As an aside, I recommend run.Group [1] as a replacement for WaitGroup. It implements a very common pattern where you have N goroutines that should execute as on

As an aside, I recommend run.Group [1] as a replacement for WaitGroup. It implements a very common pattern where you have N goroutines that should execute as one unit (if one fails, everyone else should abort) and allows you to the final error. Similar to ErrGroup, but better. [1] https://github.com/oklog/run https://github.com/oklog/run