diff -r 90cc552ceed5 -r a81c76106d90 mercurial/exchange.py
--- a/mercurial/exchange.py	Thu Nov 20 16:39:32 2014 -0800
+++ b/mercurial/exchange.py	Sat Nov 22 17:09:04 2014 -0600
@@ -681,51 +681,15 @@
 
         # filter heads already turned public by the push
         outdated = [c for c in outdated if c.node() not in pheads]
-        b2caps = bundle2.bundle2caps(pushop.remote)
-        if 'b2x:pushkey' in b2caps:
-            # server supports bundle2, let's do a batched push through it
-            #
-            # This will eventually be unified with the changesets bundle2 push
-            bundler = bundle2.bundle20(pushop.ui, b2caps)
-            capsblob = bundle2.encodecaps(bundle2.getrepocaps(pushop.repo))
-            bundler.newpart('b2x:replycaps', data=capsblob)
-            part2node = []
-            enc = pushkey.encode
-            for newremotehead in outdated:
-                part = bundler.newpart('b2x:pushkey')
-                part.addparam('namespace', enc('phases'))
-                part.addparam('key', enc(newremotehead.hex()))
-                part.addparam('old', enc(str(phases.draft)))
-                part.addparam('new', enc(str(phases.public)))
-                part2node.append((part.id, newremotehead))
-            stream = util.chunkbuffer(bundler.getchunks())
-            try:
-                reply = pushop.remote.unbundle(stream, ['force'], 'push')
-                op = bundle2.processbundle(pushop.repo, reply)
-            except error.BundleValueError, exc:
-                raise util.Abort('missing support for %s' % exc)
-            for partid, node in part2node:
-                partrep = op.records.getreplies(partid)
-                results = partrep['pushkey']
-                assert len(results) <= 1
-                msg = None
-                if not results:
-                    msg = _('server ignored update of %s to public!\n') % node
-                elif not int(results[0]['return']):
-                    msg = _('updating %s to public failed!\n') % node
-                if msg is not None:
-                    pushop.ui.warn(msg)
-
-        else:
-            # fallback to independent pushkey command
-            for newremotehead in outdated:
-                r = pushop.remote.pushkey('phases',
-                                          newremotehead.hex(),
-                                          str(phases.draft),
-                                          str(phases.public))
-                if not r:
-                    pushop.ui.warn(_('updating %s to public failed!\n')
-                                   % newremotehead)
+        # fallback to independent pushkey command
+        for newremotehead in outdated:
+            r = pushop.remote.pushkey('phases',
+                                      newremotehead.hex(),
+                                      str(phases.draft),
+                                      str(phases.public))
+            if not r:
+                pushop.ui.warn(_('updating %s to public failed!\n')
+                               % newremotehead)
 
 def _localphasemove(pushop, nodes, phase=phases.public):
     """move <nodes> to <phase> in the local source repo"""