--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=29719, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=29717, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=29721, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
+++ exited with 0 +++