parse "gopher://null.host:0/±\xbbZ\x16\xba{\xceR`\xb0\x10\xf5\x0f\xb1j0~TDZZ\xac\x83\x11\xf1B\xb5M(\xcc\x06\xe6\x9b\xdd.`2\xab\xf4": net/url: invalid control character in URL