CI infrastructure failing: Outerloop Tests

The scheduled workflow [`tests-outerloop.yml`](../../actions/workflows/tests-outerloop.yml) (**Outerloop Tests**) is failing for an infrastructure reason (build/setup, or no test results were produced).

Filed automatically by the specialized-test failure reporter. Each failed run
is added as a comment below; close this issue once the underlying problem is
fixed.
See [docs/ci/specialized-test-failure-issues.md](../../blob/main/docs/ci/specialized-test-failure-issues.md).

Start with the scheduled .github workflow tests-outerloop.yml and review its failed runs for the infrastructure or missing-test-results cause. Read docs/ci/specialized-test-failure-issues.md for the reporter's workflow and close the issue once the underlying problem is fixed.

Written by the indexing model from the issue text.