parse "gopher://\xf4\b\xfd\x8c\xfeϦ\xe8\x11\x1aM4\x1a\x884B\x83ϔ56\x90@@\xea\x85\x04\xf8\xdd[\x8d5.\x94\xd0\xf8Tj\xfc\xbe6\xc1\x11]/": net/url: invalid control character in URL