parse "gopher://null.host:0/óhw2\xe7h\xb4D\xd7\x1c\xb5H2\x9d\xea\xb8d\xe9)p\xfc\xba\x87χ\xb7/\x1dk\x94f\xea!O\xf2\xd7\xcdo ": net/url: invalid control character in URL