/usr/ is in ruby-torquebox-no-op 3.1.2-1.
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/torquebox/
/usr/lib/ruby/vendor_ruby/torquebox/no-op/
/usr/lib/ruby/vendor_ruby/torquebox/no-op/version.rb
/usr/lib/ruby/vendor_ruby/torquebox/no-op/injectors.rb
/usr/lib/ruby/vendor_ruby/torquebox/no-op/transactions.rb
/usr/lib/ruby/vendor_ruby/torquebox/no-op/stomp.rb
/usr/lib/ruby/vendor_ruby/torquebox/no-op/messaging.rb
/usr/lib/ruby/vendor_ruby/torquebox-no-op.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-torquebox-no-op/
/usr/share/doc/ruby-torquebox-no-op/copyright
/usr/share/doc/ruby-torquebox-no-op/changelog.Debian.gz
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/torquebox-no-op-3.1.2.gemspec