Fixes and add smoke test: hard timeout on isolated task.

appengine/swarming/swarming_bot/__main__.py

 # Copyright 2014 The Swarming Authors. All rights reserved.
 # Use of this source code is governed by the Apache v2.0 license that can be
 # found in the LICENSE file.
 
 """Runs either task_runner.py, bot_main.py or bot_config.py.
 
 The imports are done late so if an ImportError occurs, it is localized to this
 command only.
 """
 
@@ skipping 42 matching lines @@
 def CMDtask_runner(args):
   """Internal command to run a swarming task."""
   logging_utils.prepare_logging(os.path.join('logs', 'task_runner.log'))
   from bot_code import task_runner
   return task_runner.main(args)
 
 
 def CMDstart_bot(args):
   """Starts the swarming bot."""
   logging_utils.prepare_logging(os.path.join('logs', 'swarming_bot.log'))
-  logging_utils.set_console_level(logging.DEBUG)
   logging.info(
       'importing bot_main: %s, %s', THIS_FILE, zip_package.generate_version())
   from bot_code import bot_main
   result = bot_main.main(args)
   logging.info('bot_main exit code: %d', result)
   return result
 
 
 def CMDstart_slave(args):
   """Ill named command that actually sets up the bot then start it."""
   # TODO(maruel): Rename function.
   logging_utils.prepare_logging(os.path.join('logs', 'bot_config.log'))
-  logging_utils.set_console_level(logging.DEBUG)
 
   parser = optparse.OptionParser()
   parser.add_option(
       '--survive', action='store_true',
       help='Do not reboot the host even if bot_config.setup_bot() asked to')
   options, args = parser.parse_args(args)
 
   try:
     from bot_code import bot_main
     bot_main.setup_bot(options.survive)
@@ skipping 70 matching lines @@
       with zipfile.ZipFile(THIS_FILE, 'r') as f:
         logging.error('Files in %s:\n%s', THIS_FILE, f.namelist())
       return 1
 
   print >> sys.stderr, 'Unknown command %s' % cmd
   return 1
 
 
 if __name__ == '__main__':
   sys.exit(main())