Steve Stagg <stest...@gmail.com> added the comment:

I was able to reproduce, follows is the raw LLDB output, I don't think this 
fails on master, will try some bisecting:

* thread #1, name = 'runtest', stop reason = signal SIGSEGV: invalid address 
(fault address: 0x0)
    frame #0: 0x00007ffff7079ae7 
_asyncio.cpython-38d-x86_64-linux-gnu.so`PyInit__asyncio [inlined] 
_Py_INCREF(op=0x0000000000000000) at object.h:459:18
   456  static inline void _Py_INCREF(PyObject *op)
   457  {
   458      _Py_INC_REFTOTAL;
-> 459      op->ob_refcnt++;
   460  }
   461  
   462  #define Py_INCREF(op) _Py_INCREF(_PyObject_CAST(op))
(lldb) bt
* thread #1, name = 'runtest', stop reason = signal SIGSEGV: invalid address 
(fault address: 0x0)
  * frame #0: 0x00007ffff7079ae7 
_asyncio.cpython-38d-x86_64-linux-gnu.so`PyInit__asyncio [inlined] 
_Py_INCREF(op=0x0000000000000000) at object.h:459:18
    frame #1: 0x00007ffff7079ad6 
_asyncio.cpython-38d-x86_64-linux-gnu.so`PyInit__asyncio at 
_asynciomodule.c:3405
    frame #2: 0x0000555555720766 
runtest`_PyImport_LoadDynamicModuleWithSpec(spec=0x00007ffff6e33780, 
fp=<unavailable>) at importdl.c:164:9
    frame #3: 0x000055555571e471 
runtest`_imp_create_dynamic_impl(module=<unavailable>, spec=0x00007ffff6e33780, 
file=<unavailable>) at import.c:2220:11
    frame #4: 0x000055555571e60b 
runtest`_imp_create_dynamic(module=0x00007ffff76ec830, args=0x00007ffff6e336f8, 
nargs=1) at import.c.h:330:20
    frame #5: 0x0000555555645fbe 
runtest`cfunction_vectorcall_FASTCALL(func=0x00007ffff7753050, 
args=0x00007ffff6e336f8, nargsf=<unavailable>, kwnames=0x0000000000000000) at 
methodobject.c:421:24
    frame #6: 0x00005555556042ca 
runtest`PyVectorcall_Call(callable=0x00007ffff7753050, tuple=<unavailable>, 
kwargs=<unavailable>) at call.c:199:24
    frame #7: 0x0000555555604771 runtest`PyCFunction_Call(func=<unavailable>, 
args=<unavailable>, kwargs=<unavailable>) at call.c:774:12
    frame #8: 0x00005555556eabf0 
runtest`do_call_core(tstate=0x000055555593f3c0, func=0x00007ffff7753050, 
callargs=0x00007ffff6e336e0, kwdict=0x00007ffff6e20ad0) at ceval.c:5007:9
    frame #9: 0x00005555556f8897 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559fa330, throwflag=<unavailable>) 
at ceval.c:3559:22
    frame #10: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #11: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7725860, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=2, 
kwnames=0x0000000000000000, kwargs=0x00007ffff76bf5b0, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x00007ffff792fdd0, 
qualname=0x00007ffff792fdd0) at ceval.c:4298:14
    frame #12: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #13: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00007ffff76bf5a0, callable=0x00007ffff7763b90) at abstract.h:127:11
    frame #14: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff79a0, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #15: 0x00005555556f834c 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff76bf410, throwflag=<unavailable>) 
at ceval.c:3469:23
    frame #16: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #17: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007ffff7fa63a0, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #18: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #19: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00007ffff7fa6390, callable=0x00007ffff76eaa50) at abstract.h:127:11
    frame #20: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff7b80, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #21: 0x00005555556f8296 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff7fa6210, throwflag=<unavailable>) 
at ceval.c:3486:23
    frame #22: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #23: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555a18ef8, 
nargs=1, globals=<unavailable>) at call.c:283:14
    frame #24: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #25: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775809, 
args=0x0000555555a18ef0, callable=0x00007ffff77624b0) at abstract.h:127:11
    frame #26: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff7d68, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #27: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555a18d70, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #28: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #29: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555ad9088, 
nargs=1, globals=<unavailable>) at call.c:283:14
    frame #30: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #31: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775809, 
args=0x0000555555ad9080, callable=0x00007ffff7762230) at abstract.h:127:11
    frame #32: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff7f48, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #33: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555ad8ed0, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #34: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #35: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555acca18, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #36: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #37: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x0000555555acca08, callable=0x00007ffff7671230) at abstract.h:127:11
