Why is FreeBSD-HEAD disabled in Jenkins?

[Ngie Cooper]

Hi all,
    While trying to root-cause a segfault or two in a recent copy of
CURRENT, I noticed that the FreeBSD_HEAD Jenkins job (
https://jenkins.freebsd.org/job/FreeBSD_HEAD/ ) has been disabled for
a month. Is there a particular reason for that--other than the kyua
segfault flapping issue, which should no longer be an issue because
kyua has been downgraded from 0.12 to 0.11?
Thanks,
-Ngie