scramble make errors?

gistfile1.txt

4&/1z [jehan:~/go/src/scramble] master(+0/-0)+ 1 ± make
go get scramble
# cd .; hg clone -U https://code.google.com/p/go.crypto /Users/jehan/go/src/scramble/src/code.google.com/p/go.crypto
abort: couldn't find mercurial libraries in [/usr/platlib/Library/Python/2.7/site-packages /usr/local/bin /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC /Library/Python/2.7/site-packages]
(check your install and PYTHONPATH)
package code.google.com/p/go.crypto/openpgp: exit status 255
package code.google.com/p/go.crypto/openpgp/armor
	imports code.google.com/p/go.crypto/openpgp/armor
	imports code.google.com/p/go.crypto/openpgp/armor: cannot find package "code.google.com/p/go.crypto/openpgp/armor" in any of:
	/usr/local/Cellar/go/1.1.2/libexec/src/pkg/code.google.com/p/go.crypto/openpgp/armor (from $GOROOT)
	/Users/jehan/go/src/scramble/src/code.google.com/p/go.crypto/openpgp/armor (from $GOPATH)
package code.google.com/p/go.crypto/openpgp/armor
	imports code.google.com/p/go.crypto/openpgp/packet
	imports code.google.com/p/go.crypto/openpgp/packet
	imports code.google.com/p/go.crypto/openpgp/packet: cannot find package "code.google.com/p/go.crypto/openpgp/packet" in any of:
	/usr/local/Cellar/go/1.1.2/libexec/src/pkg/code.google.com/p/go.crypto/openpgp/packet (from $GOROOT)
	/Users/jehan/go/src/scramble/src/code.google.com/p/go.crypto/openpgp/packet (from $GOPATH)
package code.google.com/p/go.crypto/openpgp/armor
	imports code.google.com/p/go.crypto/openpgp/packet
	imports code.google.com/p/go.crypto/ripemd160
	imports code.google.com/p/go.crypto/ripemd160
	imports code.google.com/p/go.crypto/ripemd160: cannot find package "code.google.com/p/go.crypto/ripemd160" in any of:
	/usr/local/Cellar/go/1.1.2/libexec/src/pkg/code.google.com/p/go.crypto/ripemd160 (from $GOROOT)
	/Users/jehan/go/src/scramble/src/code.google.com/p/go.crypto/ripemd160 (from $GOPATH)
make: *** [build] Error 1