diff --git a/integration/util.py b/integration/util.py
index a11c02225..ac3fe2833 100644
--- a/integration/util.py
+++ b/integration/util.py
@@ -140,6 +140,7 @@ class _MagicTextProtocol(ProcessProtocol):
         self.exited.callback(None)
 
     def outReceived(self, data):
+        print("OUT", data)
         data = str(data, sys.stdout.encoding)
         sys.stdout.write(data)
         self._output.write(data)
@@ -148,6 +149,7 @@ class _MagicTextProtocol(ProcessProtocol):
             self.magic_seen.callback(self)
 
     def errReceived(self, data):
+        print("ERR", data)
         data = str(data, sys.stderr.encoding)
         sys.stdout.write(data)