I've just seen a message that ended in "tested on sparc64 with rthreads@".
That's normal. rthreads are now default in -current. If you're testing ports on an older system without rthreads, well, your test is worthless... Part of the switch of rthreads is test, test, test, so that it stays on, and so that 5.2 will be able to ship with rthreads...