/usr/ is in ruby-omniauth-crowd 2.2.3-3.
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/omniauth/
/usr/lib/ruby/vendor_ruby/omniauth/strategies/
/usr/lib/ruby/vendor_ruby/omniauth/strategies/crowd/
/usr/lib/ruby/vendor_ruby/omniauth/strategies/crowd/configuration.rb
/usr/lib/ruby/vendor_ruby/omniauth/strategies/crowd/crowd_validator.rb
/usr/lib/ruby/vendor_ruby/omniauth/strategies/crowd.rb
/usr/lib/ruby/vendor_ruby/omniauth_crowd/
/usr/lib/ruby/vendor_ruby/omniauth_crowd/version.rb
/usr/lib/ruby/vendor_ruby/omniauth_crowd.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-omniauth-crowd/
/usr/share/doc/ruby-omniauth-crowd/README.md
/usr/share/doc/ruby-omniauth-crowd/changelog.Debian.gz
/usr/share/doc/ruby-omniauth-crowd/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/omniauth_crowd-2.2.3.gemspec