The issue is that you used the GNOME3 Staging PPA for Xenial. As soon as
yakkety opened up, you upgraded to yakkety keeping the GNOME 3.20
packages but without the GNOME3 PPAs.
The PPA has a note that you should run ppa-purge prior to upgrading to a new
Ubuntu version:
** Changed in: evolution-data-server (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1617693
Title:
package evolution-data-server 3.21.90-0ubuntu2 failed to
** Tags removed: need-duplicate-check
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You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1617693
Title:
package evolution-data-server 3.21.90-0ubuntu2 failed to
install/upgrade: trying to overwrite