Program: 48023
Project: 48023
Buggy source:
@Override public boolean perform(AbstractBuild<?,?> build,Launcher launcher,BuildListener listener) throws InterruptedException, IOException {
  EnvVars env=build.getEnvironment(listener);
  env.overrideAll(build.getBuildVariables());
  includes=env.expand(includes);
  final PrintStream logger=listener.getLogger();
  try {
    ReportFactory reportFactory=new ReportFactory(new File(build.getWorkspace().getRemote()),listener);
    reportFactory.createReport();
    logger.println("String_Node_Str");
  }
 catch (  IOException e) {
    logger.println("String_Node_Str" + build.getWorkspace().getRemote() + e.getMessage());
  }
  ArrayList<ModuleInfo> reports=new ArrayList<ModuleInfo>();
  moduleNum=1;
  FilePath actualBuildDirRoot=new FilePath(getJacocoReport(build));
  for (int i=0; i < moduleNum; ++i) {
    ModuleInfo moduleInfo=new ModuleInfo(listener);
    FilePath actualBuildModuleDir=new FilePath(actualBuildDirRoot,"String_Node_Str" + i);
    FilePath actualDestination=new FilePath(actualBuildModuleDir,"String_Node_Str");
    moduleInfo.setClassDir(actualDestination);
    saveCoverageReports(actualDestination,new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str")));
    actualDestination=new FilePath(actualBuildModuleDir,"String_Node_Str");
    moduleInfo.setSrcDir(actualDestination);
    saveCoverageReports(actualDestination,new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str")));
    FilePath execfile=new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str"));
    FilePath seged=actualBuildModuleDir.child("String_Node_Str");
    moduleInfo.setExecFile(seged);
    execfile.copyTo(seged);
    moduleInfo.setTitle(new File(actualBuildModuleDir.getRemote()).getName());
    actualDestination=new FilePath(actualBuildModuleDir,"String_Node_Str");
    saveCoverageReports(actualDestination,new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str")));
    moduleInfo.setGeneratedHTMLsDir(actualDestination);
    reports.add(moduleInfo);
  }
  final JacocoBuildAction action=JacocoBuildAction.load(build,rule,healthReports,listener,reports);
  action.setReports(reports);
  build.getActions().add(action);
  final CoverageReport result=action.getResult();
  if (result == null) {
    logger.println("String_Node_Str");
    build.setResult(Result.FAILURE);
  }
  return true;
}

Fixed version (ground truth):
@Override public boolean perform(AbstractBuild<?,?> build,Launcher launcher,BuildListener listener) throws InterruptedException, IOException {
  EnvVars env=build.getEnvironment(listener);
  env.overrideAll(build.getBuildVariables());
  includes=env.expand(includes);
  final PrintStream logger=listener.getLogger();
  try {
    ReportFactory reportFactory=new ReportFactory(new File(build.getWorkspace().getRemote()),listener);
    reportFactory.createReport();
    logger.println("String_Node_Str");
  }
 catch (  IOException e) {
    logger.println("String_Node_Str" + build.getWorkspace().getRemote() + e.getMessage());
  }
  ArrayList<ModuleInfo> reports=new ArrayList<ModuleInfo>();
  moduleNum=1;
  FilePath actualBuildDirRoot=new FilePath(getJacocoReport(build));
  for (int i=0; i < moduleNum; ++i) {
    ModuleInfo moduleInfo=new ModuleInfo();
    FilePath actualBuildModuleDir=new FilePath(actualBuildDirRoot,"String_Node_Str" + i);
    FilePath actualDestination=new FilePath(actualBuildModuleDir,"String_Node_Str");
    moduleInfo.setClassDir(actualDestination);
    saveCoverageReports(actualDestination,new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str")));
    actualDestination=new FilePath(actualBuildModuleDir,"String_Node_Str");
    moduleInfo.setSrcDir(actualDestination);
    saveCoverageReports(actualDestination,new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str")));
    FilePath execfile=new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str"));
    FilePath seged=actualBuildModuleDir.child("String_Node_Str");
    moduleInfo.setExecFile(seged);
    execfile.copyTo(seged);
    moduleInfo.setTitle(new File(actualBuildModuleDir.getRemote()).getName());
    actualDestination=new FilePath(actualBuildModuleDir,"String_Node_Str");
    saveCoverageReports(actualDestination,new FilePath(new File(build.getWorkspace().getRemote(),"String_Node_Str")));
    moduleInfo.setGeneratedHTMLsDir(actualDestination);
    reports.add(moduleInfo);
  }
  final JacocoBuildAction action=JacocoBuildAction.load(build,rule,healthReports,listener,reports);
  action.setReports(reports);
  build.getActions().add(action);
  final CoverageReport result=action.getResult();
  if (result == null) {
    logger.println("String_Node_Str");
    build.setResult(Result.FAILURE);
  }
  return true;
}