#0  raise (sig=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007fc22e9c17bc in faulthandler_fatal_error (signum=6) at ./Modules/faulthandler.c:365
#2  <signal handler called>
#3  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#4  0x00007fc22da1e3fa in __GI_abort () at abort.c:89
#5  0x00007fc22da15e37 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x7fc22ea03e83 "_PyGCHead_REFS(gc) != 0", file=file@entry=0x7fc22ea03e40 "Modules/gcmodule.c", line=line@entry=365, function=function@entry=0x7fc22ea043b8 <__PRETTY_FUNCTION__.10987> "update_refs") at assert.c:92
#6  0x00007fc22da15ee2 in __GI___assert_fail (assertion=0x7fc22ea03e83 "_PyGCHead_REFS(gc) != 0", file=0x7fc22ea03e40 "Modules/gcmodule.c", line=365, function=0x7fc22ea043b8 <__PRETTY_FUNCTION__.10987> "update_refs") at assert.c:101
#7  0x00007fc22e93ad7f in update_refs (containers=0x7fc22ecaaa20 <generations>) at Modules/gcmodule.c:365
#8  0x00007fc22e93c05a in collect (generation=0, n_collected=0x7fc1ae7f19a0, n_uncollectable=0x7fc1ae7f19a8, nofail=0) at Modules/gcmodule.c:955
#9  0x00007fc22e93c706 in collect_with_callback (generation=0) at Modules/gcmodule.c:1128
#10 0x00007fc22e93c7bb in collect_generations () at Modules/gcmodule.c:1151
#11 0x00007fc22e93dbb2 in _PyObject_GC_Alloc (use_calloc=0, basicsize=48) at Modules/gcmodule.c:1726
#12 0x00007fc22e93dbeb in _PyObject_GC_Malloc (basicsize=48) at Modules/gcmodule.c:1736
#13 0x00007fc22e93dc28 in _PyObject_GC_New (tp=0x7fc22ec68f80 <_PyMethodWrapper_Type>) at Modules/gcmodule.c:1748
#14 0x00007fc22e757386 in PyWrapper_New (d=<wrapper_descriptor at remote 0x7fc22ed57ad8>, self=<_VarInfo at remote 0x7fc1f48b2d58>) at Objects/descrobject.c:1242
#15 0x00007fc22e75536f in wrapperdescr_get (descr=0x7fc22ed57ad8, obj=<_VarInfo at remote 0x7fc1f48b2d58>, type=<type at remote 0x55e73193c058>) at Objects/descrobject.c:164
#16 0x00007fc22e7ed03d in super_getattro (self=<super at remote 0x7fc1f48bd6e8>, name='__init__') at Objects/typeobject.c:7323
#17 0x00007fc22e7b8044 in PyObject_GetAttr (v=<super at remote 0x7fc1f48bd6e8>, name='__init__') at Objects/object.c:891
#18 0x00007fc22e8ba828 in _PyEval_EvalFrameDefault (f=Frame 0x55e731c35ce8, for file /stations/stations_transformer_utils.py, line 84, in __init__ (self=<_VarInfo at remote 0x7fc1f48b2d58>, args=(), kwargs={}), throwflag=0) at Python/ceval.c:2832
#19 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x55e731c35ce8, for file /stations/stations_transformer_utils.py, line 84, in __init__ (self=<_VarInfo at remote 0x7fc1f48b2d58>, args=(), kwargs={}), throwflag=0) at Python/ceval.c:718
#20 0x00007fc22e8c3dd7 in _PyEval_EvalCodeWithName (_co=<code at remote 0x7fc21d80d880>, globals={'__name__': 'stations_transformer_utils', '__doc__': None, '__package__': '', '__loader__': <SourceFileLoader(name='stations_transformer_utils', path='/stations/stations_transformer_utils.py') at remote 0x7fc21d868cf0>, '__spec__': <ModuleSpec(name='stations_transformer_utils', loader=<...>, origin='/stations/stations_transformer_utils.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/stations/__pycache__/stations_transformer_utils.cpython-36.pyc', _initializing=False) at remote 0x7fc21d868e28>, '__file__': '/stations/stations_transformer_utils.py', '__cached__': '/stations/__pycache__/stations_transformer_utils.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x55e730d910b8>, '__spec__': <ModuleSpec(name='builtins', loader=<type at remote 0x55e730d910b8>, origin=None, loade...(truncated), locals=0x0, args=0x7fc1ae7f3670, argcount=1, kwnames=0x0, kwargs=0x8, kwcount=0, kwstep=2, defs=0x0, defcount=0, kwdefs=0x0, closure=(<cell at remote 0x7fc21d7ec2f8>,), name='__init__', qualname='StationsTransformerBacklog._VarInfo.__init__') at Python/ceval.c:4139
