parse "gopher://null.host:0/§\x1a\xe4E!Z\xcfG\x17\xa2\xf5;\xf3e\xfb\x17^ \xe40\xeb\x82\u007fO\xeb3\xadXh\xb7\x15\vN\a\x9cc\x15\xce\xe9": net/url: invalid control character in URL