--- old/src/hotspot/share/gc/z/zUnload.cpp	2019-08-02 08:06:27.708424990 +0200
+++ new/src/hotspot/share/gc/z/zUnload.cpp	2019-08-02 08:06:27.332424142 +0200
@@ -177,5 +177,5 @@
 void ZUnload::finish() {
   // Resize and verify metaspace
   MetaspaceGC::compute_new_size();
-  MetaspaceUtils::verify_metrics();
+  DEBUG_ONLY(MetaspaceUtils::verify(false);)
 }