diff -r 40f9472f5737 -r cbf5f3eb9d13 mercurial/changelog.py
--- a/mercurial/changelog.py	Fri Feb 08 17:14:12 2013 -0600
+++ b/mercurial/changelog.py	Sat Feb 09 06:07:32 2013 -0600
@@ -183,7 +183,7 @@
         """filtered version of revlog.rev"""
         r = super(changelog, self).rev(node)
         if r in self.filteredrevs:
-            raise error.LookupError(node, self.indexfile, _('no node'))
+            raise error.LookupError(hex(node), self.indexfile, _('no node'))
         return r
 
     def node(self, rev):