After gem update --system, when I do something related to rubygems, I receive this message:
NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01.
Gem::Specification#default_executable= called from /usr/lib/ruby/gems/1.8/specifications/rubygems-update-1.7.2.gemspec:11.
How can I avoid it? I’ve tried to remove rubygems and reinstall, but that didn’t fix it.
You probably need to regenerate your gem specifications.
http://blog.segment7.net/2011/05/05/rubygems-1-8-1