build.xml tries to fetch maven-ant-tasks-2.0.8.jar, which does not exist anymore, the correct version is maven-ant-tasks-2.0.9.jar
maven-ant:
[get] Getting: http://www.ibiblio.org/pub/mirrors/apache/maven/binaries/maven-ant-tasks-2.0.8.jar
[get] To: C:\Documents and Settings\username\.m2\maven-ant-tasks-2.0.8.jar
[get] Error opening connection java.io.FileNotFoundException: http://mirrors.ibiblio.org/pub/mirrors/apache/maven/binaries/maven-ant-tasks-2.0.8.jar
[get] Error opening connection java.io.FileNotFoundException: http://mirrors.ibiblio.org/pub/mirrors/apache/maven/binaries/maven-ant-tasks-2.0.8.jar
[get] Error opening connection java.io.FileNotFoundException: http://mirrors.ibiblio.org/pub/mirrors/apache/maven/binaries/maven-ant-tasks-2.0.8.jar
[get] Can't get http://www.ibiblio.org/pub/mirrors/apache/maven/binaries/maven-ant-tasks-2.0.8.jar to C:\Documents and Settings\username\.m2\maven-ant-tasks-2.0.8.jar
BUILD FAILED