diff --git a/jetty-client/src/test/java/org/eclipse/jetty/client/ssl/SslBytesTest.java b/jetty-client/src/test/java/org/eclipse/jetty/client/ssl/SslBytesTest.java
index e66edf43887..8e7c61eecfc 100644
--- a/jetty-client/src/test/java/org/eclipse/jetty/client/ssl/SslBytesTest.java
+++ b/jetty-client/src/test/java/org/eclipse/jetty/client/ssl/SslBytesTest.java
@@ -150,7 +150,10 @@ public abstract class SslBytesTest
             }
             catch (IOException x)
             {
-                x.printStackTrace();
+                logger.warn(x.getClass() + ": " + x.getMessage());
+
+                if(logger.isDebugEnabled())
+                    logger.debug(x);
             }
         }
 
diff --git a/jetty-io/src/test/java/org/eclipse/jetty/io/SocketChannelEndPointTest.java b/jetty-io/src/test/java/org/eclipse/jetty/io/SocketChannelEndPointTest.java
index 0645430f1a4..703806b8afd 100644
--- a/jetty-io/src/test/java/org/eclipse/jetty/io/SocketChannelEndPointTest.java
+++ b/jetty-io/src/test/java/org/eclipse/jetty/io/SocketChannelEndPointTest.java
@@ -835,7 +835,10 @@ public class SocketChannelEndPointTest
             }
             catch (InterruptedException | EofException e)
             {
-                LOG.info(e);
+                if(LOG.isDebugEnabled())
+                    LOG.debug(e);
+                else
+                    LOG.info(e.getClass().getName());
             }
             catch (Exception e)
             {
diff --git a/jetty-websocket/javax-websocket-server-impl/src/test/java/org/eclipse/jetty/websocket/jsr356/server/TrackingSocket.java b/jetty-websocket/javax-websocket-server-impl/src/test/java/org/eclipse/jetty/websocket/jsr356/server/TrackingSocket.java
index 6343af16033..d3f81dff5ec 100644
--- a/jetty-websocket/javax-websocket-server-impl/src/test/java/org/eclipse/jetty/websocket/jsr356/server/TrackingSocket.java
+++ b/jetty-websocket/javax-websocket-server-impl/src/test/java/org/eclipse/jetty/websocket/jsr356/server/TrackingSocket.java
@@ -49,7 +49,11 @@ public abstract class TrackingSocket
     
     protected void addError(Throwable t)
     {
-        LOG.warn(t);
+        LOG.warn(t.getClass() + ": " + t.getMessage());
+
+        if(LOG.isDebugEnabled())
+            LOG.debug(t);
+
         errorQueue.offer(t);
     }
 
diff --git a/tests/test-http-client-transport/src/test/java/org/eclipse/jetty/http/client/ServerTimeoutsTest.java b/tests/test-http-client-transport/src/test/java/org/eclipse/jetty/http/client/ServerTimeoutsTest.java
index 0784bc77f2b..8a8f6bae1c9 100644
--- a/tests/test-http-client-transport/src/test/java/org/eclipse/jetty/http/client/ServerTimeoutsTest.java
+++ b/tests/test-http-client-transport/src/test/java/org/eclipse/jetty/http/client/ServerTimeoutsTest.java
@@ -55,6 +55,7 @@ import org.eclipse.jetty.server.handler.AbstractHandler;
 import org.eclipse.jetty.util.Callback;
 import org.eclipse.jetty.util.IO;
 import org.eclipse.jetty.util.log.StacklessLogging;
+import org.eclipse.jetty.util.thread.QueuedThreadPool;
 import org.hamcrest.Matchers;
 import org.junit.Assert;
 import org.junit.Assume;
@@ -430,7 +431,7 @@ public class ServerTimeoutsTest extends AbstractTest
         });
         setServerIdleTimeout(idleTimeout);
 
-        try (StacklessLogging stackless = new StacklessLogging(HttpChannel.class))
+        try (StacklessLogging stackless = new StacklessLogging(HttpChannel.class, QueuedThreadPool.class))
         {
             DeferredContentProvider contentProvider = new DeferredContentProvider();
             CountDownLatch resultLatch = new CountDownLatch(1);