The logger fallback implementation seems to fail when using a non STDOUT or STDERR location in cold boot outside of the handler. I believe this is because the orig_initialize misses that the first 3 parameters are normal, but the remaining are named.

https://github.com/ruby/logger/blob/afe0da71087d721de7107f6bee7631b8b71a2471/lib/logger.rb#L380-L382

You end up with an error like the one described in this issue - airbrake/airbrake-ruby#630

Raising this here, as I know this occurs within the Lambda environment on Ruby 2.7.