Information concerning available builds is outdated. We need information there and may be in a readme.txt on <http://dev-builds.libreoffice.org/daily/> for what the different builds can be used. I'm afraid it's not part of general education what can be awaited from "W2008R2@20-With-Symbol-Bytemark-Hosting/" ;-) Please add to CC other tinderbox maintainers who might be able to add information!
See: https://wiki.documentfoundation.org/Development/Tinderbox