diff --git a/tailbone/views/luigi.py b/tailbone/views/luigi.py
index dfc68d2f..054f24ee 100644
--- a/tailbone/views/luigi.py
+++ b/tailbone/views/luigi.py
@@ -118,6 +118,7 @@ class LuigiTaskView(MasterView):
             self.request.session.flash("Luigi scheduler has been restarted.")
 
         except Exception as error:
+            log.warning("restart failed", exc_info=True)
             self.request.session.flash(simple_error(error), 'error')
 
         return self.redirect(self.request.get_referrer(