/usr/ is in ruby-delayer 0.0.2-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/delayer-0.0.2.gemspec
/usr/share/doc/
/usr/share/doc/ruby-delayer/
/usr/share/doc/ruby-delayer/copyright
/usr/share/doc/ruby-delayer/README.md
/usr/share/doc/ruby-delayer/changelog.Debian.gz
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/delayer.rb
/usr/lib/ruby/vendor_ruby/delayer/
/usr/lib/ruby/vendor_ruby/delayer/procedure.rb
/usr/lib/ruby/vendor_ruby/delayer/error.rb
/usr/lib/ruby/vendor_ruby/delayer/priority.rb
/usr/lib/ruby/vendor_ruby/delayer/extend.rb
/usr/lib/ruby/vendor_ruby/delayer/version.rb