#21 0x00007fc22e8c7665 in _PyFunction_FastCallDict (func=<function at remote 0x7fc21d84b788>, args=0x7fc1ae7f3670, nargs=1, kwargs=0x0) at Python/ceval.c:5042
#22 0x00007fc22e725349 in _PyObject_FastCallDict (func=<function at remote 0x7fc21d84b788>, args=0x7fc1ae7f3670, nargs=1, kwargs=0x0) at Objects/abstract.c:2295
#23 0x00007fc22e725649 in _PyObject_Call_Prepend (func=<function at remote 0x7fc21d84b788>, obj=<_VarInfo at remote 0x7fc1f48b2d58>, args=(), kwargs=0x0) at Objects/abstract.c:2358
#24 0x00007fc22e74d9fb in method_call (method=<method at remote 0x7fc1eef337c8>, args=(), kwargs=0x0) at Objects/classobject.c:317
#25 0x00007fc22e72506c in PyObject_Call (func=<method at remote 0x7fc1eef337c8>, args=(), kwargs=0x0) at Objects/abstract.c:2246
#26 0x00007fc22e7eb053 in slot_tp_init (self=<_VarInfo at remote 0x7fc1f48b2d58>, args=(), kwds=0x0) at Objects/typeobject.c:6407
#27 0x00007fc22e7d5715 in type_call (type=0x55e73193c058, args=(), kwds=0x0) at Objects/typeobject.c:915
#28 0x00007fc22e725407 in _PyObject_FastCallDict (func=<type at remote 0x55e73193c058>, args=0x0, nargs=0, kwargs=0x0) at Objects/abstract.c:2316
#29 0x00007fc22e8c65cc in PyEval_CallObjectWithKeywords (func=<type at remote 0x55e73193c058>, args=0x0, kwargs=0x0) at Python/ceval.c:4726
#30 0x00007fc22e97f34f in defdict_missing (dd=0x7fc1f488d4d8, key='temp_c') at ./Modules/_collectionsmodule.c:1985
#31 0x00007fc22e7b167d in _PyCFunction_FastCallDict (func_obj=<built-in method __missing__ of _StationInfo object at remote 0x7fc1f488d4d8>, args=0x7fc1ae7f3a90, nargs=1, kwargs=0x0) at Objects/methodobject.c:209
#32 0x00007fc22e72537e in _PyObject_FastCallDict (func=<built-in method __missing__ of _StationInfo object at remote 0x7fc1f488d4d8>, args=0x7fc1ae7f3a90, nargs=1, kwargs=0x0) at Objects/abstract.c:2298
#33 0x00007fc22e72712a in PyObject_CallFunctionObjArgs (callable=<built-in method __missing__ of _StationInfo object at remote 0x7fc1f488d4d8>) at Objects/abstract.c:2812
#34 0x00007fc22e79c96d in dict_subscript (mp=0x7fc1f488d4d8, key='temp_c') at Objects/dictobject.c:2145
#35 0x00007fc22e7b1306 in PyCFunction_Call (func=<built-in method __getitem__ of _StationInfo object at remote 0x7fc1f488d4d8>, args=('temp_c',), kwds=0x0) at Objects/methodobject.c:139
#36 0x00007fc22e72506c in PyObject_Call (func=<built-in method __getitem__ of _StationInfo object at remote 0x7fc1f488d4d8>, args=('temp_c',), kwargs=0x0) at Objects/abstract.c:2246
#37 0x00007fc22e7d6df9 in call_method (o=<_StationInfo(lat=<float at remote 0x7fc1f6b46238>, lon=<float at remote 0x7fc1f6b463a0>, elev_m=<float at remote 0x7fc1f6b463e8>) at remote 0x7fc1f488d4d8>, nameid=0x7fc22ec81e80 <id>, format=0x7fc22e9dfb03 "(O)") at Objects/typeobject.c:1453
#38 0x00007fc22e7e70de in slot_mp_subscript (self=<_StationInfo(lat=<float at remote 0x7fc1f6b46238>, lon=<float at remote 0x7fc1f6b463a0>, elev_m=<float at remote 0x7fc1f6b463e8>) at remote 0x7fc1f488d4d8>, arg1='temp_c') at Objects/typeobject.c:5961
#39 0x00007fc22e71eb6e in PyObject_GetItem (o=<_StationInfo(lat=<float at remote 0x7fc1f6b46238>, lon=<float at remote 0x7fc1f6b463a0>, elev_m=<float at remote 0x7fc1f6b463e8>) at remote 0x7fc1f488d4d8>, key='temp_c') at Objects/abstract.c:148
#40 0x00007fc22e8ae155 in _PyEval_EvalFrameDefault (f=Frame 0x55e731c33d08, for file /stations/stations_transformer_utils.py, line 98, in add_var_obs (self=<_StationInfo(lat=<float at remote 0x7fc1f6b46238>, lon=<float at remote 0x7fc1f6b463a0>, elev_m=<float at remote 0x7fc1f6b463e8>) at remote 0x7fc1f488d4d8>, cleaned_obs_data={'temp_c': <float at remote 0x7fc1f6b46430>, 'precip_1hr_mm': <float at remote 0x7fc1f6b46478>, 'dewpoint_c': -5, 'relative_humidity': <float at remote 0x7fc1f6b465e0>, 'wind_gust_kph': <float at remote 0x7fc1f6b46598>, 'wind_kph': <float at remote 0x7fc1f6b46550>}, obs_epoch=1501412382, var_name='temp_c', obs_value=<float at remote 0x7fc1f6b46430>), throwflag=0) at Python/ceval.c:1475
