/usr/ is in ruby-validate-email 0.1.6-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-validate-email/
/usr/share/doc/ruby-validate-email/README.markdown
/usr/share/doc/ruby-validate-email/changelog.Debian.gz
/usr/share/doc/ruby-validate-email/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/gems/
/usr/share/rubygems-integration/all/gems/validate_email-0.1.6/
/usr/share/rubygems-integration/all/gems/validate_email-0.1.6/README.markdown
/usr/share/rubygems-integration/all/gems/validate_email-0.1.6/lib/
/usr/share/rubygems-integration/all/gems/validate_email-0.1.6/lib/locale/
/usr/share/rubygems-integration/all/gems/validate_email-0.1.6/lib/locale/en.yml
/usr/share/rubygems-integration/all/gems/validate_email-0.1.6/lib/validate_email.rb
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/validate_email-0.1.6.gemspec