Some callers expect e.stderr to be filled on exception

scm.py

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """SCM-specific utility classes."""
 
 import cStringIO
 import glob
 import logging
 import os
@@ skipping 71 matching lines @@
           cwd=root)
       return 'git'
     except (OSError, subprocess2.CalledProcessError):
       return None
 
 
 class GIT(object):
   @staticmethod
   def Capture(args, **kwargs):
     return subprocess2.check_output(
-        ['git'] + args, stderr=subprocess2.VOID, **kwargs)
+        ['git'] + args, stderr=subprocess2.PIPE, **kwargs)
 
   @staticmethod
   def CaptureStatus(files, upstream_branch=None):
     """Returns git status.
 
     @files can be a string (one file) or a list of files.
 
     Returns an array of (status, file) tuples."""
     if upstream_branch is None:
       upstream_branch = GIT.GetUpstreamBranch(os.getcwd())
@@ skipping 879 matching lines @@
       if (file_status[0][0] in ('D', 'A', '!') or
           not file_status[0][1:].isspace()):
         # Added, deleted file requires manual intervention and require calling
         # revert, like for properties.
         try:
           SVN.Capture(['revert', file_status[1]], cwd=repo_root)
         except subprocess2.CalledProcessError:
           if not os.path.exists(file_path):
             continue
           raise