#41 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x55e731c33d08, for file /stations/stations_transformer_utils.py, line 98, in add_var_obs (self=<_StationInfo(lat=<float at remote 0x7fc1f6b46238>, lon=<float at remote 0x7fc1f6b463a0>, elev_m=<float at remote 0x7fc1f6b463e8>) at remote 0x7fc1f488d4d8>, cleaned_obs_data={'temp_c': <float at remote 0x7fc1f6b46430>, 'precip_1hr_mm': <float at remote 0x7fc1f6b46478>, 'dewpoint_c': -5, 'relative_humidity': <float at remote 0x7fc1f6b465e0>, 'wind_gust_kph': <float at remote 0x7fc1f6b46598>, 'wind_kph': <float at remote 0x7fc1f6b46550>}, obs_epoch=1501412382, var_name='temp_c', obs_value=<float at remote 0x7fc1f6b46430>), throwflag=0) at Python/ceval.c:718
#42 0x00007fc22e8c6eab in _PyFunction_FastCall (co=0x7fc21d85d040, args=0x55e731a482a8, nargs=3, globals={'__name__': 'stations_transformer_utils', '__doc__': None, '__package__': '', '__loader__': <SourceFileLoader(name='stations_transformer_utils', path='/stations/stations_transformer_utils.py') at remote 0x7fc21d868cf0>, '__spec__': <ModuleSpec(name='stations_transformer_utils', loader=<...>, origin='/stations/stations_transformer_utils.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/stations/__pycache__/stations_transformer_utils.cpython-36.pyc', _initializing=False) at remote 0x7fc21d868e28>, '__file__': '/stations/stations_transformer_utils.py', '__cached__': '/stations/__pycache__/stations_transformer_utils.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x55e730d910b8>, '__spec__': <ModuleSpec(name='builtins', loader=<type at remote 0x55e730d910b8>, origin=None, loade...(truncated)) at Python/ceval.c:4891
#43 0x00007fc22e8c70d4 in fast_function (func=<function at remote 0x7fc21d84b8f8>, stack=0x55e731a48290, nargs=3, kwnames=0x0) at Python/ceval.c:4926
#44 0x00007fc22e8c6b79 in call_function (pp_stack=0x7fc1ae7f5878, oparg=2, kwnames=0x0) at Python/ceval.c:4830
#45 0x00007fc22e8be5d2 in _PyEval_EvalFrameDefault (f=Frame 0x55e731a480b8, for file /stations/stations_transformer_utils.py, line 192, in _process_queued_obs (self=<StationsTransformerBacklog(_logger=<Logger(filters=[], name='transformer.WU', level=0, parent=<RootLogger(filters=[], name='root', level=20, parent=None, propagate=True, handlers=[<SysLogHandler(filters=[], _name='rsyslog-/var/log/fbn/loggly.log', level=0, formatter=<ISO8601JsonFormatter(json_default=<function at remote 0x7fc2293a3eb8>, json_encoder=None, json_serializer=<function at remote 0x7fc2293d2110>, prefix='StationsTransformer: ', _style=<PercentStyle(_fmt='%(timestamp)s %(levelname)s %(process)d %(name)s %(message)s %(module)s %(lineno)s') at remote 0x7fc21eca2260>, _fmt='%(timestamp)s %(levelname)s %(process)d %(name)s %(message)s %(module)s %(lineno)s', datefmt=None, _required_fields=['timestamp', 'levelname', 'process', 'name', 'message', 'module', 'lineno'], _skip_fields={'timestamp': 'timestamp', 'levelname': 'levelname', 'process': 'process', 'name': 'name', 'message': 'message', 'mod...(truncated), throwflag=0) at Python/ceval.c:3295
#46 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x55e731a480b8, for file /stations/stations_transformer_utils.py, line 192, in _process_queued_obs (self=<StationsTransformerBacklog(_logger=<Logger(filters=[], name='transformer.WU', level=0, parent=<RootLogger(filters=[], name='root', level=20, parent=None, propagate=True, handlers=[<SysLogHandler(filters=[], _name='rsyslog-/var/log/fbn/loggly.log', level=0, formatter=<ISO8601JsonFormatter(json_default=<function at remote 0x7fc2293a3eb8>, json_encoder=None, json_serializer=<function at remote 0x7fc2293d2110>, prefix='StationsTransformer: ', _style=<PercentStyle(_fmt='%(timestamp)s %(levelname)s %(process)d %(name)s %(message)s %(module)s %(lineno)s') at remote 0x7fc21eca2260>, _fmt='%(timestamp)s %(levelname)s %(process)d %(name)s %(message)s %(module)s %(lineno)s', datefmt=None, _required_fields=['timestamp', 'levelname', 'process', 'name', 'message', 'module', 'lineno'], _skip_fields={'timestamp': 'timestamp', 'levelname': 'levelname', 'process': 'process', 'name': 'name', 'message': 'message', 'mod...(truncated), throwflag=0) at Python/ceval.c:718
