func (f Flags) String() string {
	var res []string
	if f&FlagCRCxxh3 != 0 {
		res = append(res, "CRC")
	}
	if f&FlagEOF != 0 {
		res = append(res, "EOF")
	}
	if f&FlagStateless != 0 {
		res = append(res, "SL")
	}
	if f&FlagPayloadIsErr != 0 {
		res = append(res, "ERR")
	}
	if f&FlagPayloadIsZero != 0 {
		res = append(res, "ZERO")
	}
	if f&FlagSubroute != 0 {
		res = append(res, "SUB")
	}

	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.
		sl := strings.SplitN(g, "\n", 2)
		if len(sl) != 2 {
			continue
		}
		stack := strings.TrimSpace(sl[1])
		// ignore the testing go routine.
		// since the tests will be invoking the leaktest it would contain the test go routine.

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