    frame #38: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff8128, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #39: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555acc870, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #40: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #41: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007fffffff8250, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #42: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #43: 0x000055555560269e runtest`object_vacall at abstract.h:127:11
    frame #44: 0x0000555555602649 runtest`object_vacall [inlined] 
_PyObject_FastCall(nargs=2, args=0x00007fffffff8240, func=0x00007ffff7671190) 
at abstract.h:147
    frame #45: 0x0000555555602646 
runtest`object_vacall(base=0x0000000000000000, callable=0x00007ffff7671190, 
vargs=<unavailable>) at call.c:1186
    frame #46: 0x00005555556029c5 
runtest`_PyObject_CallMethodIdObjArgs(obj=0x0000000000000000, 
name=<unavailable>) at call.c:1244:24
    frame #47: 0x000055555571b710 
runtest`import_find_and_load(abs_name=0x00007ffff6e07760) at import.c:1697:11
    frame #48: 0x000055555571f5ed 
runtest`PyImport_ImportModuleLevelObject(name=0x00007ffff6e07760, 
globals=<unavailable>, locals=<unavailable>, fromlist=0x00007ffff6e07590, 
level=0) at import.c:1797:15
    frame #49: 0x00005555556e87ea 
runtest`import_name(tstate=0x000055555593f3c0, f=0x00005555559b5e00, 
name=0x00007ffff6e07760, fromlist=0x00007ffff6e07590, level=0x00005555558faf80) 
at ceval.c:5163:15
    frame #50: 0x00005555556f5f3b 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559b5e00, throwflag=<unavailable>) 
at ceval.c:2993:19
    frame #51: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #52: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff6e34110, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=0, 
kwnames=0x0000000000000000, kwargs=0x0000000000000000, kwcount=0, kwstep=2, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x0000000000000000, 
qualname=0x0000000000000000) at ceval.c:4298:14
    frame #53: 0x00005555556ecf38 runtest`PyEval_EvalCodeEx(_co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>, args=<unavailable>, 
argcount=<unavailable>, kws=<unavailable>, kwcount=0, defs=0x0000000000000000, 
defcount=0, kwdefs=0x0000000000000000, closure=0x0000000000000000) at 
ceval.c:4327:12
    frame #54: 0x00005555556ecf66 runtest`PyEval_EvalCode(co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>) at ceval.c:718:12
    frame #55: 0x00005555556e385b 
runtest`builtin_exec_impl(module=<unavailable>, source=0x00007ffff6e34110, 
globals=0x00007ffff6f1f470, locals=0x00007ffff6f1f470) at bltinmodule.c:1033:13
    frame #56: 0x00005555556e399e 
runtest`builtin_exec(module=0x00007ffff76d0a70, args=0x00007ffff6e18608, 
nargs=2) at bltinmodule.c.h:396:20
    frame #57: 0x0000555555645fbe 
runtest`cfunction_vectorcall_FASTCALL(func=0x00007ffff76d0830, 
args=0x00007ffff6e18608, nargsf=<unavailable>, kwnames=0x0000000000000000) at 
methodobject.c:421:24
    frame #58: 0x00005555556042ca 
runtest`PyVectorcall_Call(callable=0x00007ffff76d0830, tuple=<unavailable>, 
kwargs=<unavailable>) at call.c:199:24
    frame #59: 0x0000555555604771 runtest`PyCFunction_Call(func=<unavailable>, 
args=<unavailable>, kwargs=<unavailable>) at call.c:774:12
    frame #60: 0x00005555556eabf0 
runtest`do_call_core(tstate=0x000055555593f3c0, func=0x00007ffff76d0830, 
callargs=0x00007ffff6e185f0, kwdict=0x00007ffff6e0fd10) at ceval.c:5007:9
    frame #61: 0x00005555556f8897 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555992ff0, throwflag=<unavailable>) 
at ceval.c:3559:22
    frame #62: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #63: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7725860, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=3, 
kwnames=0x0000000000000000, kwargs=0x00007ffff7540798, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x00007ffff792fdd0, 
qualname=0x00007ffff792fdd0) at ceval.c:4298:14
    frame #64: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #65: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775811, 
args=0x00007ffff7540780, callable=0x00007ffff7763b90) at abstract.h:127:11
    frame #66: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff8b90, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #67: 0x00005555556f834c 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff75405f0, throwflag=<unavailable>) 
at ceval.c:3469:23
    frame #68: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #69: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007ffff76d5de0, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #70: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #71: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00007ffff76d5dd0, callable=0x00007ffff7910370) at abstract.h:127:11
    frame #72: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff8d70, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #73: 0x00005555556f8296 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff76d5c50, throwflag=<unavailable>) 
at ceval.c:3486:23
    frame #74: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #75: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00005555559fc038, 
nargs=1, globals=<unavailable>) at call.c:283:14
    frame #76: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #77: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775809, 
