--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22530, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
+++ exited with 0 +++