#include <boost/test/unit_test.hpp>
using std::list;
-using boost::shared_ptr;
-using boost::weak_ptr;
+using std::shared_ptr;
+using std::weak_ptr;
using boost::optional;
+#if BOOST_VERSION >= 106100
+using namespace boost::placeholders;
+#endif
+
static void
push (Shuffler& s, int frame, Eyes eyes)