Index: rstudio-1.4.1717/src/cpp/core/include/core/Thread.hpp
===================================================================
--- rstudio-1.4.1717.orig/src/cpp/core/include/core/Thread.hpp
+++ rstudio-1.4.1717/src/cpp/core/include/core/Thread.hpp
@@ -17,9 +17,11 @@
 #define CORE_THREAD_HPP
 
 #include <queue>
+#include <set>
 
 #include <boost/utility.hpp>
 #include <boost/function.hpp>
+#include <boost/thread/mutex.hpp>
 
 #include <core/BoostErrors.hpp>
 #include <core/BoostThread.hpp>