Basically, this started failing for me on my personal tap because there are some methods defined at the top-level in my Rakefile. That seems acceptable to me and since we're already ignoring all other Ruby files in the tap I figured we might as well just ignore all of them. I ended up changing one other use of `Taps/**/*.rb` to `Taps/**/*.rb` as well.
Library
This directory contains all the code run by the official brew command in Homebrew and all formulae (package descriptions) in taps (repositories containing formulae) in Taps subdirectories.