sudo snap install conjure-up --channel beta --classic
error: cannot perform the following tasks:
- Run configure hook of "conjure-up" snap if present (run hook "configure": 
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+ [[ ! -x /snap/bin/lxd ]]
+ grep -q zesty /etc/lsb-release
+ apt-get -qq update
W: The repository 'file:/var/my-local-repo ./ Release' does not have a Release file.
W: GPG error: https://private-ppa.launchpad.net/oem-solutions-group/ppa/ubuntu xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B52B913A41086767
W: The repository 'https://private-ppa.launchpad.net/oem-solutions-group/ppa/ubuntu xenial InRelease' is not signed.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://apt.insynchq.com/ubuntu xenial InRelease: The following signatures were invalid: KEYEXPIRED 1473479811  KEYEXPIRED 1473479811  KEYEXPIRED 1473479811  KEYEXPIRED 1473479811  KEYEXPIRED 1473479811
W: The repository 'http://ppa.launchpad.net/ce-infrastructure/zsync-curl/ubuntu xenial Release' does not have a Release file.
W: Failed to fetch http://apt.insynchq.com/ubuntu/dists/xenial/InRelease  The following signatures were invalid: KEYEXPIRED 1473479811  KEYEXPIRED 1473479811  KEYEXPIRED 1473479811  KEYEXPIRED 1473479811  KEYEXPIRED 1473479811
E: Failed to fetch http://ppa.launchpad.net/ce-infrastructure/zsync-curl/ubuntu/dists/xenial/main/binary-amd64/Packages  404  Not Found
W: Some index files failed to download. They have been ignored, or old ones used instead.
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