#47 0x00007fc22e8c6eab in _PyFunction_FastCall (co=0x7fc21d85d700, args=0x7fc1ae7f6f68, nargs=1, globals={'__name__': 'stations_transformer_utils', '__doc__': None, '__package__': '', '__loader__': <SourceFileLoader(name='stations_transformer_utils', path='/stations/stations_transformer_utils.py') at remote 0x7fc21d868cf0>, '__spec__': <ModuleSpec(name='stations_transformer_utils', loader=<...>, origin='/stations/stations_transformer_utils.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/stations/__pycache__/stations_transformer_utils.cpython-36.pyc', _initializing=False) at remote 0x7fc21d868e28>, '__file__': '/stations/stations_transformer_utils.py', '__cached__': '/stations/__pycache__/stations_transformer_utils.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x55e730d910b8>, '__spec__': <ModuleSpec(name='builtins', loader=<type at remote 0x55e730d910b8>, origin=None, loade...(truncated)) at Python/ceval.c:4891
#48 0x00007fc22e8c73dc in _PyFunction_FastCallDict (func=<function at remote 0x7fc21d84bd48>, args=0x7fc1ae7f6f60, nargs=1, kwargs={}) at Python/ceval.c:4993
#49 0x00007fc22e725349 in _PyObject_FastCallDict (func=<function at remote 0x7fc21d84bd48>, args=0x7fc1ae7f6f60, nargs=1, kwargs={}) at Objects/abstract.c:2295
#50 0x00007fc22e725649 in _PyObject_Call_Prepend (func=<function at remote 0x7fc21d84bd48>, obj=<StationsTransformerBacklog(_logger=<Logger(filters=[], name='transformer.WU', level=0, parent=<RootLogger(filters=[], name='root', level=20, parent=None, propagate=True, handlers=[<SysLogHandler(filters=[], _name='rsyslog-/var/log/fbn/loggly.log', level=0, formatter=<ISO8601JsonFormatter(json_default=<function at remote 0x7fc2293a3eb8>, json_encoder=None, json_serializer=<function at remote 0x7fc2293d2110>, prefix='StationsTransformer: ', _style=<PercentStyle(_fmt='%(timestamp)s %(levelname)s %(process)d %(name)s %(message)s %(module)s %(lineno)s') at remote 0x7fc21eca2260>, _fmt='%(timestamp)s %(levelname)s %(process)d %(name)s %(message)s %(module)s %(lineno)s', datefmt=None, _required_fields=['timestamp', 'levelname', 'process', 'name', 'message', 'module', 'lineno'], _skip_fields={'timestamp': 'timestamp', 'levelname': 'levelname', 'process': 'process', 'name': 'name', 'message': 'message', 'module': 'module', 'lineno': 'lineno', 'args': 'args', 'asctime': 'asctime', 'created': 'created', 'exc_info': 'ex...(truncated), args=(), kwargs={}) at Objects/abstract.c:2358
#51 0x00007fc22e74d9fb in method_call (method=<method at remote 0x7fc205ebd448>, args=(), kwargs={}) at Objects/classobject.c:317
#52 0x00007fc22e72506c in PyObject_Call (func=<method at remote 0x7fc205ebd448>, args=(), kwargs={}) at Objects/abstract.c:2246
#53 0x00007fc22e8c7923 in do_call_core (func=<method at remote 0x7fc205ebd448>, callargs=(), kwdict={}) at Python/ceval.c:5078
#54 0x00007fc22e8bf000 in _PyEval_EvalFrameDefault (f=Frame 0x55e731b17a38, for file /usr/local/lib/python3.6/concurrent/futures/thread.py, line 55, in run (self=<_WorkItem(future=<Future(_condition=<Condition(_lock=<_thread.RLock at remote 0x7fc21d219280>, acquire=<built-in method acquire of _thread.RLock object at remote 0x7fc21d219280>, release=<built-in method release of _thread.RLock object at remote 0x7fc21d219280>, _release_save=<built-in method _release_save of _thread.RLock object at remote 0x7fc21d219280>, _acquire_restore=<built-in method _acquire_restore of _thread.RLock object at remote 0x7fc21d219280>, _is_owned=<built-in method _is_owned of _thread.RLock object at remote 0x7fc21d219280>, _waiters=<collections.deque at remote 0x7fc21d233188>) at remote 0x7fc1f6bbaf60>, _state='RUNNING', _result=None, _exception=None, _waiters=[], _done_callbacks=[<function at remote 0x7fc2140c9f70>]) at remote 0x7fc1febad948>, fn=<method at remote 0x7fc205ebd448>, args=(), kwargs={}) at remote 0x7fc2140cc468>), throwflag=0) at Python/ceval.c:3377
