parse "gopher://null.host:0/Dm6L\x86O(7\xa1=\x14\xac\x87\xa0\xe2\xb0\v\xfb\x8f@\xc8TU\xfa\x8c\xef\xa6i^\xeb\x01j&D\x94\xb0\xa3\xaa": net/url: invalid control character in URL