parse "gopher://null.host:0/!\xb6\x94L\xd3\xe9\x9bUv\xe7\xc1\xb8\x14_\x88T\xf06\xcb-\xf0=\xcc\xe4\x97\x17\xa5@\x1a2h_\xda \xa5·\xcaI\xe5,~": net/url: invalid control character in URL