Traceback (most recent call last):


 "demo/demo.py", line 11, in <module>

from detectron2.data import MetadataCatalog


 "~/.local/lib/python3.6/site-packages/detectron2-0.1.3-py3.6-linux-x86_64.egg/detectron2/data/__init__.py", line 4, in <module>

from .build import (


 "~/.local/lib/python3.6/site-packages/detectron2-0.1.3-py3.6-linux-x86_64.egg/detectron2/data/build.py", line 14, in <module>

from detectron2.structures import BoxMode


 "~/.local/lib/python3.6/site-packages/detectron2-0.1.3-py3.6-linux-x86_64.egg/detectron2/structures/__init__.py", line 6, in <module>

from .keypoints import Keypoints, heatmaps_to_keypoints


 "~/.local/lib/python3.6/site-packages/detectron2-0.1.3-py3.6-linux-x86_64.egg/detectron2/structures/keypoints.py", line 6, in <module>

from detectron2.layers import interpolate


 "~/.local/lib/python3.6/site-packages/detectron2-0.1.3-py3.6-linux-x86_64.egg/detectron2/layers/__init__.py", line 3, in <module>

from .deform_conv import DeformConv, ModulatedDeformConv


 "~/.local/lib/python3.6/site-packages/detectron2-0.1.3-py3.6-linux-x86_64.egg/detectron2/layers/deform_conv.py", line 10, in <module>

from detectron2 import _C
ImportError: ~/.local/lib/python3.6/site-packages/detectron2-0.1.3-py3.6-linux-x86_64.egg/detectron2/_C.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZN3c107Warning4warnENS_14SourceLocationERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

Traceback (most recent call last):


 "/home/ubuntu/ray/python/ray/worker.py", line 1694, in fetch_and_execute_function_to_run

function = pickle.loads(serialized_function)


 "/home/ubuntu/ray/python/ray/tune/registry.py", line 12, in <module>

from ray.tune.trainable import Trainable, wrap_function


 "/home/ubuntu/ray/python/ray/tune/__init__.py", line 6, in <module>

from ray.tune.tune import run_experiments


 "/home/ubuntu/ray/python/ray/tune/tune.py", line 8, in <module>

from ray.tune.hyperband import HyperBandScheduler


 "/home/ubuntu/ray/python/ray/tune/hyperband.py", line 8, in <module>

from ray.tune.trial_scheduler import FIFOScheduler, TrialScheduler


 "/home/ubuntu/ray/python/ray/tune/trial_scheduler.py", line 5, in <module>

from ray.tune.trial import Trial


 "/home/ubuntu/ray/python/ray/tune/trial.py", line 15, in <module>

from ray.tune.registry import _default_registry, get_registry, TRAINABLE_CLASS
ImportError: cannot import name '_default_registry'
