pkg-fallout: duplicate symbols?

[Christian Weisgerber]

I'm currently receiving pkg-fallout mail that some of the ports I
maintain are failing to build with "duplicate symbol" errors.

It is unclear to me whether these are actual problems I need to
take care of, or just some kind of screw-up on the package build
server.  This part of each message doesn't inspire confidence:

!!! Jail is newer than host. (Jail: 1300110, Host: 1300100) !!!
!!! This is not supported. !!!
!!! Host kernel must be same or newer than jail. !!!
!!! Expect build failures. !!!

Can somebody clarify what's going on?

-- 
Christian "naddy" Weisgerber                          naddy at mips.inka.de