Disable jobs sent directly to triggered bots

trychange.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 818 matching lines @@
           assert ',' not in bot
           if bot.endswith(':compile'):
             # Skip over compile-only builders for now.
             continue
           bots.add(bot.split(':', 1)[0])
         options.bot = list(bots)
 
       # If no bot is specified, either the default pool will be selected or the
       # try server will refuse the job. Either case we don't need to interfere.
 
+    if any('triggered' in b.split(':', 1)[0] for b in options.bot):
+      print >> sys.stderr, (
+          'ERROR You are trying to send a job to a triggered bot.  This type of'
+          ' bot requires an\ninitial job from a parent (usually a builder).  '
+          'Instead send your job to the parent.\nBot list: %s' % options.bot)
+      return 1
+
     if options.print_bots:
       print 'Bots which would be used:'
       for bot in options.bot:
         print '  %s' % bot
       return 0
 
     # Send the patch.
     if options.send_patch:
       # If forced.
       options.send_patch(options)
@@ skipping 17 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, None, False))