build_message

# File lib/rubygems/errors.rb, line 60
    def build_message
      if name == "bundler" && message = Gem::BundlerVersionFinder.missing_version_message
        return message
      end
      names = specs.map(&:full_name)
      "Could not find '#{name}' (#{requirement}) - did find: [#{names.join ','}]\n"
    end