SIGTERM signal receivedTraceback(most recent call last):
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py", line 492, in <module>
    sys.exit(main(sys.argv[1:], sys.stdout, sys.stderr))
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py", line 91, in main
    run_details = run(port, options, args, stderr)
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/layout_tests/run_webkit_tests.py", line 485, in run
    run_details = manager.run(args)
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/layout_tests/controllers/manager.py", line 276, in run
    temp_initial_results, temp_retry_results, temp_enabled_pixel_tests_in_retry = self._run_test_subset(tests_to_run_by_device[device_type], tests_to_skip, device_type=device_type)
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/layout_tests/controllers/manager.py", line 340, in _run_test_subset
    initial_results = self._run_tests(tests_to_run, tests_to_skip, self._options.repeat_each, self._options.iterations, int(self._options.child_processes), retrying=False, device_type=device_type)
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/layout_tests/controllers/manager.py", line 401, in _run_tests
    return self._runner.run_tests(self._expectations[device_type], test_inputs, tests_to_skip, num_workers, retrying)
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/layout_tests/controllers/layout_test_runner.py", line 127, in run_tests
    pool.run(('test_list', shard.name, shard.test_inputs) for shard in all_shards)
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/common/message_pool.py", line 104, in run
    self.wait()
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/common/message_pool.py", line 134, in wait
    self._start_workers()
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/common/message_pool.py", line 116, in _start_workers
    worker.start()
  File "/home/igalia/clopez/webkit/webkit/Tools/Scripts/webkitpy/common/message_pool.py", line 262, in start
    super(_Worker, self).start()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 130, in start
    self._popen = Popen(self)
  File "/usr/lib/python2.7/multiprocessing/forking.py", line 126, in __init__
    code = process_obj._bootstrap()
  File "/usr/lib/python2.7/multiprocessing/process.py", line 270, in _bootstrap
    util._exit_function()
  File "/usr/lib/python2.7/multiprocessing/util.py", line 331, in _exit_function
    _run_finalizers()
  File "/usr/lib/python2.7/multiprocessing/util.py", line 277, in _run_finalizers
    finalizer()
  File "/usr/lib/python2.7/multiprocessing/util.py", line 207, in __call__
    res = self._callback(*self._args, **self._kwargs)
  File "/usr/lib/python2.7/multiprocessing/queues.py", line 218, in _finalize_join
    thread.join()
  File "/usr/lib/python2.7/threading.py", line 940, in join
    self.__block.wait()
  File "/usr/lib/python2.7/threading.py", line 340, in wait
    waiter.acquire()