monitor tracee and local tracer to avoid "dead" processes
this may be removed at some point, it's very brutal. But when you write some code, it may happen (it "may"!!) that *sometimes* the code does not work and crashes. In thoses cases I prefer the local tracer (or the tracee) to go away immediately without even thinking about it maybe still running in the background. In case of monitoring (as opposed to debugging) maybe it's preferable to let the process live its life as it wants. Time will tell.