I have a ruby console application. When I check it in irb on my dev machine, it logs ok. But when I run it in VM ruby logger loses formatting, i.e. it logs only message, without date and severity. Now this is solved by setting formatting with `Logger.formatter = proc { |severity, datetime, progname, msg| ...}`. But I'm curious as to why that could happen? I googled and found rather old info that this could happen in Rails application. Is this a known issue? It took me some time to debug this.