trace_matches -N "from_library" -n 1 "^ust.from_library:" $trace_loc
trace_matches -N "from_main_before_lib" -n 1 "^ust.from_main_before_lib:" $trace_loc
trace_matches -N "from_main_after_lib" -n 1 "^ust.from_main_after_lib:" $trace_loc
trace_matches -N "from_library" -n 1 "^ust.from_library:" $trace_loc
trace_matches -N "from_main_before_lib" -n 1 "^ust.from_main_before_lib:" $trace_loc
trace_matches -N "from_main_after_lib" -n 1 "^ust.from_main_after_lib:" $trace_loc