Actually use the stderr parameter instead of duping to stdout. (#467289)

execWithCapture takes an argument to specify stderr, but then we ignore
it. We just always dupe stderr to stdout. This changes it so that we do
what one would expect. If you want stderr duped to stdout, you pass in
stderr=1.

1 files changed, 1 insertions, 1 deletions

diff --git a/iutil.py b/iutil.py
index a21cebbdc..d221d9cac 100644
--- a/iutil.py
+++ b/iutil.py
@@ -66,7 +66,7 @@ def execWithCapture(command, argv, stdin = 0, stderr = 2, root='/'):
     try:
         pipe = subprocess.Popen([command] + argv, stdin=stdin,
                                 stdout=subprocess.PIPE,
-                                stderr=subprocess.STDOUT,
+                                stderr=stderr,
                                 preexec_fn=chroot, cwd=root)
     except OSError, (errno, msg):
         raise RuntimeError, "Error running " + command + ": " + msg