Let's see: Test::Unit needs development help, you need Test::Unit... sounds like a match made in heaven! :-) (Isn't this how modules survive past their originators?)
That's not a bad idea, though I know nothing about how one goes about taking over what has obviously become an abandoned project. Furthermore, while I'd personally say that two years without any development constitutes an abandoned project, that doesn't necessarily mean that they will agree. :-)