I wonder what you mean by FOSS compatible? Copyright by default is rather restrictive; to make something free, you must explicitly grant these freedoms. A warranty disclaimer does not grant people the freedom to copy, modify, sell, redistribute, etc.
"bah, I need to fix that"
https://twitter.com/ErrataRob/status/399979105854058497
EDIT: And he pushed a LICENSE file just now.
"I provide this code with no warrantee whatsoever. But hey, if you want to take the risk and run it, go for it."