parse "gopher://null.host:0/6o\x96\xa1G\xa3\xcc_$kpF\x975\x02\x86\xcag\xc5\xe6\xf4\x9b\xb0\xa3\x8e;̎\xc7\x0ft\xd5\xf6yъ\x99": net/url: invalid control character in URL