Program: 53097
Project: 53097
Buggy source:
@Override public int buildWithClasspath(ExecutionContext context,ProjectFilesystem filesystem,SourcePathResolver resolver,BuildTarget invokingRule,ImmutableList<String> options,ImmutableSortedSet<Path> javaSourceFilePaths,Path pathToSrcsList,Optional<Path> workingDirectory,Optional<Path> usedClassesFile,Optional<StandardJavaFileManagerFactory> fileManagerFactory) throws InterruptedException {
  ImmutableList.Builder<String> command=ImmutableList.builder();
  command.add(pathToJavac.toString());
  command.addAll(options);
  ImmutableList<Path> expandedSources;
  try {
    expandedSources=getExpandedSourcePaths(filesystem,invokingRule,javaSourceFilePaths,workingDirectory);
  }
 catch (  IOException e) {
    throw new HumanReadableException("String_Node_Str",invokingRule,workingDirectory);
  }
  try {
    filesystem.writeLinesToPath(FluentIterable.from(expandedSources).transform(Functions.toStringFunction()).transform(ARGFILES_ESCAPER),pathToSrcsList);
    command.add("String_Node_Str" + pathToSrcsList);
  }
 catch (  IOException e) {
    context.logError(e,"String_Node_Str",pathToSrcsList);
    return 1;
  }
  ProcessBuilder processBuilder=new ProcessBuilder(command.build());
  Map<String,String> env=processBuilder.environment();
  env.clear();
  env.putAll(context.getEnvironment());
  processBuilder.directory(filesystem.getRootPath().toAbsolutePath().toFile());
  int exitCode=-1;
  try {
    Process p=BgProcessKiller.startProcess(processBuilder);
    ProcessExecutor.Result result=context.getProcessExecutor().execute(p);
    exitCode=result.getExitCode();
  }
 catch (  IOException e) {
    e.printStackTrace(context.getStdErr());
    return exitCode;
  }
  return exitCode;
}

Fixed version (ground truth):
@Override public int buildWithClasspath(ExecutionContext context,ProjectFilesystem filesystem,SourcePathResolver resolver,BuildTarget invokingRule,ImmutableList<String> options,ImmutableSet<String> safeAnnotationProcessors,ImmutableSortedSet<Path> javaSourceFilePaths,Path pathToSrcsList,Optional<Path> workingDirectory,Optional<Path> usedClassesFile,Optional<StandardJavaFileManagerFactory> fileManagerFactory) throws InterruptedException {
  ImmutableList.Builder<String> command=ImmutableList.builder();
  command.add(pathToJavac.toString());
  command.addAll(options);
  ImmutableList<Path> expandedSources;
  try {
    expandedSources=getExpandedSourcePaths(filesystem,invokingRule,javaSourceFilePaths,workingDirectory);
  }
 catch (  IOException e) {
    throw new HumanReadableException("String_Node_Str",invokingRule,workingDirectory);
  }
  try {
    filesystem.writeLinesToPath(FluentIterable.from(expandedSources).transform(Functions.toStringFunction()).transform(ARGFILES_ESCAPER),pathToSrcsList);
    command.add("String_Node_Str" + pathToSrcsList);
  }
 catch (  IOException e) {
    context.logError(e,"String_Node_Str",pathToSrcsList);
    return 1;
  }
  ProcessBuilder processBuilder=new ProcessBuilder(command.build());
  Map<String,String> env=processBuilder.environment();
  env.clear();
  env.putAll(context.getEnvironment());
  processBuilder.directory(filesystem.getRootPath().toAbsolutePath().toFile());
  int exitCode=-1;
  try {
    Process p=BgProcessKiller.startProcess(processBuilder);
    ProcessExecutor.Result result=context.getProcessExecutor().execute(p);
    exitCode=result.getExitCode();
  }
 catch (  IOException e) {
    e.printStackTrace(context.getStdErr());
    return exitCode;
  }
  return exitCode;
}