Brew install fails on gpg-agent?
Fixed with:

$ brew edit gpg-agent
    - mirror "ftp://ftp.mirrorservice.org/sites/ftp.gnupg.org/gcrypt/gnupg/gnupg-2.0.26.tar.bz2"
    + mirror "http://mirrors.dotsrc.org/gcrypt/gnupg/gnupg-2.0.26.tar.bz2"

$ brew install gpg-agent
$ brew install gnupg2