In the RTS, when we forkProcess we set up the eventlog for the child process. However we currently don't emit any initial events into that child's eventlog. That's wrong because then when reading that eventlog you cannot tell what is going on, you don't know the capsets or tasks or anything.
Now, I must admit that this code has not been tested. I found it in an old git stash pile :-). So this may not be tracing everything, we'll have to eyeball a couple eventlogs to compare them.