/usr/lib/ruby/vendor_ruby/sequel/plugins/ is in ruby-sequel 4.15.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/sequel/plugins/active_model.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/after_initialize.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/association_autoreloading.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/association_dependencies.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/association_pks.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/association_proxies.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/auto_validations.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/blacklist_security.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/boolean_readers.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/caching.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/class_table_inheritance.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/column_select.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/composition.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/constraint_validations.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/dataset_associations.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/defaults_setter.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/dirty.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/eager_each.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/error_splitter.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/force_encoding.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/hook_class_methods.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/input_transformer.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/insert_returning_select.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/instance_filters.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/instance_hooks.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/json_serializer.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/lazy_attributes.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/list.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/many_through_many.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/many_to_one_pk_lookup.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/modification_detection.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/mssql_optimistic_locking.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/nested_attributes.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/optimistic_locking.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/pg_array_associations.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/pg_row.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/pg_typecast_on_load.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/prepared_statements.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/prepared_statements_associations.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/prepared_statements_safe.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/prepared_statements_with_pk.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/rcte_tree.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/schema.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/scissors.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/serialization.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/serialization_modification_detection.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/sharding.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/single_table_inheritance.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/skip_create_refresh.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/split_values.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/static_cache.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/string_stripper.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/subclasses.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/table_select.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/tactical_eager_loading.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/timestamps.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/touch.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/tree.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/typecast_on_load.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/unlimited_update.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/update_or_create.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/update_primary_key.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/validation_class_methods.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/validation_helpers.rb
/usr/lib/ruby/vendor_ruby/sequel/plugins/xml_serializer.rb