Program: 84707
Project: 84707
Buggy source:
@Override public boolean perform(AbstractBuild build,Launcher launcher,BuildListener listener) throws IOException, InterruptedException {
  EnvVars envVars=build.getEnvironment(listener);
  String artifact=envVars.expand(this.artifact);
  String metadata=envVars.expand(this.metadata);
  String app=envVars.expand(this.app);
  String ver=envVars.expand(this.ver);
  if (deployOrUpdate != null)   deployOrUpdate.setContextPathWithEnvVarReplaced(envVars.expand(deployOrUpdate.contextPath));
  FilePath deployableFile;
  FilePath metadataFilePath=null;
  if (build.getWorkspace().isRemote()) {
    new ArtifactArchiver(artifact,"String_Node_Str",true).perform(build,launcher,listener);
    deployableFile=new FilePath(build.getArtifactsDir()).child(artifact);
    if (metadata != null)     metadataFilePath=new FilePath(build.getArtifactsDir()).child(metadata);
  }
 else {
    deployableFile=build.getWorkspace().child(artifact);
    if (metadata != null)     metadataFilePath=build.getWorkspace().child(metadata);
  }
  if (!deployableFile.exists()) {
    listener.getLogger().println("String_Node_Str");
    return false;
  }
  if (metadataFilePath != null) {
    if (!metadataFilePath.exists()) {
      listener.getLogger().println("String_Node_Str" + metadataFilePath.getRemote());
      return false;
    }
  }
  CommandCenterFactory commandCenterFactory=getCommandCenterFactory();
  PluginUtil pluginUtil=new PluginUtil((PluginLogger)new JenkinsLogger(listener));
  if (!pluginUtil.initCommandCenter(commandCenterFactory))   return false;
  File metadataFile=null;
  if (metadataFilePath != null)   metadataFile=new File(metadataFilePath.getRemote());
  String contextPath="String_Node_Str";
  UpdateStrategies updateStrategies=null;
  if (deployOrUpdate != null) {
    contextPath=deployOrUpdate.contextPath;
    updateStrategies=(UpdateStrategies)deployOrUpdate.updateStrategies;
  }
  if (!pluginUtil.perform(new File(deployableFile.getRemote()),metadataFile,contextPath,this.undeploy != null,updateStrategies,getDeployableServers(),app,ver))   build.setResult(Result.FAILURE);
  return true;
}

Fixed version (ground truth):
@Override public boolean perform(AbstractBuild build,Launcher launcher,BuildListener listener) throws IOException, InterruptedException {
  EnvVars envVars=build.getEnvironment(listener);
  String artifact=envVars.expand(this.artifact);
  String metadata=envVars.expand(this.metadata);
  String app=envVars.expand(this.app);
  String ver=envVars.expand(this.ver);
  if (deployOrUpdate != null)   deployOrUpdate.setContextPathWithEnvVarReplaced(envVars.expand(deployOrUpdate.contextPath));
  FilePath deployableFile;
  FilePath metadataFilePath=null;
  if (build.getWorkspace().isRemote()) {
    new ArtifactArchiver(artifact,"String_Node_Str",true).perform(build,launcher,listener);
    deployableFile=new FilePath(build.getArtifactsDir()).child(artifact);
    if (metadata != null)     metadataFilePath=new FilePath(build.getArtifactsDir()).child(metadata);
  }
 else {
    deployableFile=build.getWorkspace().child(artifact);
    if (metadata != null)     metadataFilePath=build.getWorkspace().child(metadata);
  }
  if (!deployableFile.exists()) {
    listener.getLogger().println("String_Node_Str");
    return false;
  }
  if (metadataFilePath != null) {
    if (!metadataFilePath.exists()) {
      listener.getLogger().println("String_Node_Str" + metadataFilePath.getRemote());
      return false;
    }
  }
  CommandCenterFactory commandCenterFactory=getCommandCenterFactory();
  PluginUtil pluginUtil=new PluginUtil(commandCenterFactory,(PluginLogger)new JenkinsLogger(listener));
  File metadataFile=null;
  if (metadataFilePath != null)   metadataFile=new File(metadataFilePath.getRemote());
  String contextPath="String_Node_Str";
  UpdateStrategies updateStrategies=null;
  if (deployOrUpdate != null) {
    contextPath=deployOrUpdate.contextPath;
    updateStrategies=(UpdateStrategies)deployOrUpdate.updateStrategies;
  }
  if (!pluginUtil.perform(new File(deployableFile.getRemote()),metadataFile,contextPath,this.undeploy != null,updateStrategies,getDeployableServers(),app,ver))   build.setResult(Result.FAILURE);
  return true;
}