
Traceback (most recent call last):


 "/var/tmp/.luke_186d3c_salt/salt-call", line 15, in <module>

salt_call()


 "/var/tmp/.luke_186d3c_salt/py2/salt/scripts.py", line 386, in salt_call

import salt.cli.call


 "/var/tmp/.luke_186d3c_salt/py2/salt/cli/call.py", line 9, in <module>

import salt.cli.caller


 "/var/tmp/.luke_186d3c_salt/py2/salt/cli/caller.py", line 18, in <module>

import salt.loader


 "/var/tmp/.luke_186d3c_salt/py2/salt/loader.py", line 29, in <module>

import salt.utils.event


 "/var/tmp/.luke_186d3c_salt/py2/salt/utils/event.py", line 72, in <module>

import salt.payload


 "/var/tmp/.luke_186d3c_salt/py2/salt/payload.py", line 17, in <module>

import salt.crypt


 "/var/tmp/.luke_186d3c_salt/py2/salt/crypt.py", line 50, in <module>

import tornado.gen


 "/var/tmp/.luke_186d3c_salt/py2/tornado/gen.py", line 98, in <module>

from singledispatch import singledispatch
# backport

ImportError: No module named singledispatch

Traceback (most recent call last):


 "demo/fcos_demo.py", line 6, in <module>

from predictor import COCODemo


 "/home/yong/FCOS/FCOS/demo/predictor.py", line 6, in <module>

from maskrcnn_benchmark.modeling.detector import build_detection_model


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/modeling/detector/__init__.py", line 2, in <module>

from .detectors import build_detection_model


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/modeling/detector/detectors.py", line 2, in <module>

from .generalized_rcnn import GeneralizedRCNN


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/modeling/detector/generalized_rcnn.py", line 11, in <module>

from ..backbone import build_backbone


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/modeling/backbone/__init__.py", line 2, in <module>

from .backbone import build_backbone


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/modeling/backbone/backbone.py", line 7, in <module>

from maskrcnn_benchmark.modeling.make_layers import conv_with_kaiming_uniform


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/modeling/make_layers.py", line 10, in <module>

from maskrcnn_benchmark.layers import Conv2d


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/layers/__init__.py", line 9, in <module>

from .nms import nms


 "/home/yong/FCOS/FCOS/maskrcnn_benchmark/layers/nms.py", line 3, in <module>

from maskrcnn_benchmark import _C
ImportError: /home/yong/FCOS/FCOS/maskrcnn_benchmark/_C.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZN3c105ErrorC1ENS_14SourceLocationERKSs