/usr/lib/ is in ruby-semantic-puppet 0.1.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/semantic_puppet.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/
/usr/lib/ruby/vendor_ruby/semantic_puppet/dependency/
/usr/lib/ruby/vendor_ruby/semantic_puppet/dependency/module_release.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/dependency/source.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/dependency/unsatisfiable_graph.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/dependency/graph.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/dependency/graph_node.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/version.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/version_range.rb
/usr/lib/ruby/vendor_ruby/semantic_puppet/dependency.rb