Program: 54794
Project: 54794
Buggy source:
@Override public void run(final Config conf) throws Exception {
  File spriteElementPath=resolve(get("String_Node_Str").toString());
  if (!spriteElementPath.exists()) {
    throw new FileNotFoundException(spriteElementPath.toString());
  }
  String sha1=new File(spritePath()).getName().replace("String_Node_Str","String_Node_Str" + sha1(spriteElementPath) + "String_Node_Str");
  File uptodate=Paths.get(System.getProperty("String_Node_Str"),"String_Node_Str",sha1).toFile();
  if (uptodate.exists()) {
    log.debug("String_Node_Str",uptodate);
    return;
  }
  Nodejs.run(node -> {
    node.overwrite(conf.hasPath("String_Node_Str") ? conf.getBoolean("String_Node_Str") : false).exec("String_Node_Str",v8 -> {
      Map<String,Object> options=options();
      options.put("String_Node_Str",resolve(spritePath()).toString());
      options.put("String_Node_Str",resolve(cssPath()).toString());
      options.put("String_Node_Str",spriteElementPath.toString());
      log.debug("String_Node_Str",options.entrySet().stream().map(e -> e.getKey() + "String_Node_Str" + e.getValue()).collect(Collectors.joining("String_Node_Str","String_Node_Str","String_Node_Str")));
      v8.add("String_Node_Str",toV8Object(v8,options));
      v8.add("String_Node_Str",new V8Function(v8,(receiver,params) -> {
        String svgPath=params.get(0).toString();
        String pngPath=params.get(1).toString();
        Float w=new Float(params.getDouble(2));
        Float h=new Float(params.getDouble(3));
        V8Function callback=(V8Function)params.get(4);
        Try.run(() -> {
          try (FileReader in=new FileReader(svgPath);OutputStream out=new FileOutputStream(pngPath)){
            PNGTranscoder transcoder=new PNGTranscoder();
            transcoder.addTranscodingHint(PNGTranscoder.KEY_WIDTH,w);
            transcoder.addTranscodingHint(PNGTranscoder.KEY_HEIGHT,h);
            transcoder.transcode(new TranscoderInput(in),new TranscoderOutput(out));
          }
         }
).onSuccess(v -> callback.call(null,null)).onFailure(x -> {
          log.debug("String_Node_Str",x);
          callback.call(null,toV8Array(v8,Arrays.asList(x.getMessage())));
        }
);
        return V8.UNDEFINED;
      }
));
    }
);
  }
);
  log.debug("String_Node_Str",uptodate);
  uptodate.getParentFile().mkdirs();
  Files.createFile(uptodate.toPath());
  uptodate.deleteOnExit();
}

Fixed version (ground truth):
@Override public void run(final Config conf) throws Exception {
  File spriteElementPath=resolve(get("String_Node_Str").toString());
  if (!spriteElementPath.exists()) {
    throw new FileNotFoundException(spriteElementPath.toString());
  }
  File workdir=new File(Try.of(() -> conf.getString("String_Node_Str")).getOrElse(System.getProperty("String_Node_Str")));
  File spritePath=resolve(spritePath());
  File cssPath=resolve(cssPath());
  String sha1=new File(spritePath()).getName().replace("String_Node_Str","String_Node_Str" + sha1(spriteElementPath,spritePath,cssPath) + "String_Node_Str");
  File uptodate=workdir.toPath().resolve("String_Node_Str").resolve(sha1).toFile();
  if (uptodate.exists()) {
    log.info("String_Node_Str",uptodate);
    return;
  }
  Nodejs.run(workdir,node -> {
    node.overwrite(conf.hasPath("String_Node_Str") ? conf.getBoolean("String_Node_Str") : false).exec("String_Node_Str",v8 -> {
      Map<String,Object> options=options();
      options.put("String_Node_Str",spritePath.toString());
      options.put("String_Node_Str",cssPath.toString());
      options.put("String_Node_Str",spriteElementPath.toString());
      log.debug("String_Node_Str",options.entrySet().stream().map(e -> e.getKey() + "String_Node_Str" + e.getValue()).collect(Collectors.joining("String_Node_Str","String_Node_Str","String_Node_Str")));
      v8.add("String_Node_Str",toV8Object(v8,options));
      v8.add("String_Node_Str",new V8Function(v8,(receiver,params) -> {
        String svgPath=params.get(0).toString();
        String pngPath=params.get(1).toString();
        Float w=new Float(params.getDouble(2));
        Float h=new Float(params.getDouble(3));
        V8Function callback=(V8Function)params.get(4);
        Try.run(() -> {
          try (FileReader in=new FileReader(svgPath);OutputStream out=new FileOutputStream(pngPath)){
            PNGTranscoder transcoder=new PNGTranscoder();
            transcoder.addTranscodingHint(PNGTranscoder.KEY_WIDTH,w);
            transcoder.addTranscodingHint(PNGTranscoder.KEY_HEIGHT,h);
            transcoder.transcode(new TranscoderInput(in),new TranscoderOutput(out));
          }
         }
).onSuccess(v -> callback.call(null,null)).onFailure(x -> {
          log.debug("String_Node_Str",x);
          callback.call(null,toV8Array(v8,Arrays.asList(x.getMessage())));
        }
);
        return V8.UNDEFINED;
      }
));
    }
);
  }
);
  log.debug("String_Node_Str",uptodate);
  uptodate.getParentFile().mkdirs();
  try (Stream<Path> sha1files=Files.walk(uptodate.getParentFile().toPath()).filter(it -> it.toString().endsWith("String_Node_Str"))){
    sha1files.forEach(it -> Try.run(() -> Files.delete(it)));
  }
   Files.createFile(uptodate.toPath());
  uptodate.deleteOnExit();
}