https://play.golang.org/p/76gIgzXgcS

Why is err not nil when a is?

Our theory is that err is a pointer to a nil pointer so technically not 
nil. We would have assumed that a pointer to a nil pointer would be nil 
though. Why is that that not the case?

By the way, we don't need help with this. We found a workaround and are 
satisfied with that. Just looking for details on why this is the case for 
our own knowledge as it tripped us up for a while.

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