I did not touch the ~/.lein/profiles.clj file.
I got things to work by removing everything related to Timbre. I would
guess that I had some kind of naming class between Timbre and
clojure.tools.logging. I decided to just use clojure.tools.logging, and
that seems to have fixed the problem.
Did you change your ~/.lein/profiles.clj file? That’s the most common cause of
mysterious startup failures with Leiningen it seems. Try removing/renaming that
file and see if your problems go away.
If you have more of the stacktrace to share (via pastebin or a gist etc), that
might help folks
