parse "gopher://null.host:0/\u0092\xb6\xff\x01\x85P\x91\x06\xa2ܕ\x93\x1e!\x92^\xb7\xfb\x01z\xbf)ʞ\xb7\xd7\xfeI!\xe4\xfb-": net/url: invalid control character in URL