New failure:

AMD64 FreeBSD CURRENT Shared 3.x:
https://buildbot.python.org/all/#/builders/168/builds/1154

...
test_thread_leak (test.test_threading.PyRLockTests) ... ok
test_timeout (test.test_threading.PyRLockTests) ... ok
test_try_acquire (test.test_threading.PyRLockTests) ... ok
test_try_acquire_contended (test.test_threading.PyRLockTests) ... ok
test_weakref_deleted (test.test_threading.PyRLockTests) ... ok
test_weakref_exists (test.test_threading.PyRLockTests) ... ok
test_with (test.test_threading.PyRLockTests) ... ok
test_acquire (test.test_threading.SemaphoreTests) ... ok
test_acquire_contended (test.test_threading.SemaphoreTests) ... ok
test_acquire_destroy (test.test_threading.SemaphoreTests) ... ok
test_acquire_timeout (test.test_threading.SemaphoreTests) ... ok
test_constructor (test.test_threading.SemaphoreTests) ... ok
test_default_value (test.test_threading.SemaphoreTests) ... ok
test_release_unacquired (test.test_threading.SemaphoreTests) ... ok
test_try_acquire (test.test_threading.SemaphoreTests) ... ok
test_try_acquire_contended (test.test_threading.SemaphoreTests) ... ok
test_with (test.test_threading.SemaphoreTests) ... ok
test_daemon_threads_fatal_error (test.test_threading.SubinterpThreadingTests) ... ok
test_threads_join (test.test_threading.SubinterpThreadingTests) ... ok
Fatal Python error: Py_EndInterpreter: not the last thread

Current thread 0x0000000800ac3000 (most recent call first):
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/support/__init__.py", line 2794 in run_in_subinterp
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/test_threading.py", line 923 in test_threads_join_2
test_threads_join_2 (test.test_threading.SubinterpThreadingTests) ... *** Signal 6

Stop.
make: stopped in /usr/home/buildbot/python/3.x.koobs-freebsd-current/build
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/case.py", line 628 in _callTestMethod
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/case.py", line 671 in run
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/case.py", line 731 in __call__
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/suite.py", line 122 in run
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/suite.py", line 84 in __call__
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/suite.py", line 122 in run
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/suite.py", line 84 in __call__
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/suite.py", line 122 in run
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/suite.py", line 84 in __call__
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/unittest/runner.py", line 176 in run
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/support/__init__.py", line 1984 in _run_suite
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/support/__init__.py", line 2080 in run_unittest
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/runtest.py", line 203 in _test_module
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/runtest.py", line 228 in _runtest_inner2
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/runtest.py", line 264 in _runtest_inner
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/runtest.py", line 148 in _runtest
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/runtest.py", line 187 in runtest
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/main.py", line 291 in rerun_failed_tests
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/main.py", line 646 in _main
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/main.py", line 588 in main
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/libregrtest/main.py", line 663 in main
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/test/__main__.py", line 2 in <module>
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/runpy.py", line 85 in _run_code
  File "/usr/home/buildbot/python/3.x.koobs-freebsd-current/build/Lib/runpy.py", line 192 in _run_module_as_main
program finished with exit code 1
elapsedTime=3523.834729