ant与cvs 使用错误解决方案求助！！

我怎么看都觉得流程是对的， 可一运行出错拉！ 请各位指点一下:
  <!-- ================================= 
  target: initpass  
  ================================= -->

  <target name="initpass">
  <echo>---------->>>>>look cvs</echo>
  <cvspass cvsroot="${cvs.root}" password="${cvs.password}" passfile="ant-cvs.cvspass"></cvspass>
  <echo>---------------->>>success</echo>
  </target>

<!-- ================================= 
  target: name  
  ================================= -->

  <target name="checkout" depends="initpass" > 
  <echo>--->>>come </echo>  
  <cvs cvsroot="${cvs.root}"
  command="checkout"
  cvsrsh="ssh"
  dest="${basedir}${src}"  
  package="${projectName}"  
  passfile="ant-cvs.cvspass"
failonerror="yes"
  />  
  <echo>---------success</echo>
  </target>

 运行错误为：
Buildfile: F:\完整项目保存处\AjaxTest\build.xml
initpass:
  [echo] ---------->>>>>look cvs
  [echo] ---------------->>>success
checkout:
  [echo] --->>>come 

BUILD FAILED
F:\完整项目保存处\AjaxTest\build.xml:121: java.io.IOException: CreateProcess: cvs -d:pserver:[email protected]:/CvsWorkSpace checkout AjaxTest error=2

Total time: 453 milliseconds