mercurial/bundlerepo.py

--- a/mercurial/bundlerepo.py	Sat Mar 11 20:58:26 2017 -0500
+++ b/mercurial/bundlerepo.py	Sun Mar 12 03:32:21 2017 -0400
@@ -209,7 +209,7 @@
             node = self.node(node)
 
         if node in self.fulltextcache:
-            result = self.fulltextcache[node].tostring()
+            result = '%s' % self.fulltextcache[node]
         else:
             result = manifest.manifestrevlog.revision(self, nodeorrev)
         return result