diff --git a/deploy/packer/app/scripts/deploy.sh b/deploy/packer/app/scripts/deploy.sh
index ba2be150..bdffdd12 100644
--- a/deploy/packer/app/scripts/deploy.sh
+++ b/deploy/packer/app/scripts/deploy.sh
@@ -16,7 +16,7 @@ relengapi_proxy_version=2.3.1
 taskcluster_proxy_version=5.1.0
 livelog_version=4
 dind_service_version=4.0
-worker_runner_version=0.3.2
+worker_runner_version=0.3.3
 
 ## Get recent CA bundle for papertrail
 sudo curl -o /etc/papertrail-bundle.pem https://papertrailapp.com/tools/papertrail-bundle.pem
diff --git a/src/lib/task.js b/src/lib/task.js
index 543a329f..87c48ef2 100644
--- a/src/lib/task.js
+++ b/src/lib/task.js
@@ -893,7 +893,7 @@ class Task extends EventEmitter {
     } catch (e) {
       let error = fmtErrorLog('Docker configuration could not be ' +
         'created.  This may indicate an authentication error when validating ' +
-        'scopes necessary for running the task. \n %s', e);
+        'scopes necessary for running the task. \n %s', e.stack);
       return await this.abortRun(error);
     }