Why do I get a bcrypt-ruby gem install error?

Question

Getting an error when trying to install the gem devise, the installation is stopping on the gem bcrypt-ruby:

$ gem install bcrypt-ruby
Error installing bcry         


        

Answer 1

You only need use rvm (ruby version manager)

rvm uninstall 1.9.3

and then

rvm install 1.9.3

looks this error is on build of rvm 1.9.3, but uninstall and reinstalling fix the problem with bcrypt-ruby 3.0.1