ってScout gemずいぶんバージョンアップしてるじゃないのよもー
https://github.com/scoutapp/scout_apm_ruby
github.comGitHub - scoutapp/scout_apm_ruby: ScoutAPM Ruby Agent. Supports Rails, Sinatra, Grape, Rack, and many other frameworksScoutAPM Ruby Agent. Supports Rails, Sinatra, Grape, Rack, and many other frameworks - GitHub - scoutapp/scout_apm_ruby: ScoutAPM Ruby Agent. Supports Rails, Sinatra, Grape, Rack, and many other fr...