var crypto/x509.useFallbackRoots

4 uses

	crypto/x509 (current package)
		root.go#L33: 	useFallbackRoots bool
		root.go#L59: 	if !useFallbackRoots && systemCertsAvail {
		root.go#L63: 	if useFallbackRoots && systemCertsAvail {
		root.go#L104: 		useFallbackRoots = x509usefallbackroots.Value() == "1"