/usr/lib/ is in ruby-cucumber-core 1.5.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/cucumber/
/usr/lib/ruby/vendor_ruby/cucumber/core/
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/background.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/comment.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/data_table.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/describes_itself.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/doc_string.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/empty_background.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/empty_multiline_argument.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/examples_table.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/feature.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/location.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/names.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/outline_step.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/scenario.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/scenario_outline.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/step.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast/tag.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/ast.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/compiler.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/filter.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/ast_builder.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/document.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/parser.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/tag_expression.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/writer/
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/writer/helpers.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/gherkin/writer.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/platform.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/report/
/usr/lib/ruby/vendor_ruby/cucumber/core/report/summary.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/
/usr/lib/ruby/vendor_ruby/cucumber/core/test/action.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/around_hook.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/case.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/filters/
/usr/lib/ruby/vendor_ruby/cucumber/core/test/filters/activate_steps_for_self_test.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/filters/locations_filter.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/filters/name_filter.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/filters/tag_filter.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/filters.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/result.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/runner.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/step.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/test/timer.rb
/usr/lib/ruby/vendor_ruby/cucumber/core/version.rb
/usr/lib/ruby/vendor_ruby/cucumber/core.rb