Kristopher, thanks for your blog post.
When using Mac OSX 10.11 El Capitan as the server, the directory structure changed a bit.
The build is ran from the directory /var/_xcsbuildd/, so instead of linking to /var/teamsserver/Library/SDKs, just link to /var/_xcsbuildd/Library/SDKs:
sudo ln -s ~/Library/SDKs /var/_xcsbuildd/Library/SDKs
Do not forget to check that the full path to the .framework directory is accessible by all the users (your home directory, your library directory, etc).