/usr/lib/ruby/ is in ruby-fog-voxel 0.0.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/fog/
/usr/lib/ruby/vendor_ruby/fog/bin/
/usr/lib/ruby/vendor_ruby/fog/bin/voxel.rb
/usr/lib/ruby/vendor_ruby/fog/compute/
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/
/usr/lib/ruby/vendor_ruby/fog/compute/voxel.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/image.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/images.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real/
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real/devices_list.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real/devices_power.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real/images_list.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real/voxcloud_create.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real/voxcloud_delete.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/real/voxcloud_status.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/server.rb
/usr/lib/ruby/vendor_ruby/fog/compute/voxel/servers.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/
/usr/lib/ruby/vendor_ruby/fog/parsers/compute.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel/
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel/basic.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel/devices_list.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel/images_list.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel/voxcloud_create.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel/voxcloud_delete.rb
/usr/lib/ruby/vendor_ruby/fog/parsers/compute/voxel/voxcloud_status.rb
/usr/lib/ruby/vendor_ruby/fog/voxel/
/usr/lib/ruby/vendor_ruby/fog/voxel.rb
/usr/lib/ruby/vendor_ruby/fog/voxel/compute.rb
/usr/lib/ruby/vendor_ruby/fog/voxel/version.rb