/usr/lib/ruby/vendor_ruby/ is in chef-zero 2.0.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/chef_zero/
/usr/lib/ruby/vendor_ruby/chef_zero/rest_base.rb
/usr/lib/ruby/vendor_ruby/chef_zero/rest_request.rb
/usr/lib/ruby/vendor_ruby/chef_zero/rest_router.rb
/usr/lib/ruby/vendor_ruby/chef_zero/data_store/
/usr/lib/ruby/vendor_ruby/chef_zero/data_store/memory_store.rb
/usr/lib/ruby/vendor_ruby/chef_zero/data_store/data_error.rb
/usr/lib/ruby/vendor_ruby/chef_zero/data_store/data_already_exists_error.rb
/usr/lib/ruby/vendor_ruby/chef_zero/data_store/data_not_found_error.rb
/usr/lib/ruby/vendor_ruby/chef_zero/rest_error_response.rb
/usr/lib/ruby/vendor_ruby/chef_zero/server.rb
/usr/lib/ruby/vendor_ruby/chef_zero/version.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/
/usr/lib/ruby/vendor_ruby/chef_zero/solr/solr_parser.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/solr_doc.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/binary_operator.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/subquery.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/regexpable_query.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/phrase.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/term.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/unary_operator.rb
/usr/lib/ruby/vendor_ruby/chef_zero/solr/query/range_query.rb
/usr/lib/ruby/vendor_ruby/chef_zero/cookbook_data.rb
/usr/lib/ruby/vendor_ruby/chef_zero/rspec.rb
/usr/lib/ruby/vendor_ruby/chef_zero/data_normalizer.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/cookbooks_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/node_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/data_bag_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/environment_role_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/sandboxes_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/principal_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/role_environments_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/role_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/environment_nodes_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/file_store_file_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/environment_cookbooks_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/cookbook_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/environment_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/data_bags_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/actors_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/data_bag_item_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/actor_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/environment_recipes_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/environment_cookbook_versions_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/rest_list_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/search_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/cookbooks_base.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/sandbox_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/cookbook_version_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/environment_cookbook_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/searches_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/authenticate_user_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/not_found_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/endpoints/rest_object_endpoint.rb
/usr/lib/ruby/vendor_ruby/chef_zero/log.rb
/usr/lib/ruby/vendor_ruby/chef_zero.rb