RVM is maintained by community of volunteers, report issues to RVM issues tracker.
If you can help or wish to become one of the maintainers - just start helping. You can find more RVM related projects at RVM Github organization.
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Testing with RVM

RVM allows you to run tests across multiple ruby versions:

~/projects/ruby/coulda [git:master] $ rvm 2.0.0,2.1.1 do rake test

Visit sets do for more information on invoking rvm do.