/usr/lib/ruby/vendor_ruby/ is in ruby-influxdb 0.2.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/influxdb.rb
/usr/lib/ruby/vendor_ruby/influxdb/
/usr/lib/ruby/vendor_ruby/influxdb/version.rb
/usr/lib/ruby/vendor_ruby/influxdb/point_value.rb
/usr/lib/ruby/vendor_ruby/influxdb/errors.rb
/usr/lib/ruby/vendor_ruby/influxdb/max_queue.rb
/usr/lib/ruby/vendor_ruby/influxdb/client/
/usr/lib/ruby/vendor_ruby/influxdb/client/http.rb
/usr/lib/ruby/vendor_ruby/influxdb/client.rb
/usr/lib/ruby/vendor_ruby/influxdb/writer/
/usr/lib/ruby/vendor_ruby/influxdb/writer/async.rb
/usr/lib/ruby/vendor_ruby/influxdb/writer/udp.rb
/usr/lib/ruby/vendor_ruby/influxdb/config.rb
/usr/lib/ruby/vendor_ruby/influxdb/logging.rb
/usr/lib/ruby/vendor_ruby/influxdb/query/
/usr/lib/ruby/vendor_ruby/influxdb/query/cluster.rb
/usr/lib/ruby/vendor_ruby/influxdb/query/core.rb
/usr/lib/ruby/vendor_ruby/influxdb/query/retention_policy.rb
/usr/lib/ruby/vendor_ruby/influxdb/query/continuous_query.rb
/usr/lib/ruby/vendor_ruby/influxdb/query/database.rb
/usr/lib/ruby/vendor_ruby/influxdb/query/user.rb