args=0x00005555559fc030, callable=0x00007ffff7762230) at abstract.h:127:11
    frame #78: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff8f58, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #79: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559fbe80, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #80: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #81: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555acb2f8, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #82: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #83: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x0000555555acb2e8, callable=0x00007ffff7671230) at abstract.h:127:11
    frame #84: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff9138, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #85: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555acb150, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #86: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #87: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007fffffff9260, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #88: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #89: 0x000055555560269e runtest`object_vacall at abstract.h:127:11
    frame #90: 0x0000555555602649 runtest`object_vacall [inlined] 
_PyObject_FastCall(nargs=2, args=0x00007fffffff9250, func=0x00007ffff7671190) 
at abstract.h:147
    frame #91: 0x0000555555602646 
runtest`object_vacall(base=0x0000000000000000, callable=0x00007ffff7671190, 
vargs=<unavailable>) at call.c:1186
    frame #92: 0x00005555556029c5 
runtest`_PyObject_CallMethodIdObjArgs(obj=0x0000000000000000, 
name=<unavailable>) at call.c:1244:24
    frame #93: 0x000055555571b710 
runtest`import_find_and_load(abs_name=0x00007ffff74d5b80) at import.c:1697:11
    frame #94: 0x000055555571f5ed 
runtest`PyImport_ImportModuleLevelObject(name=0x00007ffff74d5b80, 
globals=<unavailable>, locals=<unavailable>, fromlist=0x0000000000000000, 
level=0) at import.c:1797:15
    frame #95: 0x00005555556e2068 
runtest`builtin___import__(self=<unavailable>, args=<unavailable>, 
kwds=<unavailable>) at bltinmodule.c:279:12
    frame #96: 0x0000555555601749 
runtest`cfunction_call_varargs(func=0x00007ffff76d0fb0, 
args=0x00007ffff7822a00, kwargs=0x00007ffff76d3b30) at call.c:742:19
    frame #97: 0x000055555560477b runtest`PyCFunction_Call(func=<unavailable>, 
args=<unavailable>, kwargs=<unavailable>) at call.c:772:16
    frame #98: 0x00005555556eabf0 
runtest`do_call_core(tstate=0x000055555593f3c0, func=0x00007ffff76d0fb0, 
callargs=0x00007ffff7822a00, kwdict=0x00007ffff76d3b30) at ceval.c:5007:9
    frame #99: 0x00005555556f8897 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff6eb5220, throwflag=<unavailable>) 
at ceval.c:3559:22
    frame #100: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #101: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7725860, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=2, 
kwnames=0x0000000000000000, kwargs=0x0000555555aa7908, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x00007ffff792fdd0, 
qualname=0x00007ffff792fdd0) at ceval.c:4298:14
    frame #102: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #103: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x0000555555aa78f8, callable=0x00007ffff7763b90) at abstract.h:127:11
    frame #104: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffff9858, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #105: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555aa7740, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #106: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #107: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff78ef450, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=3, 
kwnames=0x0000000000000000, kwargs=0x00007fffffff9a48, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x00007ffff777ab90, 
closure=0x0000000000000000, name=0x00007ffff7959700, 
qualname=0x00007ffff7959700) at ceval.c:4298:14
    frame #108: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #109: 0x000055555560269e runtest`object_vacall at abstract.h:127:11
    frame #110: 0x0000555555602649 runtest`object_vacall [inlined] 
_PyObject_FastCall(nargs=3, args=0x00007fffffff9a30, func=0x00007ffff7671410) 
at abstract.h:147
    frame #111: 0x0000555555602646 
runtest`object_vacall(base=0x0000000000000000, callable=0x00007ffff7671410, 
vargs=<unavailable>) at call.c:1186
    frame #112: 0x00005555556029c5 
runtest`_PyObject_CallMethodIdObjArgs(obj=0x0000000000000000, 
name=<unavailable>) at call.c:1244:24
    frame #113: 0x000055555571f97f 
runtest`PyImport_ImportModuleLevelObject(name=0x00007ffff7fc7040, 
globals=<unavailable>, locals=<unavailable>, fromlist=0x00007ffff78bc820, 
level=1) at import.c:1869:25
    frame #114: 0x00005555556e87ea 
runtest`import_name(tstate=0x000055555593f3c0, f=0x00007ffff78e7410, 
name=0x00007ffff7fc7040, fromlist=0x00007ffff78bc820, level=0x00005555558fafa0) 
at ceval.c:5163:15
    frame #115: 0x00005555556f5f3b 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff78e7410, throwflag=<unavailable>) 
at ceval.c:2993:19
    frame #116: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #117: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff75f8c70, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=0, 
