parse "gopher://null.host:0/Ö\xc6?\xab\x85\xed\x00\xb8\x94z\x1c\"\xbbY\x15\x8d\x1cY\xbea\xd3]{\xfe\"\xec$>\xce\xc7\xe1\x0e": net/url: invalid control character in URL