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

Calculating dependencies ... done!
Dependency resolution took 1.51 s (backtrack: 0/20).

[ebuild     UD ] dev-perl/Syntax-Keyword-Try-0.300.0::gentoo [0.310.0::gentoo] USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 45 KiB

Total: 1 package (1 downgrade), Size of downloads: 45 KiB