diff -r ed5d2a7c4b73 -r 6a64813276ed mercurial/localrepo.py
--- a/mercurial/localrepo.py	Fri May 14 12:57:24 2010 -0500
+++ b/mercurial/localrepo.py	Sat May 15 17:48:49 2010 -0500
@@ -647,6 +647,7 @@
                 self.destroyed()
             else:
                 self.ui.warn(_("no rollback information available\n"))
+                return 1
         finally:
             release(lock, wlock)