diff --git a/swh/archiver/checker.py b/swh/archiver/checker.py
--- a/swh/archiver/checker.py
+++ b/swh/archiver/checker.py
@@ -56,8 +56,8 @@
         while True:
             try:
                 self.run()
-            except:
-                pass
+            except Exception as exc:
+                logging.error('Unexpected error {}'.format(exc))
 
     def run(self):
         """ Check a batch of content.