/usr/lib/ is in ruby-eim-xml 0.0.4-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/eim_xml.rb
/usr/lib/ruby/vendor_ruby/eim_xml/
/usr/lib/ruby/vendor_ruby/eim_xml/dsl.rb
/usr/lib/ruby/vendor_ruby/eim_xml/formatter.rb
/usr/lib/ruby/vendor_ruby/eim_xml/xhtml.rb
/usr/lib/ruby/vendor_ruby/eim_xml/matcher.rb
/usr/lib/ruby/vendor_ruby/eim_xml/parser.rb
/usr/lib/ruby/vendor_ruby/eim_xml/xhtml/
/usr/lib/ruby/vendor_ruby/eim_xml/xhtml/dsl.rb
/usr/lib/ruby/vendor_ruby/eim_xml/formatter/
/usr/lib/ruby/vendor_ruby/eim_xml/formatter/element_wrapper.rb
/usr/lib/ruby/vendor_ruby/eim_xml/assertions.rb