Invalid gemspec in [/Users/donbulinux/.rvm/gems/ruby-1.9.2-p180/specifications/execjs-1.2.4.gemspec]: invalid date format in specification: "2011-08-03 00:00:00.000000000Z" Invalid gemspec in [/Users/donbulinux/.rvm/gems/ruby-1.9.2-p180/sp…