Fixed being killed by systemd for not flushing block buffer in time.

main.rb

@@ -4,8 +4,18 @@
 # time: 2026-06-07
 # license: All rights received.
 
-require_relative 'server_status_detector'
+# main.rb 顶部添加
+begin
+  # 原有代码
+rescue => e
+  # 强制输出到stderr
+  $stderr.puts "[CRITICAL] Unhandled exception: #{e.message}"
+  $stderr.puts e.backtrace.join("\n")
+  exit 1
+end
+
 require_relative 'method_executor' # 日志系统在此时初始化
+require_relative 'server_status_detector'
 
 MethodExecutor.record("info", "mainloop", "MineSentinel started, entering mainloop.")
 
@@ -30,6 +40,6 @@ end
 
 
 while true
-  sleep 10
+  sleep 1.5
   main
 end

method_executor.rb

@@ -16,6 +16,8 @@ class MethodExecutor
   @@rst_counter = 0
   # Initialize the standard log system.
   @@logger = Logger.new(STDOUT) # This script will be launched as a systemd server.
+  STDOUT.sync = true
+  STDERR.sync = true
   # Fetch the environmental variable and convert it into log level.
   @@logger.level = case ENV["LOG_LEVEL"] # @为单个实例（半生不熟的概念，貌似是在不同的空间独立创建），@@为共享同一个
                       when nil # Default config.