kwnames=0x0000000000000000, kwargs=0x0000000000000000, kwcount=0, kwstep=2, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x0000000000000000, 
qualname=0x0000000000000000) at ceval.c:4298:14
    frame #118: 0x00005555556ecf38 runtest`PyEval_EvalCodeEx(_co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>, args=<unavailable>, 
argcount=<unavailable>, kws=<unavailable>, kwcount=0, defs=0x0000000000000000, 
defcount=0, kwdefs=0x0000000000000000, closure=0x0000000000000000) at 
ceval.c:4327:12
    frame #119: 0x00005555556ecf66 runtest`PyEval_EvalCode(co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>) at ceval.c:718:12
    frame #120: 0x00005555556e385b 
runtest`builtin_exec_impl(module=<unavailable>, source=0x00007ffff75f8c70, 
globals=0x00007ffff76d39b0, locals=0x00007ffff76d39b0) at bltinmodule.c:1033:13
    frame #121: 0x00005555556e399e 
runtest`builtin_exec(module=0x00007ffff76d0a70, args=0x00007ffff7822ba8, 
nargs=2) at bltinmodule.c.h:396:20
    frame #122: 0x0000555555645fbe 
runtest`cfunction_vectorcall_FASTCALL(func=0x00007ffff76d0830, 
args=0x00007ffff7822ba8, nargsf=<unavailable>, kwnames=0x0000000000000000) at 
methodobject.c:421:24
    frame #123: 0x00005555556042ca 
runtest`PyVectorcall_Call(callable=0x00007ffff76d0830, tuple=<unavailable>, 
kwargs=<unavailable>) at call.c:199:24
    frame #124: 0x0000555555604771 runtest`PyCFunction_Call(func=<unavailable>, 
args=<unavailable>, kwargs=<unavailable>) at call.c:774:12
    frame #125: 0x00005555556eabf0 
runtest`do_call_core(tstate=0x000055555593f3c0, func=0x00007ffff76d0830, 
callargs=0x00007ffff7822b90, kwdict=0x00007ffff76d3a70) at ceval.c:5007:9
    frame #126: 0x00005555556f8897 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff75fbb90, throwflag=<unavailable>) 
at ceval.c:3559:22
    frame #127: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #128: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7725860, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=3, 
kwnames=0x0000000000000000, kwargs=0x00007ffff765a5f8, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x00007ffff792fdd0, 
qualname=0x00007ffff792fdd0) at ceval.c:4298:14
    frame #129: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #130: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775811, 
args=0x00007ffff765a5e0, callable=0x00007ffff7763b90) at abstract.h:127:11
    frame #131: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffa340, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #132: 0x00005555556f834c 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff765a450, throwflag=<unavailable>) 
at ceval.c:3469:23
    frame #133: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #134: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00005555559b0f00, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #135: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #136: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00005555559b0ef0, callable=0x00007ffff7910370) at abstract.h:127:11
    frame #137: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffa520, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #138: 0x00005555556f8296 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559b0d70, throwflag=<unavailable>) 
at ceval.c:3486:23
    frame #139: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #140: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555a18ce8, 
nargs=1, globals=<unavailable>) at call.c:283:14
    frame #141: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #142: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775809, 
args=0x0000555555a18ce0, callable=0x00007ffff7762230) at abstract.h:127:11
    frame #143: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffa708, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #144: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555a18b30, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #145: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #146: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00005555559b0208, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #147: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #148: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00005555559b01f8, callable=0x00007ffff7671230) at abstract.h:127:11
    frame #149: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffa8e8, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #150: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559b0060, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #151: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #152: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007fffffffaa10, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #153: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #154: 0x000055555560269e runtest`object_vacall at abstract.h:127:11
    frame #155: 0x0000555555602649 runtest`object_vacall [inlined] 
_PyObject_FastCall(nargs=2, args=0x00007fffffffaa00, func=0x00007ffff7671190) 
at abstract.h:147
    frame #156: 0x0000555555602646 
runtest`object_vacall(base=0x0000000000000000, callable=0x00007ffff7671190, 
vargs=<unavailable>) at call.c:1186
    frame #157: 0x00005555556029c5 
runtest`_PyObject_CallMethodIdObjArgs(obj=0x0000000000000000, 
name=<unavailable>) at call.c:1244:24
    frame #158: 0x000055555571b710 
