parse "gopher://null.host:0/»~\x91\xae\xa3ŮtR\xf8ר\r\xbb\x0651ĩ\x9eO\x90\x18\x8b\x8dg\xc81\x93\x9d\xd9\x11\xf9\xaf\xd0\x14:\xc6>\x8c\xd1\xd2F\xfd.\xbd": net/url: invalid control character in URL