Currently the message says:
Savepoint not established. Implicit commit might have occured.
That message is not saying what is wrong to the users.
A message like:

Unable to perform automatic rollback after procedure: my_demo_test_package.cleanup
An implicit or explicit commit/rollback occurred.
Use the %rollback(manual) annotation or remove commits/rollback/ddl statements that are causing the issue.

To be able to point to a point, where rollback was to be performed, we need to pass the ut_executable to rollback_to_savepoint procedure.