@Chris Konsur​ :

The error message suggests that there is an issue with the standard output buffer when the Python interpreter is shutting down, which could be related to daemon threads. This error is not specific to Databricks or Azure ADO pipeline, and it may be caused by some code running in your notebook or test environment.

One possible solution is to use a different approach for capturing and reporting the test results. Instead of relying on the standard output, you can use a test runner framework such as pytest or unittest to run the tests and generate a report that can be easily consumed by the pipeline. These frameworks also provide additional features such as test discovery, test fixtures, and test parameterization.

Please let me know if this helps you, else we can think of more options.