/usr/ is in ruby-sawyer 0.8.1-3.
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/sawyer/
/usr/lib/ruby/vendor_ruby/sawyer/agent.rb
/usr/lib/ruby/vendor_ruby/sawyer/link_parsers/
/usr/lib/ruby/vendor_ruby/sawyer/link_parsers/hal.rb
/usr/lib/ruby/vendor_ruby/sawyer/link_parsers/simple.rb
/usr/lib/ruby/vendor_ruby/sawyer/relation.rb
/usr/lib/ruby/vendor_ruby/sawyer/resource.rb
/usr/lib/ruby/vendor_ruby/sawyer/response.rb
/usr/lib/ruby/vendor_ruby/sawyer/serializer.rb
/usr/lib/ruby/vendor_ruby/sawyer.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-sawyer/
/usr/share/doc/ruby-sawyer/README.md
/usr/share/doc/ruby-sawyer/changelog.Debian.gz
/usr/share/doc/ruby-sawyer/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/sawyer-0.8.1.gemspec