runtest`import_find_and_load(abs_name=0x00007ffff77d54c0) at import.c:1697:11
    frame #159: 0x000055555571f5ed 
runtest`PyImport_ImportModuleLevelObject(name=0x00007ffff77d56a0, 
globals=<unavailable>, locals=<unavailable>, fromlist=0x00007ffff78b7550, 
level=1) at import.c:1797:15
    frame #160: 0x00005555556e87ea 
runtest`import_name(tstate=0x000055555593f3c0, f=0x00007ffff75fb9b0, 
name=0x00007ffff77d56a0, fromlist=0x00007ffff78b7550, level=0x00005555558fafa0) 
at ceval.c:5163:15
    frame #161: 0x00005555556f5f3b 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff75fb9b0, throwflag=<unavailable>) 
at ceval.c:2993:19
    frame #162: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #163: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff76271e0, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=0, 
kwnames=0x0000000000000000, kwargs=0x0000000000000000, kwcount=0, kwstep=2, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x0000000000000000, 
qualname=0x0000000000000000) at ceval.c:4298:14
    frame #164: 0x00005555556ecf38 runtest`PyEval_EvalCodeEx(_co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>, args=<unavailable>, 
argcount=<unavailable>, kws=<unavailable>, kwcount=0, defs=0x0000000000000000, 
defcount=0, kwdefs=0x0000000000000000, closure=0x0000000000000000) at 
ceval.c:4327:12
    frame #165: 0x00005555556ecf66 runtest`PyEval_EvalCode(co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>) at ceval.c:718:12
    frame #166: 0x00005555556e385b 
runtest`builtin_exec_impl(module=<unavailable>, source=0x00007ffff76271e0, 
globals=0x00007ffff77b9290, locals=0x00007ffff77b9290) at bltinmodule.c:1033:13
    frame #167: 0x00005555556e399e 
runtest`builtin_exec(module=0x00007ffff76d0a70, args=0x00007ffff770a9c8, 
nargs=2) at bltinmodule.c.h:396:20
    frame #168: 0x0000555555645fbe 
runtest`cfunction_vectorcall_FASTCALL(func=0x00007ffff76d0830, 
args=0x00007ffff770a9c8, nargsf=<unavailable>, kwnames=0x0000000000000000) at 
methodobject.c:421:24
    frame #169: 0x00005555556042ca 
runtest`PyVectorcall_Call(callable=0x00007ffff76d0830, tuple=<unavailable>, 
kwargs=<unavailable>) at call.c:199:24
    frame #170: 0x0000555555604771 runtest`PyCFunction_Call(func=<unavailable>, 
args=<unavailable>, kwargs=<unavailable>) at call.c:774:12
    frame #171: 0x00005555556eabf0 
runtest`do_call_core(tstate=0x000055555593f3c0, func=0x00007ffff76d0830, 
callargs=0x00007ffff770a9b0, kwdict=0x00007ffff77d5b90) at ceval.c:5007:9
    frame #172: 0x00005555556f8897 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff7663790, throwflag=<unavailable>) 
at ceval.c:3559:22
    frame #173: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #174: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7725860, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=3, 
kwnames=0x0000000000000000, kwargs=0x00007ffff78e73d8, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x00007ffff792fdd0, 
qualname=0x00007ffff792fdd0) at ceval.c:4298:14
    frame #175: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #176: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775811, 
args=0x00007ffff78e73c0, callable=0x00007ffff7763b90) at abstract.h:127:11
    frame #177: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffb350, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #178: 0x00005555556f834c 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff78e7230, throwflag=<unavailable>) 
at ceval.c:3469:23
    frame #179: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #180: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007ffff789dde0, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #181: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #182: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00007ffff789ddd0, callable=0x00007ffff7910370) at abstract.h:127:11
    frame #183: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffb530, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #184: 0x00005555556f8296 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff789dc50, throwflag=<unavailable>) 
at ceval.c:3486:23
    frame #185: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #186: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555a7db08, 
nargs=1, globals=<unavailable>) at call.c:283:14
    frame #187: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #188: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775809, 
args=0x0000555555a7db00, callable=0x00007ffff7762230) at abstract.h:127:11
    frame #189: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffb718, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #190: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555a7d950, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #191: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #192: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00005555559a69f8, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #193: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #194: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00005555559a69e8, callable=0x00007ffff7671230) at abstract.h:127:11
    frame #195: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffb8f8, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #196: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559a6850, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #197: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #198: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007fffffffba20, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #199: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #200: 0x000055555560269e runtest`object_vacall at abstract.h:127:11
