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

Calculating dependencies ... done!
Dependency resolution took 1.50 s (backtrack: 0/20).

[ebuild     U  ] sys-libs/libcap-2.78::gentoo [2.77::gentoo] USE="pam -static-libs -tools" 197 KiB

Total: 1 package (1 upgrade), Size of downloads: 197 KiB