Nose is unmaintained

[QuLogic]

Nose is dead, and has been dead for years. Its repository hasn't seen a commit in nearly 4 years. For example, it will likely not work with Python 3.9 nose-devs/nose#1099

Probably best to move off it to something like pytest. Fortunately, pytest does not really require any changes to code, but you do get some advantages if you do move, like test parameterization.

[sjsrey]

We moved to pytest with a5ecd27