INFO: setup
Package:    app-containers/containers-common-0.60.4:0
Repository: gentoo
Maintainer: me@rahil.rocks zmedico@gentoo.org,proxy-maint@gentoo.org
Upstream:   https://github.com/containers/common/issues
USE:        abi_x86_64 amd64 elibc_glibc kernel_linux
FEATURES:   preserve-libs sandbox userpriv usersandbox
INFO: prepare
Applying examplify-mounts-conf.patch ...
INFO: test
Skipping make test/check due to ebuild restriction.
INFO: install
Final size of build directory: 66492 KiB (64.9 MiB)
Final size of installed tree:    144 KiB
LOG: postinst

For rootless operations, one needs to configure subuid(5) and
subgid(5)
See /etc/sub{uid,gid} to check whether rootless user is already
configured
If not, quickly configure it with:
usermod --add-subuids 1065536-1131071 <rootless user>
usermod --add-subgids 1065536-1131071 <rootless user>

(Note: Above message is only printed the first time package is
installed. Please look at /usr/share/doc/containers-common-0.60.4/README.gentoo*
for future reference)