Replace printStackTrace with proper logging in LogbackUtils

Issue: Replace printStackTrace with proper logging in LogbackUtils

Problem

The LogbackUtils.destroy() method in sandbox-core uses cause.printStackTrace() to handle exceptions, which:

• Bypasses the logging framework (SLF4J/Logback)
• Outputs directly to System.err instead of configured log appenders
• Is inconsistent with the init() method in the same class, which properly uses logger.warn()

Location

File: sandbox-core/src/main/java/com/alibaba/jvm/sandbox/core/util/LogbackUtils.java Method: destroy() Line: 56

Current Behavior

public static void destroy() {
    try {
        ((LoggerContext) LoggerFactory.getILoggerFactory()).stop();
    } catch (Throwable cause) {
        cause.printStackTrace();  // <-- Problem
    }
}

Expected Behavior

Should use proper logging like the init() method does:

public static void destroy() {
    final Logger logger = LoggerFactory.getLogger(LogbackUtils.class);
    try {
        ((LoggerContext) LoggerFactory.getILoggerFactory()).stop();
    } catch (Throwable cause) {
        logger.warn("destroy logback failed", cause);  // <-- Proper logging
    }
}

Impact

• Improves consistency within the same class
• Ensures exceptions are properly logged through the configured logging framework
• Makes debugging easier in production environments

Solution

Replace printStackTrace() with logger.warn() using the existing SLF4J logger.