// of leak checking. It excludes testing or runtime ones.
func pickRelevantGoroutines() (gs []string) {
	// get runtime stack buffer.
	buf := debug.Stack()
	// runtime stack of go routines will be listed with 2 blank spaces between each of them, so split on "\n\n" .
	for _, g := range strings.Split(string(buf), "\n\n") {
		// Again split on a new line, the first line of the second half contains the info about the go routine.