/usr/ is in ruby-sasl 0.0.3.3-2.
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/pyu-ruby-sasl-0.0.3.3.gemspec
/usr/share/doc/
/usr/share/doc/ruby-sasl/
/usr/share/doc/ruby-sasl/README.markdown
/usr/share/doc/ruby-sasl/copyright
/usr/share/doc/ruby-sasl/changelog.Debian.gz
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/sasl/
/usr/lib/ruby/vendor_ruby/sasl/anonymous.rb
/usr/lib/ruby/vendor_ruby/sasl/base64.rb
/usr/lib/ruby/vendor_ruby/sasl/digest_md5.rb
/usr/lib/ruby/vendor_ruby/sasl/base.rb
/usr/lib/ruby/vendor_ruby/sasl/plain.rb
/usr/lib/ruby/vendor_ruby/sasl.rb