/usr/lib/ruby/vendor_ruby/ is in ruby-gitlab 4.2.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/gitlab/
/usr/lib/ruby/vendor_ruby/gitlab.rb
/usr/lib/ruby/vendor_ruby/gitlab/api.rb
/usr/lib/ruby/vendor_ruby/gitlab/cli.rb
/usr/lib/ruby/vendor_ruby/gitlab/cli_helpers.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/
/usr/lib/ruby/vendor_ruby/gitlab/client.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/award_emojis.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/boards.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/branches.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/build_variables.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/builds.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/commits.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/environments.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/groups.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/issues.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/jobs.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/keys.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/labels.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/merge_requests.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/milestones.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/namespaces.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/notes.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/pipeline_triggers.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/pipelines.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/projects.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/repositories.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/repository_files.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/runners.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/services.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/snippets.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/system_hooks.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/tags.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/todos.rb
/usr/lib/ruby/vendor_ruby/gitlab/client/users.rb
/usr/lib/ruby/vendor_ruby/gitlab/configuration.rb
/usr/lib/ruby/vendor_ruby/gitlab/error.rb
/usr/lib/ruby/vendor_ruby/gitlab/file_response.rb
/usr/lib/ruby/vendor_ruby/gitlab/help.rb
/usr/lib/ruby/vendor_ruby/gitlab/objectified_hash.rb
/usr/lib/ruby/vendor_ruby/gitlab/page_links.rb
/usr/lib/ruby/vendor_ruby/gitlab/paginated_response.rb
/usr/lib/ruby/vendor_ruby/gitlab/request.rb
/usr/lib/ruby/vendor_ruby/gitlab/shell.rb
/usr/lib/ruby/vendor_ruby/gitlab/shell_history.rb
/usr/lib/ruby/vendor_ruby/gitlab/version.rb