Bazel: TensorFlow java library doesn't build with Bazel 0.23.2

[meteorcloudy]

To reproduce:

git clone https://github.com/tensorflow/tensorflow.git
cd tensorflow
yes "" | ./configure
bazel build --config=opt tensorflow/java:tensorflow

You'll get the following error message:

ERROR: /usr/local/google/home/pcloudy/workspace/tensorflow/tensorflow/java/BUILD:20:1: Building tensorflow/java/libtensorflow.jar (27 source files, 1 source jar) and running annotation processors (OperatorProcessor) failed (Exit 1)
warning: Supported source version 'RELEASE_5' from annotation processor 'org.tensorflow.processor.OperatorProcessor' less than -source '1.7'
error: warnings found and -Werror specified
Target //tensorflow/java:tensorflow failed to build

Bazel 0.19.2 is able to build the same target.

@cushon @iirina

[meteorcloudy]

This is blocking TensorFlow from migrating to Bazel 0.23.2

[meteorcloudy]

This also happens on mac: https://paste.googleplex.com/5258293977022464

[cushon]

I mailed a fix: https://github.com/tensorflow/tensorflow/pull/26949

[meteorcloudy]

Wonderful! Thank you so much!