root@juju-a915e8-0:~# apt-get update
Hit:1 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Ign:4 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop InRelease
Get:5 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Ign:6 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop Release
Ign:7 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib amd64 Packages
Ign:8 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib all Packages
Ign:9 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en_US
Ign:10 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en
Ign:7 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib amd64 Packages
Ign:8 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib all Packages
Ign:9 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en_US
Ign:10 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en
Ign:7 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib amd64 Packages
Ign:8 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib all Packages
Ign:9 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en_US
Ign:10 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en
Ign:7 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib amd64 Packages
Ign:8 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib all Packages
Ign:9 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en_US
Ign:10 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en
Ign:7 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib amd64 Packages
Ign:8 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib all Packages
Ign:9 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en_US
Ign:10 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en
Err:7 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib amd64 Packages
  403  Forbidden
Ign:8 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib all Packages
Ign:9 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en_US
Ign:10 http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop/contrib Translation-en
Fetched 306 kB in 7s (40.9 kB/s)
Reading package lists... Done
W: The repository 'http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64 bigtop Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://bigtop-repos.s3.amazonaws.com/releases/1.2.0/ubuntu/16.04/x86_64/dists/bigtop/contrib/binary-amd64/Packages  403  Forbidden
E: Some index files failed to download. They have been ignored, or old ones used instead.