No coverage files when running a build with --remote_download_minimal or --remote_download_toplevel

[arjantop-cai]

Description of the problem / feature request:

I am not sure if this is the desired behavior (especially for minimal) or a bug.

Running bazel coverage (with 100% cache hit rate) and --remote_download_minimal does not download coverage files. Configured --coverage_report_generator logs are visible in the output but it seems like the generator is not actually run.
As a result no output coverage file is produced and there are no coverage files present in the test output.

Sample output of configured --coverage_report_generator, ran today (December 1st) but logs are from November 27th (from cache):

{"level":"info","ts":1606483666.4905822,"caller":"coverage/coverage.go:48","msg":"Collecting coverage","path":"bazel-out/k8-fastbuild-ST-fcb5cf22ec9a/testlogs/foo/bar/go_default_test/coverage.dat"}

Google Cloud storage is used as a remote cache (if this could have any impact).

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

Run bazel coverage where the cache hit is 100%, coverage files are not downloaded.

What operating system are you running Bazel on?

MacOS Catalina 10.15.7

What's the output of bazel info release?

release 3.6.0

[github-actions]

Thank you for contributing to the Bazel repository! This issue has been marked as stale since it has not had any activity in the last 2+ years. It will be closed in the next 14 days unless any other activity occurs or one of the following labels is added: "not stale", "awaiting-bazeler". Please reach out to the triage team (@bazelbuild/triage) if you think this issue is still relevant or you are interested in getting the issue resolved.

[coeuvre]

Should be fixed by #16556.