#55 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x55e731b17a38, for file /usr/local/lib/python3.6/concurrent/futures/thread.py, line 55, in run (self=<_WorkItem(future=<Future(_condition=<Condition(_lock=<_thread.RLock at remote 0x7fc21d219280>, acquire=<built-in method acquire of _thread.RLock object at remote 0x7fc21d219280>, release=<built-in method release of _thread.RLock object at remote 0x7fc21d219280>, _release_save=<built-in method _release_save of _thread.RLock object at remote 0x7fc21d219280>, _acquire_restore=<built-in method _acquire_restore of _thread.RLock object at remote 0x7fc21d219280>, _is_owned=<built-in method _is_owned of _thread.RLock object at remote 0x7fc21d219280>, _waiters=<collections.deque at remote 0x7fc21d233188>) at remote 0x7fc1f6bbaf60>, _state='RUNNING', _result=None, _exception=None, _waiters=[], _done_callbacks=[<function at remote 0x7fc2140c9f70>]) at remote 0x7fc1febad948>, fn=<method at remote 0x7fc205ebd448>, args=(), kwargs={}) at remote 0x7fc2140cc468>), throwflag=0) at Python/ceval.c:718
#56 0x00007fc22e8c6eab in _PyFunction_FastCall (co=0x7fc22cd7f640, args=0x7fc1a4000f98, nargs=1, globals={'__name__': 'concurrent.futures.thread', '__doc__': 'Implements ThreadPoolExecutor.', '__package__': 'concurrent.futures', '__loader__': <SourceFileLoader(name='concurrent.futures.thread', path='/usr/local/lib/python3.6/concurrent/futures/thread.py') at remote 0x7fc22ccb51f8>, '__spec__': <ModuleSpec(name='concurrent.futures.thread', loader=<...>, origin='/usr/local/lib/python3.6/concurrent/futures/thread.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/usr/local/lib/python3.6/concurrent/futures/__pycache__/thread.cpython-36.pyc', _initializing=False) at remote 0x7fc22ccb52c8>, '__file__': '/usr/local/lib/python3.6/concurrent/futures/thread.py', '__cached__': '/usr/local/lib/python3.6/concurrent/futures/__pycache__/thread.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x5...(truncated)) at Python/ceval.c:4891
#57 0x00007fc22e8c70d4 in fast_function (func=<function at remote 0x7fc22cc5e338>, stack=0x7fc1a4000f90, nargs=1, kwnames=0x0) at Python/ceval.c:4926
#58 0x00007fc22e8c6b79 in call_function (pp_stack=0x7fc1ae7f8ad8, oparg=0, kwnames=0x0) at Python/ceval.c:4830
#59 0x00007fc22e8be5d2 in _PyEval_EvalFrameDefault (f=Frame 0x7fc1a4000de8, for file /usr/local/lib/python3.6/concurrent/futures/thread.py, line 66, in _worker (executor_reference=<weakref at remote 0x7fc1d5734758>, work_queue=<Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all_tasks_done=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acqui...(truncated), throwflag=0) at Python/ceval.c:3295
#60 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x7fc1a4000de8, for file /usr/local/lib/python3.6/concurrent/futures/thread.py, line 66, in _worker (executor_reference=<weakref at remote 0x7fc1d5734758>, work_queue=<Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all_tasks_done=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acqui...(truncated), throwflag=0) at Python/ceval.c:718
