--- a/mercurial/httppeer.py	Tue Sep 11 13:46:59 2018 -0700
+++ b/mercurial/httppeer.py	Tue Sep 11 17:11:32 2018 -0700
@@ -982,7 +982,7 @@
     return httppeer(ui, path, respurl, opener, requestbuilder,
                     info['v1capabilities'])
 
-def instance(ui, path, create, intents=None):
+def instance(ui, path, create, intents=None, createopts=None):
     if create:
         raise error.Abort(_('cannot create new http repository'))
     try: