/usr/ is in ruby-addressable 2.3.8-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/addressable-2.3.8.gemspec
/usr/share/ruby-addressable/
/usr/share/ruby-addressable/unicode.data
/usr/share/doc/
/usr/share/doc/ruby-addressable/
/usr/share/doc/ruby-addressable/copyright
/usr/share/doc/ruby-addressable/README.md
/usr/share/doc/ruby-addressable/changelog.Debian.gz
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/addressable/
/usr/lib/ruby/vendor_ruby/addressable/uri.rb
/usr/lib/ruby/vendor_ruby/addressable/idna.rb
/usr/lib/ruby/vendor_ruby/addressable/idna/
/usr/lib/ruby/vendor_ruby/addressable/idna/native.rb
/usr/lib/ruby/vendor_ruby/addressable/idna/pure.rb
/usr/lib/ruby/vendor_ruby/addressable/template.rb
/usr/lib/ruby/vendor_ruby/addressable/version.rb