test_multiprocessing_spawn fails on x86 Windows7 3.7 buildbot:

https://buildbot.python.org/all/#/builders/111/builds/500

Timeout (0:15:00)!
Thread 0x00000c64 (most recent call first):
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\connection.py", line 306 in _recv_bytes
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\connection.py", line 250 in recv
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 470 in _handle_results
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 865 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 917 in _bootstrap_inner
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 885 in _bootstrap
Thread 0x000000b4 (most recent call first):
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 422 in _handle_tasks
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 865 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 917 in _bootstrap_inner
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 885 in _bootstrap
Thread 0x000008d4 (most recent call first):
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 413 in _handle_workers
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 865 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 917 in _bootstrap_inner
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 885 in _bootstrap
Thread 0x00000b88 (most recent call first):
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 296 in wait
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\threading.py", line 552 in wait
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 648 in wait
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 651 in get
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 261 in apply
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\_test_multiprocessing.py", line 2224 in test_apply
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\case.py", line 615 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\case.py", line 663 in __call__
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\suite.py", line 122 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\suite.py", line 84 in __call__
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\suite.py", line 122 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\suite.py", line 84 in __call__
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\suite.py", line 122 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\suite.py", line 84 in __call__
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\unittest\runner.py", line 176 in run
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\support\__init__.py", line 1882 in _run_suite
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\support\__init__.py", line 1972 in run_unittest
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\libregrtest\runtest.py", line 175 in test_runner
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\libregrtest\runtest.py", line 179 in runtest_inner
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\libregrtest\runtest.py", line 140 in runtest
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\libregrtest\main.py", line 286 in rerun_failed_tests
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\libregrtest\main.py", line 570 in _main
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\libregrtest\main.py", line 531 in main
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\libregrtest\main.py", line 584 in main
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\test\__main__.py", line 2 in <module>
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\runpy.py", line 85 in _run_code
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\runpy.py", line 193 in _run_module_as_main
Process SpawnPoolWorker-184:
Traceback (most recent call last):
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 127, in worker
    put((job, i, result))
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\queues.py", line 361, in put
    self._writer.send_bytes(obj)
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\connection.py", line 200, in send_bytes
    self._send_bytes(m[offset:offset + size])
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\connection.py", line 280, in _send_bytes
    ov, err = _winapi.WriteFile(self._handle, buf, overlapped=True)
BrokenPipeError: [WinError 232] The pipe is being closed
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\process.py", line 297, in _bootstrap
    self.run()
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\process.py", line 99, in run
    self._target(*self._args, **self._kwargs)
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\pool.py", line 132, in worker
    put((job, i, (False, wrapped)))
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\queues.py", line 361, in put
    self._writer.send_bytes(obj)
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\connection.py", line 200, in send_bytes
    self._send_bytes(m[offset:offset + size])
  File "D:\cygwin\home\db3l\buildarea\3.7.bolen-windows7\build\lib\multiprocessing\connection.py", line 280, in _send_bytes
    ov, err = _winapi.WriteFile(self._handle, buf, overlapped=True)
BrokenPipeError: [WinError 232] The pipe is being closed
program finished with exit code 1
elapsedTime=4600.317000