Fix check_output usage in trychange.py

trychange.py

 #!/usr/bin/env python
 # 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.
 
 """Client-side script to send a try job to the try server. It communicates to
 the try server by either writting to a svn repository or by directly connecting
 to the server by HTTP.
 """
 
@@ skipping 383 matching lines @@
         # Windows' svn.exe has no clue about cygwin paths. Hence force to use
         # the cygwin version in this particular context.
         exe = "/usr/bin/svn"
       else:
         exe = "svn"
       command = [exe, 'import', '-q', temp_dir, options.svn_repo, '--file',
                  temp_file.name]
       if scm.SVN.AssertVersion("1.5")[0]:
         command.append('--no-ignore')
 
-      subprocess2.check_output(command, stdout=subprocess2.VOID)
+      subprocess2.check_output(
+          command, stdout=subprocess2.PIPE, stderr=subprocess2.STDOUT)
     except subprocess2.CalledProcessError, e:
-      out = e.stdout
-      if e.stderr:
-        out += e.stderr
-      raise NoTryServerAccess(' '.join(e.command) + '\nOuput:\n' + out)
+      raise NoTryServerAccess(' '.join(e.cmd) + '\nOuput:\n' + e.stdout)
   finally:
     temp_file.close()
     shutil.rmtree(temp_dir, True)
 
 
 def PrintSuccess(options):
   if not options.dry_run:
     text = 'Patch \'%s\' sent to try server' % options.name
     if options.bot:
       text += ': %s' % ', '.join(options.bot)
@@ skipping 344 matching lines @@
     return 1
   except (gclient_utils.Error, subprocess2.CalledProcessError), e:
     print >> sys.stderr, e
     return 1
   return 0
 
 
 if __name__ == "__main__":
   fix_encoding.fix_encoding()
   sys.exit(TryChange(None, [], False))