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

Calculating dependencies ... done!
Dependency resolution took 1.07 s (backtrack: 0/20).

[ebuild  N     ] dev-db/lmdb-0.9.36:0/0.9.36::gentoo  USE="-static-libs" 147 KiB
[ebuild  N     ] dev-libs/cyrus-sasl-2.1.28-r5:2::gentoo  USE="gdbm pam sqlite ssl -authdaemond -berkdb -kerberos -ldapdb -mysql -openldap -postgres -sample (-selinux) -srp -static-libs -urandom" 3945 KiB
[ebuild  N     ] mail-client/mutt-2.3.2::gentoo  USE="gdbm imap lmdb nls pop sasl smtp ssl -autocrypt -berkdb -debug -doc -gnutls -gpgme -gsasl -hcache -idn -kerberos -mbox (-prefix) -qdbm (-selinux) -slang -tokyocabinet -vanilla" 5462 KiB

Total: 3 packages (3 new), Size of downloads: 9553 KiB