    frame #201: 0x0000555555602649 runtest`object_vacall [inlined] 
_PyObject_FastCall(nargs=2, args=0x00007fffffffba10, func=0x00007ffff7671190) 
at abstract.h:147
    frame #202: 0x0000555555602646 
runtest`object_vacall(base=0x0000000000000000, callable=0x00007ffff7671190, 
vargs=<unavailable>) at call.c:1186
    frame #203: 0x00005555556029c5 
runtest`_PyObject_CallMethodIdObjArgs(obj=0x0000000000000000, 
name=<unavailable>) at call.c:1244:24
    frame #204: 0x000055555571b710 
runtest`import_find_and_load(abs_name=0x00007ffff78b77c0) at import.c:1697:11
    frame #205: 0x000055555571f5ed 
runtest`PyImport_ImportModuleLevelObject(name=0x00007ffff78b77c0, 
globals=<unavailable>, locals=<unavailable>, fromlist=0x00005555558d4380, 
level=0) at import.c:1797:15
    frame #206: 0x00005555556e87ea 
runtest`import_name(tstate=0x000055555593f3c0, f=0x00005555559dc6f0, 
name=0x00007ffff78b77c0, fromlist=0x00005555558d4380, level=0x00005555558faf80) 
at ceval.c:5163:15
    frame #207: 0x00005555556f5f3b 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559dc6f0, throwflag=<unavailable>) 
at ceval.c:2993:19
    frame #208: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #209: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff76d86c0, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=0, 
kwnames=0x0000000000000000, kwargs=0x0000000000000000, kwcount=0, kwstep=2, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x0000000000000000, 
qualname=0x0000000000000000) at ceval.c:4298:14
    frame #210: 0x00005555556ecf38 runtest`PyEval_EvalCodeEx(_co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>, args=<unavailable>, 
argcount=<unavailable>, kws=<unavailable>, kwcount=0, defs=0x0000000000000000, 
defcount=0, kwdefs=0x0000000000000000, closure=0x0000000000000000) at 
ceval.c:4327:12
    frame #211: 0x00005555556ecf66 runtest`PyEval_EvalCode(co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>) at ceval.c:718:12
    frame #212: 0x00005555556e385b 
runtest`builtin_exec_impl(module=<unavailable>, source=0x00007ffff76d86c0, 
globals=0x00007ffff6ed37d0, locals=0x00007ffff6ed37d0) at bltinmodule.c:1033:13
    frame #213: 0x00005555556e399e 
runtest`builtin_exec(module=0x00007ffff76d0a70, args=0x00007ffff770ac98, 
nargs=2) at bltinmodule.c.h:396:20
    frame #214: 0x0000555555645fbe 
runtest`cfunction_vectorcall_FASTCALL(func=0x00007ffff76d0830, 
args=0x00007ffff770ac98, nargsf=<unavailable>, kwnames=0x0000000000000000) at 
methodobject.c:421:24
    frame #215: 0x00005555556042ca 
runtest`PyVectorcall_Call(callable=0x00007ffff76d0830, tuple=<unavailable>, 
kwargs=<unavailable>) at call.c:199:24
    frame #216: 0x0000555555604771 runtest`PyCFunction_Call(func=<unavailable>, 
args=<unavailable>, kwargs=<unavailable>) at call.c:774:12
    frame #217: 0x00005555556eabf0 
runtest`do_call_core(tstate=0x000055555593f3c0, func=0x00007ffff76d0830, 
callargs=0x00007ffff770ac80, kwdict=0x00007ffff77b9350) at ceval.c:5007:9
    frame #218: 0x00005555556f8897 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559657c0, throwflag=<unavailable>) 
at ceval.c:3559:22
    frame #219: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #220: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7725860, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=3, 
kwnames=0x0000000000000000, kwargs=0x00007ffff76e31f8, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x00007ffff792fdd0, 
qualname=0x00007ffff792fdd0) at ceval.c:4298:14
    frame #221: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #222: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775811, 
args=0x00007ffff76e31e0, callable=0x00007ffff7763b90) at abstract.h:127:11
    frame #223: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffc360, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #224: 0x00005555556f834c 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff76e3050, throwflag=<unavailable>) 
at ceval.c:3469:23
    frame #225: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #226: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007ffff77dc9e0, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #227: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #228: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00007ffff77dc9d0, callable=0x00007ffff7910370) at abstract.h:127:11
    frame #229: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffc540, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #230: 0x00005555556f8296 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff77dc850, throwflag=<unavailable>) 
at ceval.c:3486:23
    frame #231: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #232: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555a20108, 
nargs=1, globals=<unavailable>) at call.c:283:14
    frame #233: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #234: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775809, 
args=0x0000555555a20100, callable=0x00007ffff7762230) at abstract.h:127:11
