Issue 12071: test_concurrent_futures.test_context_manager_shutdown() hangs on OpenIndiana (original) (raw)

test_concurrent_futures of Python 3.3 (rev [6d8678555c04]) hangs on OpenIndiana. I dumped manually the tracebacks of the parent process (test_concurrent_futures) and of the 3 child processes. In the parent process, the test hangs when exiting the context manager:

def test_context_manager_shutdown(self):
    with futures.ProcessPoolExecutor(max_workers=5) as e:
        processes = e._processes
        self.assertEqual(list(e.map(abs, range(-5, 5))),
                         [5, 4, 3, 2, 1, 0, 1, 2, 3, 4])
        ####### HERE #########
    for p in processes:
        p.join()

I may be related to issue #9205.

Have fun with the following tracebacks!

[123/354] test_concurrent_futures

=== Parent ===

Thread 0x000004af: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x000004ae: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x000004a0: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000049f: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000049e: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000049d: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000479: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000478: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000477: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000476: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000475: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000474: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000473: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000472: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000471: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000470: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000046f: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000046e: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000046d: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000046c: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000044d: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000044c: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000044b: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x0000044a: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000449: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000448: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000447: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000446: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000445: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 252 in _feed File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Thread 0x00000444: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 378 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 208 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Current thread 0x00000001: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/threading.py", line 851 in join File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 352 in shutdown self._queue_management_thread.join() File "/home/haypo/cpython/Lib/concurrent/futures/_base.py", line 570 in exit File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 164 in test_context_manager_shutdown File "/home/haypo/cpython/Lib/unittest/case.py", line 407 in _executeTestPart File "/home/haypo/cpython/Lib/unittest/case.py", line 462 in run File "/home/haypo/cpython/Lib/unittest/case.py", line 514 in call File "/home/haypo/cpython/Lib/unittest/suite.py", line 105 in run File "/home/haypo/cpython/Lib/unittest/suite.py", line 67 in call File "/home/haypo/cpython/Lib/unittest/suite.py", line 105 in run File "/home/haypo/cpython/Lib/unittest/suite.py", line 67 in call File "/home/haypo/cpython/Lib/test/support.py", line 1099 in run File "/home/haypo/cpython/Lib/test/support.py", line 1187 in _run_suite File "/home/haypo/cpython/Lib/test/support.py", line 1213 in run_unittest File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 618 in test_main File "/home/haypo/cpython/Lib/test/regrtest.py", line 1044 in runtest_inner File "/home/haypo/cpython/Lib/test/regrtest.py", line 838 in runtest File "/home/haypo/cpython/Lib/test/regrtest.py", line 662 in main File "/home/haypo/cpython/Lib/test/regrtest.py", line 1625 in File "/home/haypo/cpython/Lib/runpy.py", line 73 in _run_code File "/home/haypo/cpython/Lib/runpy.py", line 160 in _run_module_as_main

=== Child #1 =========

Thread 0x00000445:

Thread 0x00000444: File "/home/haypo/cpython/Lib/threading.py", line 237 in wait waiter.acquire() File "/home/haypo/cpython/Lib/threading.py", line 423 in wait File "/home/haypo/cpython/Lib/threading.py", line 685 in start File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 187 in _start_thread File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 107 in put File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 168 in _add_call_item_to_queue File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 206 in _queue_management_worker File "/home/haypo/cpython/Lib/threading.py", line 690 in run File "/home/haypo/cpython/Lib/threading.py", line 737 in _bootstrap_inner File "/home/haypo/cpython/Lib/threading.py", line 710 in _bootstrap

