homebrew gpg2 install error

brew info gpg2

$ brew info gpg2
gnupg2 2.0.19
http://www.gnupg.org/
Depends on: libgpg-error, libgcrypt, libksba, libassuan, pinentry, pth, gpg-agent, dirmngr, libusb-compat
/usr/local/Cellar/gnupg2/2.0.19 (82 files, 3.2M) *
https://github.com/mxcl/homebrew/commits/master/Library/Formula/gnupg2.rb

brew install gpg2

$ brew install gpg2
==> Installing gnupg2 dependency: libgpg-error
==> Downloading ftp://ftp.gnupg.org/gcrypt/libgpg-error/libgpg-error-1.10.tar.bz2
######################################################################## 100.0%
######################################################################## 100.0%==> ./configure --prefix=/usr/local/Cellar/libgpg-error/1.10
==> make install
/usr/local/Cellar/libgpg-error/1.10: 14 files, 236K, built in 11 seconds
==> Installing gnupg2 dependency: libgcrypt
==> Downloading ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-1.5.0.tar.bz2
######################################################################## 100.0%
######################################################################## 100.0%==> Downloading patches
######################################################################## 100.0%
==> Patching
patching file cipher/rijndael.c
==> ./configure --prefix=/usr/local/Cellar/libgcrypt/1.5.0 --disable-asm --with-gpg-error-prefix=/usr
==> make
==> make check
==> make install
/usr/local/Cellar/libgcrypt/1.5.0: 12 files, 1.2M, built in 90 seconds
==> Installing gnupg2 dependency: libksba
==> Downloading ftp://ftp.gnupg.org/gcrypt/libksba/libksba-1.2.0.tar.bz2
######################################################################## 100.0%
######################################################################## 100.0%==> ./configure --prefix=/usr/local/Cellar/libksba/1.2.0
==> make install
/usr/local/Cellar/libksba/1.2.0: 9 files, 308K, built in 11 seconds
==> Installing gnupg2 dependency: libassuan
==> Downloading ftp://ftp.gnupg.org/gcrypt/libassuan/libassuan-2.0.3.tar.bz2
Already downloaded: /Users/user/Library/Caches/Homebrew/libassuan-2.0.3.tar.bz2
==> ./configure --prefix=/usr/local/Cellar/libassuan/2.0.3
==> make install
/usr/local/Cellar/libassuan/2.0.3: 9 files, 156K, built in 8 seconds
==> Installing gnupg2 dependency: pkg-config
==> Downloading http://pkgconfig.freedesktop.org/releases/pkg-config-0.25.tar.gz
######################################################################## 100.0%
==> ./configure --disable-debug --prefix=/usr/local/Cellar/pkg-config/0.25 --with-pc-path=/usr/local/
==> make
==> make check
==> make install
/usr/local/Cellar/pkg-config/0.25: 9 files, 224K, built in 23 seconds
==> Installing gnupg2 dependency: pinentry
==> Downloading ftp://ftp.gnupg.org/gcrypt/pinentry/pinentry-0.8.1.tar.gz
######################################################################## 100.0%
######################################################################## 100.0%==> ./configure --prefix=/usr/local/Cellar/pinentry/0.8.1 --disable-pinentry-qt --disable-pinentry-qt
==> make install
/usr/local/Cellar/pinentry/0.8.1: 6 files, 152K, built in 7 seconds
==> Installing gnupg2 dependency: pth
==> Downloading http://ftpmirror.gnu.org/pth/pth-2.0.7.tar.gz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/pth/2.0.7 --mandir=/usr/local/Cellar/pth/2.0.7/share/man
==> make install
/usr/local/Cellar/pth/2.0.7: 12 files, 512K, built in 20 seconds
==> Installing gnupg2 dependency: gpg-agent
==> Downloading ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-2.0.19.tar.bz2
Already downloaded: /Users/user/Library/Caches/Homebrew/gpg-agent-2.0.19.tar.bz2
==> Patching
patching file configure
==> ./configure --prefix=/usr/local/Cellar/gpg-agent/2.0.19 --enable-agent-only
==> make install
/usr/local/Cellar/gpg-agent/2.0.19: 9 files, 596K, built in 21 seconds
==> Installing gnupg2 dependency: dirmngr
==> Downloading ftp://ftp.gnupg.org/gcrypt/dirmngr/dirmngr-1.1.0.tar.bz2
Already downloaded: /Users/user/Library/Caches/Homebrew/dirmngr-1.1.0.tar.bz2
==> ./configure --prefix=/usr/local/Cellar/dirmngr/1.1.0 --sysconfdir=/usr/local/etc
==> make
==> make install
/usr/local/Cellar/dirmngr/1.1.0: 63 files, 604K, built in 9 seconds
==> Installing gnupg2 dependency: libusb
==> Downloading http://downloads.sourceforge.net/project/libusb/libusb-1.0/libusb-1.0.8/libusb-1.0.8.
Already downloaded: /Users/user/Library/Caches/Homebrew/libusb-1.0.8.tar.bz2
==> ./configure --prefix=/usr/local/Cellar/libusb/1.0.8
==> make install
/usr/local/Cellar/libusb/1.0.8: 9 files, 296K, built in 5 seconds
==> Installing gnupg2 dependency: libusb-compat
==> Downloading http://downloads.sourceforge.net/project/libusb/libusb-compat-0.1/libusb-compat-0.1.3
Already downloaded: /Users/user/Library/Caches/Homebrew/libusb-compat-0.1.3.tar.bz2
==> ./configure --prefix=/usr/local/Cellar/libusb-compat/0.1.3
==> make install
/usr/local/Cellar/libusb-compat/0.1.3: 11 files, 128K, built in 5 seconds
==> Installing gnupg2
==> Downloading ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-2.0.19.tar.bz2
Already downloaded: /Users/user/Library/Caches/Homebrew/gnupg2-2.0.19.tar.bz2
==> Patching
patching file common/homedir.c
patching file configure
patching file tests/openpgp/Makefile.in
==> ./configure --prefix=/usr/local/Cellar/gnupg2/2.0.19 --enable-symcryptrun --disable-agent --with-
==> make
==> make check
==> make install
/usr/local/Cellar/gnupg2/2.0.19: 82 files, 3.2M, built in 118 seconds

brew link libgcrypt

$ brew link libgcrypt
Warning: Already linked: /usr/local/Cellar/libgcrypt/1.5.0

uninstall dependencies

$ for formula in `brew deps gpg2 `; do brew uninstall $formula; done;
Uninstalling /usr/local/Cellar/dirmngr/1.1.0...
Uninstalling /usr/local/Cellar/gpg-agent/2.0.19...
Uninstalling /usr/local/Cellar/libassuan/2.0.3...
Uninstalling /usr/local/Cellar/libgcrypt/1.5.0...
Uninstalling /usr/local/Cellar/libgpg-error/1.10...
Uninstalling /usr/local/Cellar/libksba/1.2.0...
Uninstalling /usr/local/Cellar/libusb/1.0.8...
Uninstalling /usr/local/Cellar/libusb-compat/0.1.3...
Uninstalling /usr/local/Cellar/pinentry/0.8.1...
Uninstalling /usr/local/Cellar/pkg-config/0.25...
Uninstalling /usr/local/Cellar/pth/2.0.7...