Panic goroutine test

test.go

package main

import (
	"fmt"
	"runtime"
	"syscall"
	"time"
)

func main() {
	runtime.GOMAXPROCS(runtime.NumCPU())
	fmt.Println("CPU:", runtime.NumCPU())

	fmt.Printf("Root thread %d\n", syscall.Gettid())

	defer func() {
		if rc := recover(); rc != nil {
			fmt.Println("root defer", rc)
		}
	}()

	go func() {
		fmt.Printf("Child thread %d\n", syscall.Gettid())

		defer func() {
			if rc := recover(); rc != nil {
				fmt.Println("Parent worked", rc)
			}
		}()

		time.Sleep(3 * time.Second)
		go func() {
			// advice to runtime for moving goroutine to another thread
			time.Sleep(time.Microsecond)
			fmt.Printf("Panic in thread %d\n", syscall.Gettid())
			panic("leaf panicked")
		}()

		time.Sleep(time.Second)
	}()

	time.Sleep(time.Second * 10)
}

How to test:
docker run -it -v `pwd`:/gotest golang go run /gotest/test.go