diff --git a/java/client/src/org/openqa/selenium/remote/RemoteWebDriverBuilder.java b/java/client/src/org/openqa/selenium/remote/RemoteWebDriverBuilder.java
index <HASH>..<HASH> 100644
--- a/java/client/src/org/openqa/selenium/remote/RemoteWebDriverBuilder.java
+++ b/java/client/src/org/openqa/selenium/remote/RemoteWebDriverBuilder.java
@@ -298,6 +298,7 @@ public class RemoteWebDriverBuilder {
                 try {
                   return bs.build();
                 } catch (Throwable e) {
+                  e.printStackTrace();
                   return null;
                 }
               })
[java] Adding some debug trace to figure out why W3CRemoteDriverTest.shouldPreferMarionette fails on travis