W: Failed to fetch https://l...content-available-to-author-only...d.net/~tortoisehg-ppa/dists/precise/main/source/Sources The requested URL returned error: 404
W: Failed to fetch https://l...content-available-to-author-only...d.net/~tortoisehg-ppa/dists/precise/main/binary-amd64/Packages The requested URL returned error: 404
W: Failed to fetch https://l...content-available-to-author-only...d.net/~tortoisehg-ppa/dists/precise/main/binary-i386/Packages The requested URL returned error: 404
E: Some index files failed to download. They have been ignored, or old ones used instead.