Workaround for (presumably) race in TestReport On SWING CI, sometimes when test times out, the whole test run crashes on DNU as `outcome` instvar is nil. This is maybe because of some race. As a quick and dirty workaround, create a new one if outcome is nil. Proper solution is to revise the code and figure out what's wrong, indeed. This is left as future work.

../../../projects/smalltalk/stx -I --noBanner  -f report-runner.st -D /tmp -r Builder::TestReport -p exept:regression