#61 0x00007fc22e8c3dd7 in _PyEval_EvalCodeWithName (_co=<code at remote 0x7fc22cd19040>, globals={'__name__': 'concurrent.futures.thread', '__doc__': 'Implements ThreadPoolExecutor.', '__package__': 'concurrent.futures', '__loader__': <SourceFileLoader(name='concurrent.futures.thread', path='/usr/local/lib/python3.6/concurrent/futures/thread.py') at remote 0x7fc22ccb51f8>, '__spec__': <ModuleSpec(name='concurrent.futures.thread', loader=<...>, origin='/usr/local/lib/python3.6/concurrent/futures/thread.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/usr/local/lib/python3.6/concurrent/futures/__pycache__/thread.cpython-36.pyc', _initializing=False) at remote 0x7fc22ccb52c8>, '__file__': '/usr/local/lib/python3.6/concurrent/futures/thread.py', '__cached__': '/usr/local/lib/python3.6/concurrent/futures/__pycache__/thread.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x5...(truncated), locals=0x0, args=0x7fc1f23dcd30, argcount=2, kwnames=0x7fc22ed3d080, kwargs=0x7fc22ed3d088, kwcount=0, kwstep=2, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0, name=0x0, qualname=0x0) at Python/ceval.c:4139
#62 0x00007fc22e8c3f46 in PyEval_EvalCodeEx (_co=<code at remote 0x7fc22cd19040>, globals={'__name__': 'concurrent.futures.thread', '__doc__': 'Implements ThreadPoolExecutor.', '__package__': 'concurrent.futures', '__loader__': <SourceFileLoader(name='concurrent.futures.thread', path='/usr/local/lib/python3.6/concurrent/futures/thread.py') at remote 0x7fc22ccb51f8>, '__spec__': <ModuleSpec(name='concurrent.futures.thread', loader=<...>, origin='/usr/local/lib/python3.6/concurrent/futures/thread.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/usr/local/lib/python3.6/concurrent/futures/__pycache__/thread.cpython-36.pyc', _initializing=False) at remote 0x7fc22ccb52c8>, '__file__': '/usr/local/lib/python3.6/concurrent/futures/thread.py', '__cached__': '/usr/local/lib/python3.6/concurrent/futures/__pycache__/thread.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x5...(truncated), locals=0x0, args=0x7fc1f23dcd30, argcount=2, kws=0x7fc22ed3d080, kwcount=0, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0) at Python/ceval.c:4160
#63 0x00007fc22e7785f2 in function_call (func=<function at remote 0x7fc22cc5e1c8>, arg=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all_tasks_done=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, ...(truncated), kw={}) at Objects/funcobject.c:604
#64 0x00007fc22e72506c in PyObject_Call (func=<function at remote 0x7fc22cc5e1c8>, args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all_tasks_done=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, ...(truncated), kwargs={}) at Objects/abstract.c:2246
#65 0x00007fc22e8c7923 in do_call_core (func=<function at remote 0x7fc22cc5e1c8>, callargs=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all_tasks_done=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, ...(truncated), kwdict={}) at Python/ceval.c:5078
#66 0x00007fc22e8bf000 in _PyEval_EvalFrameDefault (f=Frame 0x55e731c4de38, for file /usr/local/lib/python3.6/threading.py, line 864, in run (self=<Thread(_target=<function at remote 0x7fc22cc5e1c8>, _name='<concurrent.futures.thread.ThreadPoolExecutor object at 0x7fc21d215740>_19', _args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all...(truncated), throwflag=0) at Python/ceval.c:3377
#67 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x55e731c4de38, for file /usr/local/lib/python3.6/threading.py, line 864, in run (self=<Thread(_target=<function at remote 0x7fc22cc5e1c8>, _name='<concurrent.futures.thread.ThreadPoolExecutor object at 0x7fc21d215740>_19', _args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all...(truncated), throwflag=0) at Python/ceval.c:718
