It is prudent to remember that all life, and even many things that aren't considered life, such as viruses, are powered by self replicating swarms of machines -

It is prudent to remember that all life, and even many things that aren't considered life, such as viruses, are powered by self replicating swarms of machines - made of proteins. Self replication itself does not spell a crisis. It would have to be efficient, self-directed and most importantly, fast.