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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] sys-fs/mtools-4.0.49::gentoo  USE="-gui" 388 KiB
[ebuild  N     ] app-misc/fdutils-5.6_p2::gentoo  USE="-doc" 275 KiB

Total: 2 packages (2 new), Size of downloads: 663 KiB