/usr/ is in ruby-unicorn-worker-killer 0.4.4-1.
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/unicorn/
/usr/lib/ruby/vendor_ruby/unicorn/worker_killer/
/usr/lib/ruby/vendor_ruby/unicorn/worker_killer/configuration.rb
/usr/lib/ruby/vendor_ruby/unicorn/worker_killer.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-unicorn-worker-killer/
/usr/share/doc/ruby-unicorn-worker-killer/README.md
/usr/share/doc/ruby-unicorn-worker-killer/changelog.Debian.gz
/usr/share/doc/ruby-unicorn-worker-killer/changelog.gz
/usr/share/doc/ruby-unicorn-worker-killer/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/unicorn-worker-killer-0.4.4.gemspec