- Trace output in apiserver logs is more organized and comprehensive. Traces are nested, and for all non-long running request endpoints, the entire filter chain is instrumented (e.g. authentication check is included). ([#88936](https://github.com/kubernetes/kubernetes/pull/88936), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery, CLI, Cloud Provider, Cluster Lifecycle, Instrumentation and Scheduling]...

* Upgrade golang version to 1.7.6 ([#46405](https://github.com/kubernetes/kubernetes/pull/46405), [@cblecker](https://github.com/cblecker))
* kube-proxy handling of services with no endpoints now applies to both INPUT and OUTPUT chains, preventing socket leak. ([#43972](https://github.com/kubernetes/kubernetes/pull/43972), [@thockin](https://github.com/thockin))

		s.Fatalf("node must be a map or a channel")
	}
	if n.X.Type().IsChan() && n.Op() == ir.OLEN {
		s.Fatalf("cannot inline len(chan)") // must use runtime.chanlen now
	}
	if n.X.Type().IsChan() && n.Op() == ir.OCAP {
		s.Fatalf("cannot inline cap(chan)") // must use runtime.chancap now
	}
	// if n == nil {
	//   return 0
	// } else {
	//   // len
	//   return *((*int)n)
	//   // cap