Build error

[ching2018]

ERROR: /root/tensorflow/third_party/llvm/BUILD:1:10: //third_party/llvm:expand_cmake_vars: This target is being built for Python 2 but (transitively) includes Python 3-only sources. You can get diagnostic information about which dependencies introduce this version requirement by running the find_requirements aspect. If this is used in a genrule, you may need to migrate from tools to exec_tools. For more info see the documentation for the srcs_version attribute: https://docs.bazel.build/versions/master/be/python.html#py_binary.srcs_version caused by //third_party/llvm:expand_cmake_vars

[adamcrume]

I suspect this would be fixed by upgrading TensorFlow, so you may want to follow #302.