[Sysinfo] Cron <root at lyre> /usr/bin/rsnapshot -c /etc/rsnapshot_desktops.conf daily

[Cron Daemon]

Host key verification failed.
rsync: connection unexpectedly closed (0 bytes received so far) [receiver]
rsync error: unexplained error (code 255) at io.c(600) [receiver=3.0.6]
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rsnapshot encountered an error! The program was invoked with these options:
/usr/bin/rsnapshot -c /etc/rsnapshot_desktops.conf daily 
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ERROR: /usr/bin/rsync returned 255 while processing backup at lena.auton.cs.cmu.edu:/home/benediktb/