ChunkBuilder: runcmd, redirect err to out

Data buffers can get confused if two file handles are writing to the
same file, python's subprocess module has subprocess.STDOUT for this.

1 files changed, 2 insertions, 1 deletions

diff --git a/morphlib/builder2.py b/morphlib/builder2.py
index b9679d99..41583149 100644
--- a/morphlib/builder2.py
+++ b/morphlib/builder2.py
@@ -22,6 +22,7 @@ import time
 from collections import defaultdict
 import tarfile
 import traceback
+import subprocess
 
 import cliapp
 
@@ -376,7 +377,7 @@ class ChunkBuilder(BuilderBase):
                         self.runcmd(['sh', '-c', cmd],
                                     cwd=relative_builddir,
                                     stdout=logfile,
-                                    stderr=logfile)
+                                    stderr=subprocess.STDOUT)
                         logfile.flush()
                     except cliapp.AppException, e:
                         logfile.flush()