AutoRoll bot: check_call -> call

tools/safely-roll-deps.py

 #!/usr/bin/env python
 # Copyright 2014 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.
 
 """Generate a CL to roll a DEPS entry to the specified revision number and post
 it to Rietveld so that the CL will land automatically if it passes the
 commit-queue's checks.
 """
 
@@ skipping 70 matching lines @@
   os.chdir(root_dir)
 
   project = args[0]
   new_rev = int(args[1])
 
   # Silence the editor.
   os.environ['EDITOR'] = 'true'
 
   if options.force and not options.dry_run:
     subprocess2.check_call(['git', 'clean', '-d', '-f'])
-    subprocess2.check_call(['git', 'rebase', '--abort'])
+    subprocess2.call(['git', 'rebase', '--abort'])
 
   old_branch = scm.GIT.GetBranch(root_dir)
   new_branch = '%s_roll' % project
 
   if options.upstream == new_branch:
     parser.error('Cannot set %s as its own upstream.' % new_branch)
 
   if old_branch == new_branch:
     if options.force:
       if not options.dry_run:
@@ skipping 37 matching lines @@
     subprocess2.check_call(upload_cmd)
   finally:
     if not options.dry_run:
       subprocess2.check_output(['git', 'checkout', old_branch])
       subprocess2.check_output(['git', 'branch', '-D', new_branch])
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())