While creating a development environment for a Ruby project earlier I ran into an error installing some of the gems required by the project. I realized that I had installed an older version of RubyGems which was causing problems with some of the gem dependents that needed to be installed. Below I list one of the examples of the errors I was running into and how I resolved the issue.
Earlier when attempting to use request-log-analyzer on a new server I had just installed it on I got the error stated below. There are numerous updates to the gems I was using to fulfill all of the requirements of the request-log-analyzer gem. I went through and updated many of the gems until I ran into an issue with the hoe gem that required an update to rubygems. Once I upgraded rubygems everything worked properly without throwing any errors. I probably could have simply updated rubygems and things would have worked fine without upgrading all of the other gems it was complaining about.
Earlier when attempting to install the request-log-analyzer gem on a CentOS Linux server I ran into some issues. I noticed that on one server I was able to install the request-log-analyzer gem without issue but on another server running the same version of CentOS and Ruby as the first server the attempt to install request-log-analyzer returned an error. The error was that the gem required a newer version of another gem.