Sorry I can't cut and paste the output, I've closed the window already.
not a bug (TM).
Then the fact that it looks like a bug, is a bug.
the portage people know about it already, and while they have chided me for using dynamic slots indirectly via has_version(), they are working on dynamic slots for a future version of portage.
*** Bug 90264 has been marked as a duplicate of this bug. ***