我嘤嘤嘤Nix测试超时，求助！

warning: error: unable to download 'https://cache.nixos.org/nar/15n25gbc310rdjkfbw2859xylll56r22kjm88wb9mqmv8953wnxb.nar.xz': HTTP error 200 (curl error: Timeout was reached); retrying from offset 46562 in 256 ms
warning: error: unable to download 'https://cache.nixos.org/nar/06kqs4arj7f33pnndvp0h3zf9bw8r60fgbd6jw7v5ydsz828avqr.nar.xz': HTTP error 200 (curl error: Timeout was reached); retrying from offset 47567 in 251 ms
warning: error: unable to download 'https://cache.nixos.org/nar/15n25gbc310rdjkfbw2859xylll56r22kjm88wb9mqmv8953wnxb.nar.xz': HTTP error 206 (curl error: Timeout was reached); retrying from offset 46562 in 557 ms
warning: error: unable to download 'https://cache.nixos.org/nar/08242al70hn299yh1vk6il2cyahh6p86qvm72rmqz1z07q36vsk2.nar.xz': HTTP error 200 (curl error: Timeout was reached); retrying from offset 48305 in 287 ms
warning: error: unable to download 'https://cache.nixos.org/nar/1d7lvadkbr8jm60npsndi1dkrdh993b2656ccnqlrc07qqqz9h6g.nar.xz': HTTP error 200 (curl error: Timeout was reached); retrying from offset 47059 in 290 ms
warning: error: unable to download 'https://cache.nixos.org/nar/06kqs4arj7f33pnndvp0h3zf9bw8r60fgbd6jw7v5ydsz828avqr.nar.xz': Timeout was reached (28); retrying from offset 47567 in 563 ms
warning: error: unable to download 'https://cache.nixos.org/nar/15n25gbc310rdjkfbw2859xylll56r22kjm88wb9mqmv8953wnxb.nar.xz': Timeout was reached (28); retrying from offset 46562 in 1179 ms
warning: error: unable to download 'https://cache.nixos.org/nar/08242al70hn299yh1vk6il2cyahh6p86qvm72rmqz1z07q36vsk2.nar.xz': Timeout was reached (28); retrying from offset 48305 in 638 ms
warning: error: unable to download 'https://cache.nixos.org/nar/1d7lvadkbr8jm60npsndi1dkrdh993b2656ccnqlrc07qqqz9h6g.nar.xz': Timeout was reached (28); retrying from offset 47059 in 604 ms
warning: error: unable to download 'https://cache.nixos.org/nar/06kqs4arj7f33pnndvp0h3zf9bw8r60fgbd6jw7v5ydsz828avqr.nar.xz': Timeout was reached (28); retrying from offset 47567 in 1291 ms
warning: error: unable to download 'https://cache.nixos.org/nar/15n25gbc310rdjkfbw2859xylll56r22kjm88wb9mqmv8953wnxb.nar.xz': Timeout was reached (28); retrying from offset 46562 in 2778 ms
warning: error: unable to download 'https://cache.nixos.org/nar/08242al70hn299yh1vk6il2cyahh6p86qvm72rmqz1z07q36vsk2.nar.xz': Timeout was reached (28); retrying from offset 48305 in 1399 ms
warning: error: unable to download 'https://cache.nixos.org/nar/1d7lvadkbr8jm60npsndi1dkrdh993b2656ccnqlrc07qqqz9h6g.nar.xz': Timeout was reached (28); retrying from offset 47059 in 1220 ms
warning: error: unable to download 'https://cache.nixos.org/nar/06kqs4arj7f33pnndvp0h3zf9bw8r60fgbd6jw7v5ydsz828avqr.nar.xz': Timeout was reached (28); retrying from offset 47567 in 2145 ms
error: unable to download 'https://cache.nixos.org/nar/15n25gbc310rdjkfbw2859xylll56r22kjm88wb9mqmv8953wnxb.nar.xz': Timeout was reached (28)
warning: error: unable to download 'https://cache.nixos.org/nar/08242al70hn299yh1vk6il2cyahh6p86qvm72rmqz1z07q36vsk2.nar.xz': Timeout was reached (28); retrying from offset 48305 in 2184 ms
warning: error: unable to download 'https://cache.nixos.org/nar/1d7lvadkbr8jm60npsndi1dkrdh993b2656ccnqlrc07qqqz9h6g.nar.xz': Timeout was reached (28); retrying from offset 47059 in 2658 ms