--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=30419, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=30418, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=30417, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=30416, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
+++ exited with 0 +++