--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
+++ exited with 0 +++