Bean destruction exceptions consistently logged at warn level

Closes gh-23200

spring-beans/src/main/java/org/springframework/beans/factory/support/DefaultSingletonBeanRegistry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -571,8 +571,8 @@ public class DefaultSingletonBeanRegistry extends SimpleAliasRegistry implements
 				bean.destroy();
 			}
 			catch (Throwable ex) {
-				if (logger.isInfoEnabled()) {
+				if (logger.isWarnEnabled()) {
-					logger.info("Destroy method on bean with name '" + beanName + "' threw an exception", ex);
+					logger.warn("Destruction of bean with name '" + beanName + "' threw an exception", ex);
 				}
 			}
 		}

spring-beans/src/main/java/org/springframework/beans/factory/support/DisposableBeanAdapter.java

@@ -261,10 +261,10 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 			catch (Throwable ex) {
 				String msg = "Invocation of destroy method failed on bean with name '" + this.beanName + "'";
 				if (logger.isDebugEnabled()) {
-					logger.info(msg, ex);
+					logger.warn(msg, ex);
 				}
 				else {
-					logger.info(msg + ": " + ex);
+					logger.warn(msg + ": " + ex);
 				}
 			}
 		}
@@ -343,14 +343,14 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 			String msg = "Destroy method '" + this.destroyMethodName + "' on bean with name '" +
 					this.beanName + "' threw an exception";
 			if (logger.isDebugEnabled()) {
-				logger.info(msg, ex.getTargetException());
+				logger.warn(msg, ex.getTargetException());
 			}
 			else {
-				logger.info(msg + ": " + ex.getTargetException());
+				logger.warn(msg + ": " + ex.getTargetException());
 			}
 		}
 		catch (Throwable ex) {
-			logger.info("Failed to invoke destroy method '" + this.destroyMethodName +
+			logger.warn("Failed to invoke destroy method '" + this.destroyMethodName +
 					"' on bean with name '" + this.beanName + "'", ex);
 		}
 	}