traceback in callee on hard killing of a caller

hard killing a caller results in a callee traceback (on container components over rawsocket):

2019-03-02T16:34:36+0100 [Container   25923] Traceback (most recent call last):
  File "/home/oberstet/scm/crossbario/autobahn-python/autobahn/wamp/websocket.py", line 95, in onMessage
    self._session.onMessage(msg)
  File "/home/oberstet/scm/crossbario/autobahn-python/autobahn/wamp/protocol.py", line 1027, in onMessage
    raise ProtocolError("INTERRUPT received for non-pending invocation {0}".format(msg.request))
autobahn.wamp.exception.ProtocolError: INTERRUPT received for non-pending invocation 2601

2019-03-02T16:34:36+0100 [Container   25923] dropping connection to peer tcp4:127.0.0.1:8080 with abort=True: I dropped the WebSocket TCP connection: WAMP Protocol Error (INTERRUPT received for non-pending invocation 2601)
2019-03-02T16:34:36+0100 [Container   25923] session closed with reason wamp.close.transport_lost [WAMP transport was lost without closing the session before]
2019-03-02T16:34:36+0100 [Container   25923] Lost connection to component 'component001' uncleanly
2019-03-02T16:34:36+0100 [Container   25923] Container is hosting no more components: continue running in exit mode <shutdown-manual>
2019-03-02T16:34:36+0100 [Container   25935] Traceback (most recent call last):
  File "/home/oberstet/scm/crossbario/autobahn-python/autobahn/wamp/websocket.py", line 95, in onMessage
    self._session.onMessage(msg)
  File "/home/oberstet/scm/crossbario/autobahn-python/autobahn/wamp/protocol.py", line 1027, in onMessage
    raise ProtocolError("INTERRUPT received for non-pending invocation {0}".format(msg.request))
autobahn.wamp.exception.ProtocolError: INTERRUPT received for non-pending invocation 2602

2019-03-02T16:34:36+0100 [Container   25935] dropping connection to peer tcp4:127.0.0.1:8080 with abort=True: I dropped the WebSocket TCP connection: WAMP Protocol Error (INTERRUPT received for non-pending invocation 2602)
2019-03-02T16:34:36+0100 [Container   25935] session closed with reason wamp.close.transport_lost [WAMP transport was lost without closing the session before]
2019-03-02T16:34:36+0100 [Container   25935] Lost connection to component 'component002' uncleanly
2019-03-02T16:34:36+0100 [Container   25935] Container is hosting no more components: continue running in exit mode <shutdown-manual>

Start with autobahn/wamp/protocol.py at line 1027 and autobahn/wamp/websocket.py at line 95, then investigate the hard-kill sequence over rawsocket that produces a late INTERRUPT. Reproduce the traceback and establish expected handling for an INTERRUPT received after the invocation is no longer pending.