--- a/mercurial/bundlerepo.py	Tue Sep 11 13:46:59 2018 -0700
+++ b/mercurial/bundlerepo.py	Tue Sep 11 17:11:32 2018 -0700
@@ -449,7 +449,7 @@
             self.ui.warn(msg % nodemod.hex(p2))
         return super(bundlerepository, self).setparents(p1, p2)
 
-def instance(ui, path, create, intents=None):
+def instance(ui, path, create, intents=None, createopts=None):
     if create:
         raise error.Abort(_('cannot create new bundle repository'))
     # internal config: bundle.mainreporoot