rubygems.org において、 yanked な gem とは？ bootstrap-sass < `yanked` () gem install ### rubygems yanked gem version

(push)gem
()

Policy change about gem yank

> “Yanking” a gem was introduced as a way to remove a gem from the RubyGems.org index, usually because of an accidental gem push or someone wanting to allow others to take over the gem’s name.