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

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

[ebuild     U  ] dev-perl/HTTP-Date-6.80.0::gentoo [6.60.0::gentoo] USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 35 KiB

Total: 1 package (1 upgrade), Size of downloads: 35 KiB