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

Calculating dependencies ... done!
Dependency resolution took 1.53 s (backtrack: 0/20).

[ebuild     U  ] x11-misc/shared-mime-info-2.5.1::gentoo [2.4-r3::gentoo] USE="-test" 7821 KiB

Total: 1 package (1 upgrade), Size of downloads: 7821 KiB