The backtrace:

Thread 0:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib        	0x00007fff8a54e386 __semwait_signal + 10
1   libsystem_c.dylib             	0x00007fff85e30800 nanosleep + 163
2   libsystem_c.dylib             	0x00007fff85e30717 usleep + 54
3   testcrash_python_threadlocal.so	0x00000001002ddd40 test_dealloc + 48
4   python.exe                    	0x00000001000400a9 dict_dealloc + 153 (dictobject.c:1010)
5   python.exe                    	0x00000001000432d3 PyDict_DelItem + 259 (dictobject.c:855)
6   python.exe                    	0x00000001000d7f27 _localdummy_destroyed + 71 (threadmodule.c:585)
7   python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
8   python.exe                    	0x0000000100006e42 PyObject_CallFunctionObjArgs + 370 (abstract.c:2761)
9   python.exe                    	0x000000010006b2e6 PyObject_ClearWeakRefs + 534 (weakrefobject.c:892)
10  python.exe                    	0x00000001000d746b localdummy_dealloc + 27 (threadmodule.c:231)
11  python.exe                    	0x00000001000400a9 dict_dealloc + 153 (dictobject.c:1010)
12  python.exe                    	0x00000001000c003b PyThreadState_Clear + 139 (pystate.c:240)
13  python.exe                    	0x00000001000c02c8 PyInterpreterState_Clear + 56 (pystate.c:104)
14  python.exe                    	0x00000001000c1c68 Py_Finalize + 344 (pythonrun.c:504)
15  python.exe                    	0x00000001000d5891 Py_Main + 3041 (main.c:665)
16  python.exe                    	0x0000000100000a74 start + 52

Thread 1:
0   libsystem_kernel.dylib        	0x00007fff8a54e386 __semwait_signal + 10
1   libsystem_c.dylib             	0x00007fff85e30800 nanosleep + 163
2   libsystem_c.dylib             	0x00007fff85e30717 usleep + 54
3   testcrash_python_threadlocal.so	0x00000001002ddd40 test_dealloc + 48
4   python.exe                    	0x00000001000400a9 dict_dealloc + 153 (dictobject.c:1010)
5   python.exe                    	0x00000001000432d3 PyDict_DelItem + 259 (dictobject.c:855)
6   python.exe                    	0x00000001000d7f27 _localdummy_destroyed + 71 (threadmodule.c:585)
7   python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
8   python.exe                    	0x0000000100006e42 PyObject_CallFunctionObjArgs + 370 (abstract.c:2761)
9   python.exe                    	0x000000010006b2e6 PyObject_ClearWeakRefs + 534 (weakrefobject.c:892)
10  python.exe                    	0x00000001000d746b localdummy_dealloc + 27 (threadmodule.c:231)
11  python.exe                    	0x00000001000400a9 dict_dealloc + 153 (dictobject.c:1010)
12  python.exe                    	0x00000001000c003b PyThreadState_Clear + 139 (pystate.c:240)
13  python.exe                    	0x00000001000d7ec4 t_bootstrap + 372 (threadmodule.c:643)
14  libsystem_c.dylib             	0x00007fff85da6742 _pthread_start + 327
15  libsystem_c.dylib             	0x00007fff85d93181 thread_start + 13

Thread 2:
0   libsystem_kernel.dylib        	0x00007fff8a54e322 __select + 10
1   time.so                       	0x00000001002fb01b time_sleep + 139 (timemodule.c:948)
2   python.exe                    	0x000000010009fcfb PyEval_EvalFrameEx + 18011 (ceval.c:4021)
3   python.exe                    	0x00000001000a30f3 fast_function + 179 (ceval.c:4107)
4   python.exe                    	0x000000010009fdad PyEval_EvalFrameEx + 18189 (ceval.c:4042)
5   python.exe                    	0x00000001000a2fb7 PyEval_EvalCodeEx + 2103 (ceval.c:3253)
6   python.exe                    	0x000000010002f8cb function_call + 347 (funcobject.c:526)
7   python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
8   python.exe                    	0x00000001000a066a PyEval_EvalFrameEx + 20426 (ceval.c:4334)
9   python.exe                    	0x00000001000a30f3 fast_function + 179 (ceval.c:4107)
10  python.exe                    	0x000000010009fdad PyEval_EvalFrameEx + 18189 (ceval.c:4042)
11  python.exe                    	0x00000001000a30f3 fast_function + 179 (ceval.c:4107)
12  python.exe                    	0x000000010009fdad PyEval_EvalFrameEx + 18189 (ceval.c:4042)
13  python.exe                    	0x00000001000a2fb7 PyEval_EvalCodeEx + 2103 (ceval.c:3253)
14  python.exe                    	0x000000010002f8cb function_call + 347 (funcobject.c:526)
15  python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
16  python.exe                    	0x0000000100018b07 instancemethod_call + 439 (classobject.c:2603)
17  python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
18  python.exe                    	0x000000010009aaa4 PyEval_CallObjectWithKeywords + 180 (ceval.c:3891)
19  python.exe                    	0x00000001000d7d96 t_bootstrap + 70 (threadmodule.c:614)
20  libsystem_c.dylib             	0x00007fff85da6742 _pthread_start + 327
21  libsystem_c.dylib             	0x00007fff85d93181 thread_start + 13

Thread 3 Crashed:
0   python.exe                    	0x00000001000a2329 PyEval_EvalFrameEx + 27785 (ceval.c:2995)
1   python.exe                    	0x00000001000a2fb7 PyEval_EvalCodeEx + 2103 (ceval.c:3253)
2   python.exe                    	0x000000010002f8cb function_call + 347 (funcobject.c:526)
3   python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
4   python.exe                    	0x00000001000a066a PyEval_EvalFrameEx + 20426 (ceval.c:4334)
5   python.exe                    	0x00000001000a30f3 fast_function + 179 (ceval.c:4107)
6   python.exe                    	0x000000010009fdad PyEval_EvalFrameEx + 18189 (ceval.c:4042)
7   python.exe                    	0x00000001000a30f3 fast_function + 179 (ceval.c:4107)
8   python.exe                    	0x000000010009fdad PyEval_EvalFrameEx + 18189 (ceval.c:4042)
9   python.exe                    	0x00000001000a2fb7 PyEval_EvalCodeEx + 2103 (ceval.c:3253)
10  python.exe                    	0x000000010002f8cb function_call + 347 (funcobject.c:526)
11  python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
12  python.exe                    	0x0000000100018b07 instancemethod_call + 439 (classobject.c:2603)
13  python.exe                    	0x0000000100006c61 PyObject_Call + 97 (abstract.c:2529)
14  python.exe                    	0x000000010009aaa4 PyEval_CallObjectWithKeywords + 180 (ceval.c:3891)
15  python.exe                    	0x00000001000d7d96 t_bootstrap + 70 (threadmodule.c:614)
16  libsystem_c.dylib             	0x00007fff85da6742 _pthread_start + 327
17  libsystem_c.dylib             	0x00007fff85d93181 thread_start + 13