その名前でｸﾞｸﾞるとこんなのヒットするから名前が変わったんじゃね
中身見たことないから名前以外に変更あってもわからんけども
https://blog.torproject.org/blog/tor-02510-released-and-tor-023x-deprecated
＞Remove migration code from when we renamed the "cached-routers" file to "cached-descriptors" back in 0.2.0.8-alpha. This incidentally resolves ticket 6502 by cleaning up the related code a bit. Patch from Akshay Hebbar.