The GEM_PATH environmental variable is not getting set correctly on master nodes. On slave nodes, it works just fine.

Here is a sample of how it looks:

GEM_PATH: "file:/var/lib/jenkins/jenkins-data/plugins/ruby-runtime/WEB-INF/lib/stapler-jruby-1.177.jar!/gem"

Here is an example of how I expect it to render:

GEM_PATH: "/var/lib/jenkins/.rvm/gems/ree-1.8.7-2012.02rn:/var/lib/jenkins/.rvm/gems/ree-1.8.7-2012.02@global"

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Disabling the envinject plugin renders the GEM_PATH environmental variable correctly.

Also, we can use the plugin to override the GEM_PATH manually, but this is not ideal. We should be able to render this environmental variable via rvm.