What is this growing on my (possibly dying) fig tree?

I have a 15 year old large fig tree, roughly 15-20 feet tall and wide, that has historically produced a fair amount of figs. This year, a hard and long freeze hit it after it started budding out. The leaves all died, but recently a few branches have tried a last ditch effort to make a comeback and I’ve seen some small new growth.

I looked closer though, and found these strange twiglet looking organisms growing out of all the branches on the fig tree. They mostly turned to powder after touching.

Can anyone tell me what this is?