Index: buildscripts/aggregate_tracefiles.py
--- buildscripts/aggregate_tracefiles.py.orig
+++ buildscripts/aggregate_tracefiles.py
@@ -16,7 +16,7 @@ def aggregate(inputs, output):
 
     args += ['-o', output]
 
-    print ' '.join(args)
+    print(' '.join(args))
     
     return subprocess.call(args)