Flag --incompatible_disable_depset_items will break Bazel Codelabs in a future Bazel release

[bazel-flag-bot]

Incompatible flag --incompatible_disable_depset_items will be enabled by default in a future Bazel release [1], thus breaking Bazel Codelabs.

The flag is documented here: https://github.com/bazelbuild/bazel/issues/9017

Please check the following CI builds for build and test results:

• Ubuntu 16.04, OpenJDK 8
• macOS, OpenJDK 8
• Ubuntu 18.04, OpenJDK 11

Never heard of incompatible flags before? We have documentation that explains everything.

If you don't want to receive any future issues for Bazel Codelabs or if you have any questions, please file an issue in https://github.com/bazelbuild/continuous-integration

Important: Please do NOT modify the issue title since that might break our tools.

[1] The target release hasn't been determined yet. Our tool will update the issue title once the flag flip has been scheduled.