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

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

[ebuild     U  ] sys-fs/fuse-3.18.3:3/4::gentoo [3.18.1:3/4::gentoo] USE="suid -io-uring -systemtap -test" 2520 KiB

Total: 1 package (1 upgrade), Size of downloads: 2520 KiB