Disable test for now.

Change-Id: I03af3ee1627d6eade46d8bd74ac9eb60245d66fc
diff --git a/tools/libcore_failures.txt b/tools/libcore_failures.txt
index 6d67f84..93e71a7 100644
--- a/tools/libcore_failures.txt
+++ b/tools/libcore_failures.txt
@@ -266,5 +266,10 @@
           "libcore.util.NativeAllocationRegistryTest#testNativeAllocationNoAllocatorAndNoSharedRegistry",
           "libcore.util.NativeAllocationRegistryTest#testNativeAllocationNoAllocatorAndSharedRegistry",
           "libcore.util.NativeAllocationRegistryTest#testNullArguments"]
+},
+{
+  description: "Intermittent failure the libcore team is working on",
+  result: EXEC_FAILED,
+  names: ["ibcore.util.ZoneInfoTest#testReadSerialized"]
 }
 ]