parse "gopher://\x8f\\A\x0f\x99IN\x8ar\x87\xcd\xfb\xf2V\x8a\x1a\x9d\x9fH7\x95\x19<\xd4\x15\xeb\xa3PrF\x0fEj\x97\x03/": net/url: invalid control character in URL