Update to Ruby 2.5.0 appears to break vagrant provision

[northerner]

The update to Ruby 2.5.0 (#6097) appears to have broken the vagrant provision at the point it starts to download gem dependencies.

Have attempted to provision vagrant box from scratch with preceding commit (b1e0319) and it works fine.

default: ruby-2.5.0 - #validate archive
    default: ruby-2.5.0 - #extract
    default: ruby-2.5.0 - #validate binary
    default: ruby-2.5.0 - #setup
    default: ruby-2.5.0 - #gemset created /home/vagrant/.rvm/gems/ruby-2.5.0@global
    default: ruby-2.5.0 - #importing gemset /home/vagrant/.rvm/gemsets/global.gems
    default: there was an error installing gem rubygems-bundler
    default: ....................................
    default: ruby-2.5.0 - #generating global wrappers
    default: ........
    default: Error running 'run_gem_wrappers_regenerate',
    default: please read /home/vagrant/.rvm/log/1517359029_ruby-2.5.0/gemset.wrappers.global.log
    default: ruby-2.5.0 - #gemset created /home/vagrant/.rvm/gems/ruby-2.5.0
    default: ruby-2.5.0 - #importing gemsetfile /home/vagrant/.rvm/gemsets/default.gems evaluated to empty gem list
    default: ruby-2.5.0 - #generating default wrappers
    default: ........
    default: Error running 'run_gem_wrappers_regenerate',
    default: please read /home/vagrant/.rvm/log/1517359029_ruby-2.5.0/gemset.wrappers.default.log
    default: Creating alias default for ruby-2.5.0
    default: ...
    default:   * To start using RVM you need to run `source /home/vagrant/.rvm/scripts/rvm`
    default:     in all your open shell windows, in rare cases you need to reopen all shell windows.
    default: Already installed ruby-2.5.0.
    default: To reinstall use:
    default:     rvm reinstall ruby-2.5.0
    default: /home/vagrant/.rvm/scripts/override_gem: /home/vagrant/.rvm/rubies/ruby-2.5.0/bin/gem: /home/travis/.rvm/rubies/ruby-2.5.0/bin/ruby: bad interpreter: No such file or directory
    default: /tmp/vagrant-shell: /home/vagrant/.rvm/rubies/ruby-2.5.0/bin/bundle: /home/travis/.rvm/rubies/ruby-2.5.0/bin/ruby: bad interpreter: No such file or directory

When running vagrant ssh -c "cd /vagrant && foreman start" after failed provision error bash: foreman: command not found is returned.

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• I searched or browsed the repo’s other issues to ensure this is not a duplicate.
• This bug happens on a tagged release and not on master (If you're a user, don't worry about this).