Error not bubbling up about go-workers

[nanikjava]

Looks like the problem is inside the following piece of code inside startWork().

if workErr := r.workFunc(in, r.outChan); workErr != nil {
		r.once.Do(func() {
			errors.As(err, &workErr)
			r.cancel()
			return
		})
	}

playing around with the code noticed that the when the err is nil (which is always) the error from the worker is not available. However, playing around the code and adding the following can see that the .As function works

if workErr := r.workFunc(in, r.outChan); workErr != nil {
		r.once.Do(func() {
			 err = context.Canceled
			errors.As(err, &workErr)
			r.cancel()
			return
		})
	}

[catmullet]

@nanikjava, Thank you for taking the time to submit an issue. There is definitely an issue where an error will not bubble up. The unit tests for testing a return of an error did not catch it. I am submitting for review a fix for this issue.

[nanikjava]

Tested the referenced PR #31 and it works.

Closing the ticket.