--- a/test/failure_handler/src/share/conf/mac.properties	Thu Jan 12 22:55:33 2017 -0800
+++ b/test/failure_handler/src/share/conf/mac.properties	Mon Jan 16 12:32:46 2017 +0100
@@ -64,7 +64,7 @@
 native.core.app=bash
 native.core.delimiter=\0
 native.core.args=-c\0gcore -o ./core.%p %p || \
-  (DevToolsSecurity --status | grep -q enabled && lldb -o 'attach %p' -o 'process save-core core.%p' -o 'detach' -o 'quit')
+  (DevToolsSecurity --status | grep -q enabled && lldb --batch -o 'attach %p' -o 'process save-core core.%p' -o 'detach' -o 'quit')
 native.core.params.timeout=3600000
 ################################################################################
 # environment info to gather