SBT load issue

[alexander-myltsev]

$ cat ~/apps/bin/sbt
SBT_OPTS="-Xms512M -Xmx2G -Xss1M -XX:+CMSClassUnloadingEnabled"
java $SBT_OPTS -jar `dirname $0`/sbt-launch.jar "$@"

$ sbt
[info] Loading global plugins from /home/alex/.sbt/0.13/plugins
[info] Loading project definition from /home/alex/projects/parboiled/macros-boost/FastParsers/project
[info] Compiling 1 Scala source to /home/alex/projects/parboiled/macros-boost/FastParsers/project/target/scala-2.10/sbt-0.13/classes...
[error] /home/alex/projects/parboiled/macros-boost/FastParsers/project/Build.scala:6: value coreDefaultSettings is not a member of object sbt.Defaults
[error]    def commonSettings = Defaults.coreDefaultSettings ++ Seq(
[error]                                  ^
[error] one error found
[error] (compile:compile) Compilation failed
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? r

It works only with extended version of SBT.