/usr/lib/ is in ruby-foreman 0.82.0-2.
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/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/foreman/
/usr/lib/ruby/vendor_ruby/foreman/cli.rb
/usr/lib/ruby/vendor_ruby/foreman/distribution.rb
/usr/lib/ruby/vendor_ruby/foreman/engine/
/usr/lib/ruby/vendor_ruby/foreman/engine/cli.rb
/usr/lib/ruby/vendor_ruby/foreman/engine.rb
/usr/lib/ruby/vendor_ruby/foreman/env.rb
/usr/lib/ruby/vendor_ruby/foreman/export/
/usr/lib/ruby/vendor_ruby/foreman/export/base.rb
/usr/lib/ruby/vendor_ruby/foreman/export/bluepill.rb
/usr/lib/ruby/vendor_ruby/foreman/export/daemon.rb
/usr/lib/ruby/vendor_ruby/foreman/export/inittab.rb
/usr/lib/ruby/vendor_ruby/foreman/export/launchd.rb
/usr/lib/ruby/vendor_ruby/foreman/export/runit.rb
/usr/lib/ruby/vendor_ruby/foreman/export/supervisord.rb
/usr/lib/ruby/vendor_ruby/foreman/export/systemd.rb
/usr/lib/ruby/vendor_ruby/foreman/export/upstart.rb
/usr/lib/ruby/vendor_ruby/foreman/export.rb
/usr/lib/ruby/vendor_ruby/foreman/helpers.rb
/usr/lib/ruby/vendor_ruby/foreman/process.rb
/usr/lib/ruby/vendor_ruby/foreman/procfile.rb
/usr/lib/ruby/vendor_ruby/foreman/version.rb
/usr/lib/ruby/vendor_ruby/foreman.rb