Mike Bland

Progress! I'm down to only these tests failing on macOS and Windows: [macOS shard 2](https://buildkite.com/bazel/bazel-bazel-github-presubmit/builds/30260#019aa3cc-ff75-44c0-baf8-964cd5714fe1/784-10546) ```sh //src/test/shell/bazel:bazel_example_test //src/test/shell/bazel:bazel_proto_library_test # passed, but timed out //src/test/cpp:option_processor_test //src/test/shell/bazel:bazel_coverage_java_jdk11_toolchain_head_test //src/test/shell/bazel/remote:remote_execution_test ``` [macOS shard 3](https://buildkite.com/bazel/bazel-bazel-github-presubmit/builds/30260#019aa3cc-ff76-47ac-a9bb-6c3f0a525aa9/785-6555)...

@meteorcloudy Modulo the last macOS test timeouts I'm squashing, I've got all the CI builds passing. The pull request has become a beast, so I can split it up or...

Filed scala/scala#11192.