Merge pull request #4508 from RosettaCommons/roccomoretti/more_diagnostics_for_venv_tests
Save diagnostic information for VirtualEnv-using integration tests.
We're seeing some issues with drrafter_setup_real_test_H_no_init in the ubsan tests. It looks like the issue is happening during the VirtualEnv setup. Attempt to save the logging/error information from the virtual env setup steps. (But don't diff on it.)