SDK3: Timed out operations do not log Response Time Observability info

Required by the rubric:

"If you make a request with an abnormally low timeout, do you see in the message returned with the error the requisite information from the Response Time Observability sdk-rfc?"

I am using code:

upsertResult, err := collection.Upsert("my-document", map[string]string{"name": "mike"}, &gocb.UpsertOptions{

   Timeout: 1,

})

fmt.Println(err)

And just see "operation timed out" logged.

It's possible this is a factor of my Go ignorance, and perhaps I'm meant to be casting it to a particular sort of error first?