I'm trying to install a ruby, but I can't proceed because of the error below...crying

/System/Library/Frameworks/Ruby.Frameworks/Versions/2.0/usr/lib/ruby/2.0.0/universal-darwin15/rbconfig.rb:213: Warning: Insecure world writable dir/Users/guest/tomcat in this way, what is this...?crying Please give me an answer me.!