    frame #235: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffc728, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #236: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555a1ff50, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #237: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #238: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555a1fc48, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #239: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #240: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x0000555555a1fc38, callable=0x00007ffff7671230) at abstract.h:127:11
    frame #241: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffc908, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #242: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555a1faa0, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #243: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #244: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007fffffffca30, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #245: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #246: 0x000055555560269e runtest`object_vacall at abstract.h:127:11
    frame #247: 0x0000555555602649 runtest`object_vacall [inlined] 
_PyObject_FastCall(nargs=2, args=0x00007fffffffca20, func=0x00007ffff7671190) 
at abstract.h:147
    frame #248: 0x0000555555602646 
runtest`object_vacall(base=0x0000000000000000, callable=0x00007ffff7671190, 
vargs=<unavailable>) at call.c:1186
    frame #249: 0x00005555556029c5 
runtest`_PyObject_CallMethodIdObjArgs(obj=0x0000000000000000, 
name=<unavailable>) at call.c:1244:24
    frame #250: 0x000055555571b710 
runtest`import_find_and_load(abs_name=0x00007ffff6ed3640) at import.c:1697:11
    frame #251: 0x000055555571f5ed 
runtest`PyImport_ImportModuleLevelObject(name=0x00007ffff6ed3d60, 
globals=<unavailable>, locals=<unavailable>, fromlist=0x00007ffff7636b90, 
level=1) at import.c:1797:15
    frame #252: 0x00005555556e87ea 
runtest`import_name(tstate=0x000055555593f3c0, f=0x0000555555a226e0, 
name=0x00007ffff6ed3d60, fromlist=0x00007ffff7636b90, level=0x00005555558fafa0) 
at ceval.c:5163:15
    frame #253: 0x00005555556f5f3b 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555a226e0, throwflag=<unavailable>) 
at ceval.c:2993:19
    frame #254: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #255: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7897ad0, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=0, 
kwnames=0x0000000000000000, kwargs=0x0000000000000000, kwcount=0, kwstep=2, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x0000000000000000, 
qualname=0x0000000000000000) at ceval.c:4298:14
    frame #256: 0x00005555556ecf38 runtest`PyEval_EvalCodeEx(_co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>, args=<unavailable>, 
argcount=<unavailable>, kws=<unavailable>, kwcount=0, defs=0x0000000000000000, 
defcount=0, kwdefs=0x0000000000000000, closure=0x0000000000000000) at 
ceval.c:4327:12
    frame #257: 0x00005555556ecf66 runtest`PyEval_EvalCode(co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>) at ceval.c:718:12
    frame #258: 0x00005555556e385b 
runtest`builtin_exec_impl(module=<unavailable>, source=0x00007ffff7897ad0, 
globals=0x00007ffff787f0b0, locals=0x00007ffff787f0b0) at bltinmodule.c:1033:13
    frame #259: 0x00005555556e399e 
runtest`builtin_exec(module=0x00007ffff76d0a70, args=0x00007ffff774b1a8, 
nargs=2) at bltinmodule.c.h:396:20
    frame #260: 0x0000555555645fbe 
runtest`cfunction_vectorcall_FASTCALL(func=0x00007ffff76d0830, 
args=0x00007ffff774b1a8, nargsf=<unavailable>, kwnames=0x0000000000000000) at 
methodobject.c:421:24
    frame #261: 0x00005555556042ca 
runtest`PyVectorcall_Call(callable=0x00007ffff76d0830, tuple=<unavailable>, 
kwargs=<unavailable>) at call.c:199:24
    frame #262: 0x0000555555604771 runtest`PyCFunction_Call(func=<unavailable>, 
args=<unavailable>, kwargs=<unavailable>) at call.c:774:12
    frame #263: 0x00005555556eabf0 
runtest`do_call_core(tstate=0x000055555593f3c0, func=0x00007ffff76d0830, 
callargs=0x00007ffff774b190, kwdict=0x00007ffff6edcc50) at ceval.c:5007:9
    frame #264: 0x00005555556f8897 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff7930450, throwflag=<unavailable>) 
at ceval.c:3559:22
    frame #265: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #266: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff7725860, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=3, 
kwnames=0x0000000000000000, kwargs=0x00007ffff76bff18, kwcount=0, kwstep=1, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x00007ffff792fdd0, 
qualname=0x00007ffff792fdd0) at ceval.c:4298:14
    frame #267: 0x0000555555601dbd 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:435:12
    frame #268: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775811, 
args=0x00007ffff76bff00, callable=0x00007ffff7763b90) at abstract.h:127:11
    frame #269: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffd370, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #270: 0x00005555556f834c 
runtest`_PyEval_EvalFrameDefault(f=0x00007ffff76bfd70, throwflag=<unavailable>) 
at ceval.c:3469:23
    frame #271: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #272: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555987660, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #273: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #274: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x0000555555987650, callable=0x00007ffff7910370) at abstract.h:127:11
