Blacklist test failing on walleye bots.

Test: run-libcore-tests
Change-Id: I81ceef72694beee5e5ba023a7340e6a60d084043
diff --git a/tools/libcore_failures.txt b/tools/libcore_failures.txt
index 9b0873e..d65134c 100644
--- a/tools/libcore_failures.txt
+++ b/tools/libcore_failures.txt
@@ -234,5 +234,13 @@
     "libcore.libcore.icu.TimeZoneIntegrationTest#testTimeZoneDebugInfo",
     "libcore.libcore.icu.TimeZoneIntegrationTest#testTzDataSetVersions"
   ]
+},
+{
+  description: "Timeout on walleye bots, currenlty on OPM1.171019.019. But test passes on Q, so just mark it fail here.",
+  result: EXEC_FAILED,
+  modes: [device_testdex],
+  names: [
+    "libcore.libcore.io.OsTest#testCrossFamilyBindConnectSendto"
+  ]
 }
 ]