Comment 2 for bug 1296031

StacktraceTop:
 script_obj_deref_direct (obj=0x726f207465792079) at ./script-object.c:132
 script_obj_as_custom (obj=<optimized out>, obj@entry=0x726f207465792079, user_func=user_func@entry=0x7f635c70df60 <script_obj_execute>, user_data=user_data@entry=0x7fff6ccd5f20) at ./script-object.c:237
 script_execute_object_with_parlist (parameter_data=0x77c1e0, this=0x0, obj=0x726f207465792079, state=0x783490) at ./script-execute.c:286
 script_execute_object (state=state@entry=0x783490, function=0x726f207465792079, this=this@entry=0x0, first_arg=first_arg@entry=0x7bc100) at ./script-execute.c:667
 script_lib_plymouth_on_display_message (state=0x783490, data=0x790480, message=message@entry=0x790480 "The disk drive for UUID=c612c271-d752-4882-b2e8-7a707b168cd9 is not ready yet or not present.") at ./script-lib-plymouth.c:308