/usr/lib/ruby/vendor_ruby/ is in ruby-faraday-middleware 0.10.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/faraday_middleware/
/usr/lib/ruby/vendor_ruby/faraday_middleware/rack_compatible.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/instrumentation.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/request/
/usr/lib/ruby/vendor_ruby/faraday_middleware/request/oauth2.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/request/method_override.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/request/encode_json.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/request/oauth.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/backwards_compatibility.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/addressable_patch.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/parse_yaml.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/parse_json.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/parse_marshal.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/follow_redirects.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/rashify.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/chunked.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/mashify.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/parse_xml.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/caching.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response/parse_dates.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/gzip.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/version.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware/response_middleware.rb
/usr/lib/ruby/vendor_ruby/faraday_middleware.rb