Grpc862 in goker failed to repro

[Mskxn]

gobench/gobench/goker/blocking/grpc/862/grpc862_test.go

Lines 57 to 60 in 5affb0a

	select { // Block here
	case <-time.After(sleepTime - time.Since(connectTime)):
	case <-ac.ctx.Done():
	return

It seems that G2 will not hang up forever when timeout at L58.
I failed to repro it using goleak with a little delay before leak check instead of check it immediately.

[timmyyuan]

This is possible because goleak filters goroutines by checking whether they are in a blocked state. In the case of 862, the goroutine switches between being blocked and running within a loop.