Executing genrule //tensorflow:python_api_gen failed (Exit 1) bash failed: error executing command /bin/bash -c ...

ERROR: /Users/yangyan-ling/tensorflow/tensorflow/BUILD:541:1: Executing genrule //tensorflow:python_api_gen failed (Exit 1) bash failed: error executing command /bin/bash -c ... (remaining 1 argument(s) skipped)

Use --sandbox_debug to see verbose messages from the sandbox
Traceback (most recent call last):
  File "/private/var/tmp/_bazel_yangyan-ling/2ce5cc8600b6d4faf46244230a6eedc1/sandbox/darwin-sandbox/5695/execroot/org_tensorflow/bazel-out/host/bin/tensorflow/tools/api/generator/create_python_api.runfiles/org_tensorflow/tensorflow/tools/api/generator/create_python_api.py", line 27, in <module>
    from tensorflow.python.util import tf_decorator
  File "/private/var/tmp/_bazel_yangyan-ling/2ce5cc8600b6d4faf46244230a6eedc1/sandbox/darwin-sandbox/5695/execroot/org_tensorflow/bazel-out/host/bin/tensorflow/tools/api/generator/create_python_api.runfiles/org_tensorflow/tensorflow/python/__init__.py", line 63, in <module>
    from tensorflow.python.framework.framework_lib import *  # pylint: disable=redefined-builtin
  File "/private/var/tmp/_bazel_yangyan-ling/2ce5cc8600b6d4faf46244230a6eedc1/sandbox/darwin-sandbox/5695/execroot/org_tensorflow/bazel-out/host/bin/tensorflow/tools/api/generator/create_python_api.runfiles/org_tensorflow/tensorflow/python/framework/framework_lib.py", line 52, in <module>
    from tensorflow.python.framework.importer import import_graph_def
  File "/private/var/tmp/_bazel_yangyan-ling/2ce5cc8600b6d4faf46244230a6eedc1/sandbox/darwin-sandbox/5695/execroot/org_tensorflow/bazel-out/host/bin/tensorflow/tools/api/generator/create_python_api.runfiles/org_tensorflow/tensorflow/python/framework/importer.py", line 27, in <module>
    from tensorflow.python.framework import function
  File "/private/var/tmp/_bazel_yangyan-ling/2ce5cc8600b6d4faf46244230a6eedc1/sandbox/darwin-sandbox/5695/execroot/org_tensorflow/bazel-out/host/bin/tensorflow/tools/api/generator/create_python_api.runfiles/org_tensorflow/tensorflow/python/framework/function.py", line 37, in <module>
    from tensorflow.python.ops import variable_scope as vs
  File "/private/var/tmp/_bazel_yangyan-ling/2ce5cc8600b6d4faf46244230a6eedc1/sandbox/darwin-sandbox/5695/execroot/org_tensorflow/bazel-out/host/bin/tensorflow/tools/api/generator/create_python_api.runfiles/org_tensorflow/tensorflow/python/ops/variable_scope.py", line 24, in <module>
    import enum  # pylint: disable=g-bad-import-order
ImportError: No module named enum
Target //tensorflow/tools/pip_package:build_pip_package failed to build
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 3067.684s, Critical Path: 183.55s, Remote (0.00% of the time): [queue: 0.00%, setup: 0.00%, process: 0.00%]
INFO: 5694 processes: 5691 darwin-sandbox, 3 local.
FAILED: Build did NOT complete successfully


$ pip install enum34
$ pip uninstall enum


參考
https://github.com/tensorflow/serving/issues/893