Can't configure logger in ExUnit tests run with Mix, in Elixir 1.11

Thanks for confirming that Logger.configure(level: :warning) works.

That worked for me too, but in the end I changed my test setup to not rely on --no-start. (Actually, it turns out that since I adopted that flag something else has changed and now it’s not required anymore. I need to investigate that more.)

It still seems odd that this would change between Elixir 1.10 and 1.11.