--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25415, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25417, 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=25418, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=25416, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
+++ exited with 0 +++