I forgot to stub out the call to check to ensure that the ports were available, so this test can fail if something is listening on 8000 or 8443, e.g.:
Created attachment 182905 [details]
Comment on attachment 182905 [details]
Clearing flags on attachment: 182905
Committed r139827: <http://trac.webkit.org/changeset/139827>
All reviewed patches have been landed. Closing bug.