This step fails with the following errors:

```               
W: Failed to fetch https://launchpad.net/~natecarlson/+archive/maven3/dists/trusty/main/binary-amd64/Packages  HttpError404

W: Failed to fetch https://launchpad.net/~natecarlson/+archive/maven3/dists/trusty/main/binary-i386/Packages  HttpError404

E: Some index files failed to download. They have been ignored, or old ones used instead.
```