bazel run --script_path=test fails silently when target uses shard_count

[jfirebaugh]

Description of the bug:

When you run bazel run --script_path=test <target> and the target is a test target that uses shard_count, Bazel exits with status code 2 with no indication of why.

The expected behavior is either that it succeeds (preferred) or that Bazel prints a diagnostic that explains that --script_path cannot be used on targets that use shard_count. In the latter case, this limitation should also be mentioned in the documentation for --script_path.

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

Minimal example: https://github.com/jfirebaugh/bazel_cc_test_output/tree/script_path

Which operating system are you running Bazel on?

macOS

What is the output of bazel info release?

release 5.3.0

If bazel info release returns development version or (@non-git), tell us how you built Bazel.

No response

What's the output of git remote get-url origin; git rev-parse master; git rev-parse HEAD ?

No response

Have you found anything relevant by searching the web?

No response

Any other information, logs, or outputs that you want to share?

No response