parse "gopher://null.host:0/`_\xae\x9f\x17\xa4\x94\xd3\x0f9G}Ӝ&<5\xdd\xfeG?\x00B\x8c7I\xac\xa4\x9eq/\x86\x86\x12\xc5\xfa": net/url: invalid control character in URL