/usr/ is in ruby-net-http-digest-auth 1.4-2.
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/net-http-digest_auth-1.4.gemspec
/usr/share/doc/
/usr/share/doc/ruby-net-http-digest-auth/
/usr/share/doc/ruby-net-http-digest-auth/README.txt
/usr/share/doc/ruby-net-http-digest-auth/examples/
/usr/share/doc/ruby-net-http-digest-auth/examples/auth_server.rb
/usr/share/doc/ruby-net-http-digest-auth/examples/net_http_example.rb
/usr/share/doc/ruby-net-http-digest-auth/copyright
/usr/share/doc/ruby-net-http-digest-auth/changelog.Debian.gz
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/net/
/usr/lib/ruby/vendor_ruby/net/http/
/usr/lib/ruby/vendor_ruby/net/http/digest_auth.rb