diff -r 5974123d0339 -r ef3668450cd0 mercurial/util.py
--- a/mercurial/util.py	Mon Mar 29 16:11:40 2010 -0500
+++ b/mercurial/util.py	Tue Mar 30 13:09:25 2010 -0500
@@ -1260,7 +1260,7 @@
             pass
     try:
         import termios, array, fcntl
-        for dev in (sys.stdout, sys.stdin):
+        for dev in (sys.stderr, sys.stdout, sys.stdin):
             try:
                 try:
                     fd = dev.fileno()