#68 0x00007fc22e8c6eab in _PyFunction_FastCall (co=0x7fc22cd05ac0, args=0x55e731d13128, nargs=1, globals={'__name__': 'threading', '__doc__': "Thread module emulating a subset of Java's threading model.", '__package__': '', '__loader__': <SourceFileLoader(name='threading', path='/usr/local/lib/python3.6/threading.py') at remote 0x7fc22cce2dc0>, '__spec__': <ModuleSpec(name='threading', loader=<...>, origin='/usr/local/lib/python3.6/threading.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/usr/local/lib/python3.6/__pycache__/threading.cpython-36.pyc', _initializing=False) at remote 0x7fc22ccf42c8>, '__file__': '/usr/local/lib/python3.6/threading.py', '__cached__': '/usr/local/lib/python3.6/__pycache__/threading.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x55e730d910b8>, '__spec__': <ModuleSpec(name='builtins', loader=<type at remote 0x55e730d910b8>, origin=None, loader_st...(truncated)) at Python/ceval.c:4891
#69 0x00007fc22e8c70d4 in fast_function (func=<function at remote 0x7fc22cc954a8>, stack=0x55e731d13120, nargs=1, kwnames=0x0) at Python/ceval.c:4926
#70 0x00007fc22e8c6b79 in call_function (pp_stack=0x7fc1ae7fbe48, oparg=0, kwnames=0x0) at Python/ceval.c:4830
#71 0x00007fc22e8be5d2 in _PyEval_EvalFrameDefault (f=Frame 0x55e731d12f78, for file /usr/local/lib/python3.6/threading.py, line 916, in _bootstrap_inner (self=<Thread(_target=<function at remote 0x7fc22cc5e1c8>, _name='<concurrent.futures.thread.ThreadPoolExecutor object at 0x7fc21d215740>_19', _args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21...(truncated), throwflag=0) at Python/ceval.c:3295
#72 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x55e731d12f78, for file /usr/local/lib/python3.6/threading.py, line 916, in _bootstrap_inner (self=<Thread(_target=<function at remote 0x7fc22cc5e1c8>, _name='<concurrent.futures.thread.ThreadPoolExecutor object at 0x7fc21d215740>_19', _args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21...(truncated), throwflag=0) at Python/ceval.c:718
#73 0x00007fc22e8c6eab in _PyFunction_FastCall (co=0x7fc22cd05dc0, args=0x55e732417cf0, nargs=1, globals={'__name__': 'threading', '__doc__': "Thread module emulating a subset of Java's threading model.", '__package__': '', '__loader__': <SourceFileLoader(name='threading', path='/usr/local/lib/python3.6/threading.py') at remote 0x7fc22cce2dc0>, '__spec__': <ModuleSpec(name='threading', loader=<...>, origin='/usr/local/lib/python3.6/threading.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/usr/local/lib/python3.6/__pycache__/threading.cpython-36.pyc', _initializing=False) at remote 0x7fc22ccf42c8>, '__file__': '/usr/local/lib/python3.6/threading.py', '__cached__': '/usr/local/lib/python3.6/__pycache__/threading.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x55e730d910b8>, '__spec__': <ModuleSpec(name='builtins', loader=<type at remote 0x55e730d910b8>, origin=None, loader_st...(truncated)) at Python/ceval.c:4891
#74 0x00007fc22e8c70d4 in fast_function (func=<function at remote 0x7fc22cc95788>, stack=0x55e732417ce8, nargs=1, kwnames=0x0) at Python/ceval.c:4926
#75 0x00007fc22e8c6b79 in call_function (pp_stack=0x7fc1ae7fd6a8, oparg=0, kwnames=0x0) at Python/ceval.c:4830
#76 0x00007fc22e8be5d2 in _PyEval_EvalFrameDefault (f=Frame 0x55e732417b58, for file /usr/local/lib/python3.6/threading.py, line 884, in _bootstrap (self=<Thread(_target=<function at remote 0x7fc22cc5e1c8>, _name='<concurrent.futures.thread.ThreadPoolExecutor object at 0x7fc21d215740>_19', _args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e...(truncated), throwflag=0) at Python/ceval.c:3295
#77 0x00007fc22e8aaadf in PyEval_EvalFrameEx (f=Frame 0x55e732417b58, for file /usr/local/lib/python3.6/threading.py, line 884, in _bootstrap (self=<Thread(_target=<function at remote 0x7fc22cc5e1c8>, _name='<concurrent.futures.thread.ThreadPoolExecutor object at 0x7fc21d215740>_19', _args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e...(truncated), throwflag=0) at Python/ceval.c:718
