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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] acct-group/ftp-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/root-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/ftp-0-r5::gentoo  0 KiB
[ebuild  N     ] net-ftp/ftpbase-0.01-r6::gentoo  USE="pam zeroconf" 0 KiB

Total: 4 packages (4 new), Size of downloads: 0 KiB