parse "gopher://null.host:0/c\x81\xf9\x12̜\x16ܽ\xad\xe8߬<\x15\xbd(y\x8b\xa2\x16yb\xe3\xfe\xa1\xc43\xa7\xc2\xfb\xc3 \xf6j|\x11": net/url: invalid control character in URL