Travis failure investigation

servo · wafflespeanut · Jul 17, 2016 · Jul 17, 2016 · bad557493068c15558e76772c897b952517c8963
commit bad557493068c15558e76772c897b952517c8963
diff --git a/python/mach_bootstrap.py b/python/mach_bootstrap.py
@@ -155,7 +155,7 @@ def _activate_virtualenv(topdir):
         process.wait()
         if process.returncode:
             sys.exit("Pip failed to execute properly: {}"
-                     .format(process.communicate()[1]))
+                     .format(process.communicate()))
 
         open(marker_path, 'w').close()