Current thread 0x00000001: File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 115 in get self._rlock.acquire() File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 122 in _process_worker File "/home/haypo/cpython/Lib/multiprocessing/process.py", line 118 in run File "/home/haypo/cpython/Lib/multiprocessing/process.py", line 263 in _bootstrap File "/home/haypo/cpython/Lib/multiprocessing/forking.py", line 126 in init File "/home/haypo/cpython/Lib/multiprocessing/process.py", line 134 in start File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 323 in _adjust_process_count File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 341 in submit File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 77 in File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 77 in _prime_executor File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 64 in setUp File "/home/haypo/cpython/Lib/unittest/case.py", line 407 in _executeTestPart File "/home/haypo/cpython/Lib/unittest/case.py", line 460 in run File "/home/haypo/cpython/Lib/unittest/case.py", line 514 in call File "/home/haypo/cpython/Lib/unittest/suite.py", line 105 in run File "/home/haypo/cpython/Lib/unittest/suite.py", line 67 in call File "/home/haypo/cpython/Lib/unittest/suite.py", line 105 in run File "/home/haypo/cpython/Lib/unittest/suite.py", line 67 in call File "/home/haypo/cpython/Lib/test/support.py", line 1099 in run File "/home/haypo/cpython/Lib/test/support.py", line 1187 in _run_suite File "/home/haypo/cpython/Lib/test/support.py", line 1213 in run_unittest File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 618 in test_main File "/home/haypo/cpython/Lib/test/regrtest.py", line 1044 in runtest_inner File "/home/haypo/cpython/Lib/test/regrtest.py", line 838 in runtest File "/home/haypo/cpython/Lib/test/regrtest.py", line 662 in main File "/home/haypo/cpython/Lib/test/regrtest.py", line 1625 in File "/home/haypo/cpython/Lib/runpy.py", line 73 in _run_code File "/home/haypo/cpython/Lib/runpy.py", line 160 in _run_module_as_main

=== Child #2 =========

Current thread 0x00000001: File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 364 in _recv chunk = read(self._handle, remaining) File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 385 in _recv_bytes File "/home/haypo/cpython/Lib/multiprocessing/connection.py", line 260 in recv File "/home/haypo/cpython/Lib/multiprocessing/queues.py", line 117 in get File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 122 in _process_worker File "/home/haypo/cpython/Lib/multiprocessing/process.py", line 118 in run File "/home/haypo/cpython/Lib/multiprocessing/process.py", line 263 in _bootstrap File "/home/haypo/cpython/Lib/multiprocessing/forking.py", line 126 in init File "/home/haypo/cpython/Lib/multiprocessing/process.py", line 134 in start File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 323 in _adjust_process_count File "/home/haypo/cpython/Lib/concurrent/futures/process.py", line 341 in submit File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 77 in File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 77 in _prime_executor File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 64 in setUp File "/home/haypo/cpython/Lib/unittest/case.py", line 407 in _executeTestPart File "/home/haypo/cpython/Lib/unittest/case.py", line 460 in run File "/home/haypo/cpython/Lib/unittest/case.py", line 514 in call File "/home/haypo/cpython/Lib/unittest/suite.py", line 105 in run File "/home/haypo/cpython/Lib/unittest/suite.py", line 67 in call File "/home/haypo/cpython/Lib/unittest/suite.py", line 105 in run File "/home/haypo/cpython/Lib/unittest/suite.py", line 67 in call File "/home/haypo/cpython/Lib/test/support.py", line 1099 in run File "/home/haypo/cpython/Lib/test/support.py", line 1187 in _run_suite File "/home/haypo/cpython/Lib/test/support.py", line 1213 in run_unittest File "/home/haypo/cpython/Lib/test/test_concurrent_futures.py", line 618 in test_main File "/home/haypo/cpython/Lib/test/regrtest.py", line 1044 in runtest_inner File "/home/haypo/cpython/Lib/test/regrtest.py", line 838 in runtest File "/home/haypo/cpython/Lib/test/regrtest.py", line 662 in main File "/home/haypo/cpython/Lib/test/regrtest.py", line 1625 in File "/home/haypo/cpython/Lib/runpy.py", line 73 in _run_code File "/home/haypo/cpython/Lib/runpy.py", line 160 in _run_module_as_main

=== Child #3 =========