I never used errgroup but I realize that it's essentially the same what I end up implementing anyways. With standard waitgroups I always move my states as a st

I never used errgroup but I realize that it's essentially the same what I end up implementing anyways. With standard waitgroups I always move my states as a struct with something like a nested *data struct and an err property which is then pushed through the channel. But this way, my error handling is after the read instead of right at the Wait() call.