trace_matches -N "an_event" -n 100000 "^ust.an_event:" $trace_loc
trace_matches -N "another_event" -n 100000 "^ust.another_event:" $trace_loc
check_trace_logs "$trace_loc"
trace_matches -N "an_event" -n 100000 "^ust.an_event:" $trace_loc
trace_matches -N "another_event" -n 100000 "^ust.another_event:" $trace_loc
check_trace_logs "$trace_loc"