`

undefined local variable or method `version_requirements'

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undefined local variable or method `version_requirements' for #<Rails::GemDependency:0x1022cc1c8> (NameError)



uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)



$ gem install rubygems-update -v='1.4.2'
$ gem uninstall rubygems-update -v='1.5.0'
$ update_rubygems

gem update --system=1.4.2
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