parse "gopher://null.host:0/\u0081:\xe9=q\xad\xb1-W\x8b\xa1\"\xb9\x8e\xe0\x03\xb5\x93)0\x15h\x92.\x0f\xbf(m\x18\xbfm8\xbf\xf5\xa4Z\x93\xa5\xa6(y\b\xd4": net/url: invalid control character in URL