#78 0x00007fc22e8c6eab in _PyFunction_FastCall (co=0x7fc22cd05b80, args=0x7fc1ae7fed98, nargs=1, globals={'__name__': 'threading', '__doc__': "Thread module emulating a subset of Java's threading model.", '__package__': '', '__loader__': <SourceFileLoader(name='threading', path='/usr/local/lib/python3.6/threading.py') at remote 0x7fc22cce2dc0>, '__spec__': <ModuleSpec(name='threading', loader=<...>, origin='/usr/local/lib/python3.6/threading.py', loader_state=None, submodule_search_locations=None, _set_fileattr=True, _cached='/usr/local/lib/python3.6/__pycache__/threading.cpython-36.pyc', _initializing=False) at remote 0x7fc22ccf42c8>, '__file__': '/usr/local/lib/python3.6/threading.py', '__cached__': '/usr/local/lib/python3.6/__pycache__/threading.cpython-36.pyc', '__builtins__': {'__name__': 'builtins', '__doc__': "Built-in functions, exceptions, and other objects.\n\nNoteworthy: None is the `nil' object; Ellipsis represents `...' in slices.", '__package__': '', '__loader__': <type at remote 0x55e730d910b8>, '__spec__': <ModuleSpec(name='builtins', loader=<type at remote 0x55e730d910b8>, origin=None, loader_st...(truncated)) at Python/ceval.c:4891
#79 0x00007fc22e8c73dc in _PyFunction_FastCallDict (func=<function at remote 0x7fc22cc95560>, args=0x7fc1ae7fed90, nargs=1, kwargs=0x0) at Python/ceval.c:4993
#80 0x00007fc22e725349 in _PyObject_FastCallDict (func=<function at remote 0x7fc22cc95560>, args=0x7fc1ae7fed90, nargs=1, kwargs=0x0) at Objects/abstract.c:2295
#81 0x00007fc22e725649 in _PyObject_Call_Prepend (func=<function at remote 0x7fc22cc95560>, obj=<Thread(_target=<function at remote 0x7fc22cc5e1c8>, _name='<concurrent.futures.thread.ThreadPoolExecutor object at 0x7fc21d215740>_19', _args=(<weakref at remote 0x7fc1d5734758>, <Queue(maxsize=0, queue=<collections.deque at remote 0x7fc21d1f4d68>, mutex=<_thread.lock at remote 0x7fc21d2d14b8>, not_empty=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e00>) at remote 0x7fc21d215810>, not_full=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in method acquire of _thread.lock object at remote 0x7fc21d2d14b8>, release=<built-in method release of _thread.lock object at remote 0x7fc21d2d14b8>, _waiters=<collections.deque at remote 0x7fc21d1f4e98>) at remote 0x7fc21d2158e0>, all_tasks_done=<Condition(_lock=<_thread.lock at remote 0x7fc21d2d14b8>, acquire=<built-in metho...(truncated), args=(), kwargs=0x0) at Objects/abstract.c:2358
#82 0x00007fc22e74d9fb in method_call (method=<method at remote 0x7fc1f79fb058>, args=(), kwargs=0x0) at Objects/classobject.c:317
#83 0x00007fc22e72506c in PyObject_Call (func=<method at remote 0x7fc1f79fb058>, args=(), kwargs=0x0) at Objects/abstract.c:2246
#84 0x00007fc22e8c65e5 in PyEval_CallObjectWithKeywords (func=<method at remote 0x7fc1f79fb058>, args=(), kwargs=0x0) at Python/ceval.c:4729
#85 0x00007fc22e93fcce in t_bootstrap (boot_raw=0x7fc1f6bacbc8) at ./Modules/_threadmodule.c:998
#86 0x00007fc22e49b494 in start_thread (arg=0x7fc1ae7ff700) at pthread_create.c:333
#87 0x00007fc22dad2aff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97


(gdb) py-bt
Traceback (most recent call first):
  Garbage-collecting
  File "/stations/stations_transformer_utils.py", line 84, in __init__
    super().__init__(*args, **kwargs)
  <built-in method __missing__ of _StationInfo object at remote 0x7fc1f488d4d8>
  <built-in method __getitem__ of _StationInfo object at remote 0x7fc1f488d4d8>
  File "/stations/stations_transformer_utils.py", line 98, in add_var_obs
    self[var_name].append((obs_epoch, obs_value))
  File "/stations/stations_transformer_utils.py", line 192, in _process_queued_obs
    stn_info.add_var_obs(cleaned_obs_data, obs_epoch)
  File "/usr/local/lib/python3.6/concurrent/futures/thread.py", line 55, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.6/concurrent/futures/thread.py", line 66, in _worker
    work_item.run()
  File "/usr/local/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/local/lib/python3.6/threading.py", line 884, in _bootstrap
    self._bootstrap_inner()