Ant problem using the Jazz Build Engine

print 'hello world'
	
	
	

<project name="placeholder project" default="hello">
	<target name="hello">
		<exec executable="python" failonerror="true">
			<arg line="hello.py"/>
		</exec>
	</target>

	<target name="run">
		<antcall target="hello"/>
	</target>
</project>
	
	
	

2016-07-12 13:16:39 [Jazz build engine] 
2016-07-12 13:16:39 [Jazz build engine] Substituted the following build property variables:
2016-07-12 13:16:39 [Jazz build engine] 	team.scm.fetchDestination = ${build_dir}   -->   team.scm.fetchDestination = ${homedir}/hello
2016-07-12 13:16:39 [Jazz build engine] 	buildfile = ${build_dir}/Tools/builds/hello_world/build.xml   -->   buildfile = ${homedir}/hello/Tools/builds/hello_world/build.xml
2016-07-12 13:16:39 [Jazz build engine] 	build_dir = ${homedir}/hello   -->   build_dir = /home/builduser/workspace_tools-dev6-build01/hello
2016-07-12 13:16:39 [Jazz build engine] 	team.scm.fetchDestination = ${homedir}/hello   -->   team.scm.fetchDestination = /home/builduser/workspace_tools-dev6-build01/hello
2016-07-12 13:16:39 [Jazz build engine] 	buildfile = ${homedir}/hello/Tools/builds/hello_world/build.xml   -->   buildfile = /home/builduser/workspace_tools-dev6-build01/hello/Tools/builds/hello_world/build.xml
2016-07-12 13:16:39 [Jazz build engine] 
2016-07-12 13:16:39 [Jazz build engine] 
2016-07-12 13:16:39 [Jazz build engine] Substituted the following configuration element property variables:
2016-07-12 13:16:39 [Jazz build engine] 	com.ibm.team.build.ant : com.ibm.team.build.ant.buildFile = ${buildfile}   -->   com.ibm.team.build.ant.buildFile = /home/builduser/workspace_tools-dev6-build01/hello/Tools/builds/hello_world/build.xml
2016-07-12 13:16:39 [Jazz build engine] 
2016-07-12 13:16:39 [Jazz build engine] running on host: ***CENSORED***
2016-07-12 13:16:39 [Jazz build engine] Should build occur?
2016-07-12 13:16:39 [Jazz build engine] Yes: Always build a user initiated request.
2016-07-12 13:16:39 [Jazz build engine] Invoking pre-build participant "com.ibm.team.build.jazzscm"
2016-07-12 13:16:39 [Jazz build engine] Deleting fetch destination "/home/builduser/workspace_tools-dev6-build01/hello" before fetching ...
2016-07-12 13:16:39 [Jazz build engine] Fetching files to fetch destination "/home/builduser/workspace_tools-dev6-build01/hello" ...
2016-07-12 13:16:42 [Jazz build engine] Invoking build participant "com.ibm.team.build.ant"
Buildfile: /home/builduser/workspace_tools-dev6-build01/hello/Tools/builds/hello_world/build.xml


hello:


BUILD FAILED
java.lang.NoSuchMethodError: org/apache/tools/ant/launch/Locator.fromJarURI(Ljava/lang/String;)Ljava/lang/String;
	at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:256)
	at org.apache.tools.ant.helper.ProjectHelper2.parseUnknownElement(ProjectHelper2.java:131)
	at org.apache.tools.ant.helper.ProjectHelper2.parseAntlibDescriptor(ProjectHelper2.java:111)
	at org.apache.tools.ant.taskdefs.Antlib.createAntlib(Antlib.java:94)
	at org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:425)
	at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:277)
	at org.apache.tools.ant.ComponentHelper.checkNamespace(ComponentHelper.java:874)
	at org.apache.tools.ant.ComponentHelper.getDefinition(ComponentHelper.java:307)
	at org.apache.tools.ant.ComponentHelper.createComponent(ComponentHelper.java:284)
	at org.apache.tools.ant.ComponentHelper.createComponent(ComponentHelper.java:263)
	at org.apache.tools.ant.UnknownElement.makeObject(UnknownElement.java:430)
	at org.apache.tools.ant.UnknownElement.maybeConfigure(UnknownElement.java:164)
	at org.apache.tools.ant.Task.perform(Task.java:347)
	at org.apache.tools.ant.Target.execute(Target.java:435)
	at org.apache.tools.ant.Target.performTasks(Target.java:456)
	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1405)
	at org.apache.tools.ant.Project.executeTarget(Project.java:1376)
	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
	at org.apache.tools.ant.Project.executeTargets(Project.java:1260)
	at org.apache.tools.ant.Main.runBuild(Main.java:853)
	at org.apache.tools.ant.Main.startAnt(Main.java:235)
	at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
	at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)


Total time: 0 seconds
Build failed. Exit value was 1.