Index: tests/pybin/tools.py
===================================================================
--- tests/pybin/tools.py	(revision 4c26a94d031fbbf46a74fc039b681fdc1b89097b)
+++ tests/pybin/tools.py	(revision a10f6b41699df79630c018e98b486d9ee3ecfd70)
@@ -374,5 +374,5 @@
 
 	if not os.path.isfile(core):
-		return 1, "ERR No core dump (limit soft: {} hard: {})".format(resource.getrlimit(resource.RLIMIT_CORE))
+		return 1, "ERR No core dump (limit soft: {} hard: {})".format(*resource.getrlimit(resource.RLIMIT_CORE))
 
 	try: