message: Add documentation of how to debug test failures.
diff: @@ -110,6 +110,9 @@ tf_cc_binary(
  # using it. This only tests that the headers containing the hex dump of the
  # generated GPU binaries are built successfully, but this is better than
  # nothing.
  +# If this test fails, use the build flag --verbose_failures to see a full
  +# command line of the failing build command, then copy the command line and run
  +# it for further debugging.
  tf_cc_test(
  name = "tf_to_gpu_binary_test",
  srcs = [],
  