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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] acct-group/readarr-0-r1::gentoo  0 KiB
[ebuild  N     ] acct-user/readarr-0-r1::gentoo  0 KiB
[ebuild  N     ] www-apps/readarr-bin-0.4.18.2805::gentoo  95110 KiB

Total: 3 packages (3 new), Size of downloads: 95110 KiB