/usr/ is in ruby-redis-actionpack 4.0.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/redis/
/usr/lib/ruby/vendor_ruby/redis/actionpack/
/usr/lib/ruby/vendor_ruby/redis/actionpack/version.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/
/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/
/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/session/
/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/session/redis_store.rb
/usr/lib/ruby/vendor_ruby/redis-actionpack.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/redis-actionpack-4.0.0.gemspec
/usr/share/doc/
/usr/share/doc/ruby-redis-actionpack/
/usr/share/doc/ruby-redis-actionpack/copyright
/usr/share/doc/ruby-redis-actionpack/changelog.Debian.gz
/usr/share/doc/ruby-redis-actionpack/README.md