javadoc error when ./sbt publish-package

[Gray, Alex]

I'm getting an error when I execute "./sbt publish-package":
[error] javadoc: error - invalid flag: -Xlint:deprecation

I'm using jdk1.7.0_21.

Steps to Reproduce:
git clone https://git-wip-us.apache.org/repos/asf/kafka.git
cd kafka
git checkout -b 0.8 remotes/origin/0.8
./sbt publish-local

Am I doing something wrong?

Thanks!