--- a/tests/simplestorerepo.py	Sat Sep 07 00:26:15 2019 +0200
+++ b/tests/simplestorerepo.py	Sat Sep 07 00:34:20 2019 +0200
@@ -91,7 +91,7 @@
     node = attr.ib(default=None)
 
 @interfaceutil.implementer(repository.ifilestorage)
-class filestorage(flagutil.flagprocessorsmixin):
+class filestorage(object):
     """Implements storage for a tracked path.
 
     Data is stored in the VFS in a directory corresponding to the tracked