What happened here is that the runit-void-20150127_1 update removed the 
files from /etc/runit/runsvdir/{default,single}
(agetty-ttyX) and the configuration of the package remade the symlinks.

But if for some reason xbps didn't complete the update fast enough to 
configure the runit-void package, most likely your
agetty process was killed and those packages in the transaction were not 
configured.

`xbps-query -l` will list packages in "uu" state if they need to be 
configured with `xbps-reconfigure -a`.

I believe this won't happen anymore, but it's a design feature of runit and 
xbps. Not sure what I can do about this...

HTH