Program: 71226
Project: 71226
Buggy source:
@Override public void onEnable(){
  this.deferMap=new HashMap<>();
  for (  final World world : Bukkit.getWorlds()) {
    world.setAutoSave(false);
    world.setTime(100);
    world.setGameRuleValue("String_Node_Str","String_Node_Str");
  }
  REMOTE=System.getenv("String_Node_Str");
  REMOTE=REMOTE == null ? "String_Node_Str" : REMOTE;
  String portStr=System.getenv("String_Node_Str");
  PORT=portStr == null ? 4445 : Integer.parseInt(portStr);
  try {
    clientSocket=new Socket(REMOTE,PORT);
    out=new PrintWriter(clientSocket.getOutputStream(),true);
    in=new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
    System.out.println("String_Node_Str");
    Thread socketReader=new Thread(() -> {
      String line;
      while (clientSocket.isConnected()) {
        try {
          line=in.readLine();
          if (line == null)           throw new RuntimeException("String_Node_Str");
          System.out.println("String_Node_Str" + line);
class RPCTask implements Runnable {
            String rpc;
            RPCTask(            String rpc){
              this.rpc=rpc;
            }
            public void run(){
              RPCHandler(rpc);
            }
          }
          Bukkit.getScheduler().scheduleSyncDelayedTask(this,new RPCTask(line),0);
        }
 catch (        IOException e) {
        }
      }
    }
);
    socketReader.start();
  }
 catch (  Exception e) {
    System.out.println("String_Node_Str" + e.toString());
  }
  System.out.println("String_Node_Str");
  this.getCommand("String_Node_Str").setExecutor(new SwapCommand(out));
  this.getCommand("String_Node_Str").setExecutor(new StateCommand(this));
  this.getCommand("String_Node_Str").setExecutor(new FlusherCommand(this));
  getServer().getPluginManager().registerEvents(this,this);
}

Fixed version (ground truth):
@Override public void onEnable(){
  this.deferMap=new HashMap<>();
  for (  final World world : Bukkit.getWorlds()) {
    world.setAutoSave(false);
    world.setTime(100);
    world.setGameRuleValue("String_Node_Str","String_Node_Str");
  }
  REMOTE=System.getenv("String_Node_Str");
  REMOTE=REMOTE == null ? "String_Node_Str" : REMOTE;
  String portStr=System.getenv("String_Node_Str");
  PORT=portStr == null ? 4445 : Integer.parseInt(portStr);
  try {
    clientSocket=new Socket(REMOTE,PORT);
    out=new PrintWriter(clientSocket.getOutputStream(),true);
    in=new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
    System.out.println("String_Node_Str");
    Thread socketReader=new Thread(() -> {
      String line;
      while (clientSocket.isConnected()) {
        try {
          line=in.readLine();
          if (line == null)           throw new RuntimeException("String_Node_Str");
class RPCTask implements Runnable {
            String rpc;
            RPCTask(            String rpc){
              this.rpc=rpc;
            }
            public void run(){
              RPCHandler(rpc);
            }
          }
          Bukkit.getScheduler().scheduleSyncDelayedTask(this,new RPCTask(line),0);
        }
 catch (        IOException e) {
        }
      }
    }
);
    socketReader.start();
  }
 catch (  Exception e) {
    System.out.println("String_Node_Str" + e.toString());
  }
  System.out.println("String_Node_Str");
  this.getCommand("String_Node_Str").setExecutor(new SwapCommand(out));
  this.getCommand("String_Node_Str").setExecutor(new StateCommand(this));
  this.getCommand("String_Node_Str").setExecutor(new FlusherCommand(this));
  getServer().getPluginManager().registerEvents(this,this);
}