parse "gopher://null.host:0/4׀?\xf7\xd9yn\xb5!\xa8G\x886[\xb8g\xea\xe4\x8aZS\xeb3\x1c0\x99\x1dԧ\xb2'\x1dt\xd5\x12\xee\xbd\xe2": net/url: invalid control character in URL