[rubygems/rubygems] [rebuild_command] Bail early if the RubyGems version doesn't match.
https://github.com/rubygems/rubygems/commit/a691170dc7
[rubygems/rubygems] [rebuild_command] Bail early if the RubyGems version doesn't match.
https://github.com/rubygems/rubygems/commit/a691170dc7