Sysmerge seems to fail on the latest snapshots:
OpenBSD 5.8-current (GENERIC.MP) #1284: Mon Oct 12 01:17:08 MDT 2015
dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC.MP
OpenBSD 5.8-current (GENERIC.MP) #1464: Mon Oct 12 01:08:59 MDT 2015
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
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# sysmerge
tar: Unable to set file uid/gid of ./etc/dumpdates: Operation not permitted
tar: Unable to set file uid/gid of ./etc/motd: Operation not permitted
tar: Unable to set file uid/gid of ./etc/spwd.db: Operation not permitted
tar: Unable to set file uid/gid of ./etc/ssl: Operation not permitted
tar: Unable to set file uid/gid of ./etc/ssl/cert.pem: Operation not permitted
tar: Unable to set file uid/gid of ./etc/ssl/openssl.cnf: Operation not
permitted
tar: Unable to set file uid/gid of ./etc/ssl/x509v3.cnf: Operation not permitted
tar: Unable to set file uid/gid of ./var/cron: Operation not permitted
tar: Unable to set file uid/gid of ./var/cron/at.deny: Operation not permitted
tar: Unable to set file uid/gid of ./var/cron/cron.deny: Operation not permitted
tar: Unable to set file uid/gid of ./var/cron/tabs: Operation not permitted
tar: Unable to set file uid/gid of ./var/cron/tabs/root: Operation not permitted
tar: Unable to set file uid/gid of ./var/nsd: Operation not permitted
tar: Unable to set file uid/gid of ./var/nsd/etc: Operation not permitted
tar: Unable to set file uid/gid of ./var/nsd/etc/nsd.conf: Operation not
permitted
---- Error: failed to extract etc.tgz
#
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