    frame #275: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffd550, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #276: 0x00005555556f8296 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559874d0, throwflag=<unavailable>) 
at ceval.c:3486:23
    frame #277: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #278: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x0000555555ad14d8, 
nargs=1, globals=<unavailable>) at call.c:283:14
    frame #279: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #280: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775809, 
args=0x0000555555ad14d0, callable=0x00007ffff7762230) at abstract.h:127:11
    frame #281: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffd738, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #282: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x0000555555ad1320, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #283: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #284: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00005555559c80d8, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #285: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #286: 0x00005555556eb811 runtest`call_function [inlined] 
_PyObject_Vectorcall(kwnames=0x0000000000000000, nargsf=9223372036854775810, 
args=0x00005555559c80c8, callable=0x00007ffff7671230) at abstract.h:127:11
    frame #287: 0x00005555556eb79f 
runtest`call_function(tstate=0x000055555593f3c0, pp_stack=0x00007fffffffd918, 
oparg=<unavailable>, kwnames=0x0000000000000000) at ceval.c:4987
    frame #288: 0x00005555556f83d4 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559c7f30, throwflag=<unavailable>) 
at ceval.c:3500:19
    frame #289: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #290: 0x000055555560134e 
runtest`function_code_fastcall(co=<unavailable>, args=0x00007fffffffda40, 
nargs=2, globals=<unavailable>) at call.c:283:14
    frame #291: 0x0000555555601eb6 
runtest`_PyFunction_Vectorcall(func=<unavailable>, stack=<unavailable>, 
nargsf=<unavailable>, kwnames=<unavailable>) at call.c:410:20
    frame #292: 0x000055555560269e runtest`object_vacall at abstract.h:127:11
    frame #293: 0x0000555555602649 runtest`object_vacall [inlined] 
_PyObject_FastCall(nargs=2, args=0x00007fffffffda30, func=0x00007ffff7671190) 
at abstract.h:147
    frame #294: 0x0000555555602646 
runtest`object_vacall(base=0x0000000000000000, callable=0x00007ffff7671190, 
vargs=<unavailable>) at call.c:1186
    frame #295: 0x00005555556029c5 
runtest`_PyObject_CallMethodIdObjArgs(obj=0x0000000000000000, 
name=<unavailable>) at call.c:1244:24
    frame #296: 0x000055555571b710 
runtest`import_find_and_load(abs_name=0x00007ffff77ef580) at import.c:1697:11
    frame #297: 0x000055555571f5ed 
runtest`PyImport_ImportModuleLevelObject(name=0x00007ffff77ef580, 
globals=<unavailable>, locals=<unavailable>, fromlist=0x00005555558d4380, 
level=0) at import.c:1797:15
    frame #298: 0x00005555556e87ea 
runtest`import_name(tstate=0x000055555593f3c0, f=0x00005555559c8cc0, 
name=0x00007ffff77ef580, fromlist=0x00005555558d4380, level=0x00005555558faf80) 
at ceval.c:5163:15
    frame #299: 0x00005555556f5f3b 
runtest`_PyEval_EvalFrameDefault(f=0x00005555559c8cc0, throwflag=<unavailable>) 
at ceval.c:2993:19
    frame #300: 0x00005555556ec25a runtest`PyEval_EvalFrameEx(f=<unavailable>, 
throwflag=<unavailable>) at ceval.c:741:12
    frame #301: 0x00005555556ecd40 
runtest`_PyEval_EvalCodeWithName(_co=0x00007ffff78f5380, globals=<unavailable>, 
locals=<unavailable>, args=<unavailable>, argcount=0, 
kwnames=0x0000000000000000, kwargs=0x0000000000000000, kwcount=0, kwstep=2, 
defs=0x0000000000000000, defcount=0, kwdefs=0x0000000000000000, 
closure=0x0000000000000000, name=0x0000000000000000, 
qualname=0x0000000000000000) at ceval.c:4298:14
    frame #302: 0x00005555556ecf38 runtest`PyEval_EvalCodeEx(_co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>, args=<unavailable>, 
argcount=<unavailable>, kws=<unavailable>, kwcount=0, defs=0x0000000000000000, 
defcount=0, kwdefs=0x0000000000000000, closure=0x0000000000000000) at 
ceval.c:4327:12
    frame #303: 0x00005555556ecf66 runtest`PyEval_EvalCode(co=<unavailable>, 
globals=<unavailable>, locals=<unavailable>) at ceval.c:718:12
    frame #304: 0x00005555555bc7ff 
runtest`run_eval_code_obj(co=0x00007ffff78f5380, globals=0x00007ffff79374d0, 
locals=0x00007ffff79374d0) at pythonrun.c:1117:9
    frame #305: 0x00005555555bcc12 runtest`run_mod(mod=<unavailable>, 
filename=<unavailable>, globals=0x00007ffff79374d0, locals=0x00007ffff79374d0, 
flags=<unavailable>, arena=<unavailable>) at pythonrun.c:1139:9
    frame #306: 0x00005555555bef69 runtest`PyRun_StringFlags(str=<unavailable>, 
start=257, globals=0x00007ffff79374d0, locals=0x00007ffff79374d0, 
flags=0x0000000000000000) at pythonrun.c:1026:15
    frame #307: 0x00005555555befcb 
runtest`PyRun_SimpleStringFlags(command="import unittest", 
flags=0x0000000000000000) at pythonrun.c:460:9
    frame #308: 0x00005555555b574c runtest`main + 92
    frame #309: 0x00007ffff7c6f002 libc.so.6`__libc_start_main + 242
    frame #310: 0x00005555555b561e runtest`_start + 46

----------
nosy: +stestagg

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue40965>
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