on_stderr : #NEWLINE# #INDENT# self . transport . loseConnection ( ) #NEWLINE# raise RuntimeError ( ( 'Received stderr output from slave Tor process: ' + data ) )