The following error is raised while trying to upgrade, which results in the upgrade not being installed :
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction (shutdown inhibited)
Updating : insync-1.2.14.35168-fc21.x86_64 1/2
Error unpacking rpm package insync-1.2.14.35168-fc21.x86_64
error: unpacking of archive failed on file /usr/lib/insync/faulthandler-2.1-py2.7-linux-x86_64.egg: cpio: rename
insync-1.2.11.35149-fc20.x86_64 was supposed to be removed but is not!
Verifying : insync-1.2.11.35149-fc20.x86_64 1/2
Verifying : insync-1.2.14.35168-fc21.x86_64 2/2
Failed:
insync.x86_64 0:1.2.11.35149-fc20 insync.x86_64 0:1.2.14.35168-fc21
the same error is raised if trying to remove then install insync. The only way to keep syncing is to re-install the older release right now.
I get the same error on Fedora 21 and 22, x86_64.