/usr/lib/ruby/ is in ruby-sidekiq-limit-fetch 3.4.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/sidekiq/
/usr/lib/ruby/vendor_ruby/sidekiq/extensions/
/usr/lib/ruby/vendor_ruby/sidekiq/extensions/manager.rb
/usr/lib/ruby/vendor_ruby/sidekiq/extensions/queue.rb
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/global/
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/global/monitor.rb
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/global/selector.rb
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/global/semaphore.rb
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/instances.rb
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/queues.rb
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch/unit_of_work.rb
/usr/lib/ruby/vendor_ruby/sidekiq/limit_fetch.rb
/usr/lib/ruby/vendor_ruby/sidekiq-limit_fetch.rb