W:GPG error:
http://packages.ros.org lucid InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5523BAEEB01FA116, W:Failed to fetch
http://mirrors.skyshe.cn/ubuntu/dists/t ... 4/Packages Hash Sum mismatch
, W:Failed to fetch
http://mirrors.skyshe.cn/ubuntu/dists/t ... 4/Packages Hash Sum mismatch
, W:Failed to fetch
http://mirrors.skyshe.cn/ubuntu/dists/t ... 4/Packages Hash Sum mismatch
, W:Failed to fetch
http://mirrors.skyshe.cn/ubuntu/dists/t ... 6/Packages Hash Sum mismatch
, W:Failed to fetch
http://archive.canonical.com/ubuntu/dis ... 4/Packages Hash Sum mismatch
, W:Failed to fetch
http://mirrors.skyshe.cn/ubuntu/dists/t ... 4/Packages Hash Sum mismatch
, W:Failed to fetch
http://mirrors.skyshe.cn/ubuntu/dists/t ... 4/Packages Hash Sum mismatch
, W:Failed to fetch
http://extras.ubuntu.com/ubuntu/dists/t ... ce/Sources Hash Sum mismatch
, W:Failed to fetch
http://extras.ubuntu.com/ubuntu/dists/t ... 4/Packages Hash Sum mismatch
, W:Failed to fetch
http://extras.ubuntu.com/ubuntu/dists/t ... 6/Packages Hash Sum mismatch
, W:Failed to fetch
http://mirrors.skyshe.cn/ubuntu/dists/t ... 4/Packages Hash Sum mismatch
, E:Some index files failed to download. They have been ignored, or old ones used instead.