(PID 20379) Beginning transaction #123  at foo.pl line 6.
        (the child fails) at foo.pl line 13.
(PID 20380) Rolling back transaction #123: died in eval with Child process failure at foo.pl line 14.
        (the parent does OK) at foo.pl line 10.
(PID 20379) Committing transaction #123 at foo.pl line 21.