See the complaint on #4039. This doesn't fix that particular
issue (it's somewhat unrelated), but does solve around
a file parsing problem reported by @void-in
msftidy is complaining, here:
keylog_recorder.rb:116 - [WARNING] File.open without binary mode
Not sure how this managed to hit upstream/master with msftidy warnings.
Protip, use an msftidy pre-commit hook. We have just such a hook script
in tools/dev, as a matter of fact, so it's just a symlink away:
https://github.com/rapid7/metasploit-framework/blob/master/tools/dev/pre-commit-hook.rb