Fetched 31.9 MB in 2min 25s (220 kB/s)
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/wily/main/source/Sources  404  Not Found [IP: 91.189.92.152 80]

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/wily/main/binary-amd64/Packages  404  Not Found [IP: 91.189.92.152 80]

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/wily/main/binary-i386/Packages  404  Not Found [IP: 91.189.92.152 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.
preshot2989@MethLAB:~$