A problem about executing project tasks in specific gemset is still appears. It is described here https://github.com/jenkinsci/rake-plugin/pull/4

I installed rvm as its website instructs under /var/lib/jenkins (the default home directory of jenkins) and from configure I specified the rvm's home directory
After it I selected the gemset what I created for the specific project for all two rake tasks.
but under building, Jenkins builds project to global gemset, not the selected gemset.

Actual log output:
[rhcp] $ /var/lib/jenkins/.rvm/gems/ruby-1.9.3-p0@global/bin/rake --rakefile ./Rakefile.bootstrap bundler:install

Expected log output:
[rhcp] $ /var/lib/jenkins/.rvm/gems/ruby-1.9.3-p0@rhcp/bin/rake --rakefile ./Rakefile.bootstrap bundler:install

It not just uses wrong rake, but it seems do not uses the selected (currently: rhcp) gemset.