These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] acct-group/memcached-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/memcached-0-r3::gentoo  0 KiB
[ebuild  N     ] net-misc/memcached-1.6.42::gentoo  USE="seccomp ssl -debug -sasl (-selinux) -slabs-reassign -test" 1242 KiB

Total: 3 packages (3 new), Size of downloads: 1242 KiB