These are a bunch of tests that you have to look at the output for. They are not included in a normal run. To run these tests use the following command:
gut -gconfig= -gdir test/output_tests
gut -gconfig= -gdir test/output_tests -gexit -gignore_pause
gut -gconfig= -gdir test/output_tests -gexit -gignore_pause -gselect test_bugs