[root@localhost one]$ thin install
Unable to load the EventMachine C extension; To use the pure-ruby reactor, require 'em/pure_ruby'
/usr/local/rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require': /usr/lib64/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by /usr/local/rvm/gems/ruby-2.4.0@one/gems/eventmachine-1.2.3/lib/rubyeventmachine.so) - /usr/local/rvm/gems/ruby-2.4.0@one/gems/eventmachine-1.2.3/lib/rubyeventmachine.so (LoadError)
from /usr/local/rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/rvm/gems/ruby-2.4.0@one/gems/eventmachine-1.2.3/lib/eventmachine.rb:8:in `<top (required)>'
from /usr/local/rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/rvm/gems/ruby-2.4.0@one/gems/thin-1.7.0/lib/thin.rb:7:in `<top (required)>'
from /usr/local/rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/rvm/rubies/ruby-2.4.0/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/rvm/gems/ruby-2.4.0@one/gems/thin-1.7.0/bin/thin:5:in `<top (required)>'
from /usr/local/rvm/gems/ruby-2.4.0@one/bin/thin:22:in `load'
from /usr/local/rvm/gems/ruby-2.4.0@one/bin/thin:22:in `<main>'
from /usr/local/rvm/gems/ruby-2.4.0@one/bin/ruby_executable_hooks:15:in `eval'
from /usr/local/rvm/gems/ruby-2.4.0@one/bin/ruby_executable_hooks:15:in `<main>'