Fix kicking guest users in worker mode

When guest_access changes from allowed to forbidden all local guest
users should be kicked from the room. This did not happen when
revocation was received from federation on a worker.

Presumably broken in #4141

synapse/app/federation_reader.py

@@ -40,6 +40,7 @@ from synapse.replication.slave.storage.profile import SlavedProfileStore
 from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore
 from synapse.replication.slave.storage.pushers import SlavedPusherStore
 from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
+from synapse.replication.slave.storage.registration import SlavedRegistrationStore
 from synapse.replication.slave.storage.room import RoomStore
 from synapse.replication.slave.storage.transactions import SlavedTransactionStore
 from synapse.replication.tcp.client import ReplicationClientHandler
@@ -62,6 +63,7 @@ class FederationReaderSlavedStore(
     SlavedReceiptsStore,
     SlavedEventStore,
     SlavedKeyStore,
+    SlavedRegistrationStore,
     RoomStore,
     DirectoryStore,
     SlavedTransactionStore,

synapse/handlers/_base.py

@@ -167,4 +167,4 @@ class BaseHandler(object):
                     ratelimit=False,
                 )
             except Exception as e:
-                logger.warn("Error kicking guest user: %s" % (e,))
+                logger.exception("Error kicking guest user: %s" % (e,))