So here I'm trying to figure out what these Rooster modules are, so I started looking at the code. It didn't take too long to figure out.

Rooster roost·er   Pronunciation Key  (rstr)
n.
         1. An adult male chicken.
         2. An adult male of other birds.
   3. A person regarded as cocky or pugnacious.


roster ros·ter  Pronunciation Key  (rstr, rôstr)
n.

   1. A list, especially of names.
   2. A list of the names of military officers and enlisted personnel enrolled in a particular unit.

Slightly related to the author being German i suspect

I'll put it on my list for spelling issues to be fixed.