diff -r 1cfca1b4f518 -r c912eaf29eec hgext3rd/topic/compat.py
--- a/hgext3rd/topic/compat.py	Thu Mar 22 09:53:42 2018 +0100
+++ b/hgext3rd/topic/compat.py	Fri Mar 23 09:08:21 2018 -0700
@@ -31,14 +31,16 @@
 
 # Wrap obsolete.creatmarkers and make it accept but ignore "operation" argument
 # for hg < 4.3
-createmarkers = obsolete.createmarkers
-originalcreatemarkers = createmarkers
+originalcreatemarkers = obsolete.createmarkers
 while isinstance(originalcreatemarkers, functools.partial):
     originalcreatemarkers = originalcreatemarkers.func
 if originalcreatemarkers.__code__.co_argcount < 6:
     def createmarkers(repo, relations, flag=0, date=None, metadata=None,
                       operation=None):
         return obsolete.createmarkers(repo, relations, flag, date, metadata)
+else:
+    def createmarkers(*args, **kwargs):
+        return obsolete.createmarkers(*args, **kwargs)
 
 def startpager(ui, cmd):
     """function to start a pager in case ui.pager() exists"""