diff --git a/nova/scheduler/filters/trusted_filter.py b/nova/scheduler/filters/trusted_filter.py
index bb1962ebe..522a68096 100644
--- a/nova/scheduler/filters/trusted_filter.py
+++ b/nova/scheduler/filters/trusted_filter.py
@@ -153,7 +153,7 @@ class AttestationService(object):
                 return httplib.OK, res
             return status_code, None
 
-        except (socket.error, IOError) as e:
+        except (socket.error, IOError):
             return IOError, None
 
     def _request(self, cmd, subcmd, hosts):
diff --git a/nova/service.py b/nova/service.py
index 0377ba44b..715040323 100644
--- a/nova/service.py
+++ b/nova/service.py
@@ -286,7 +286,7 @@ class Service(service.Service):
         """Perform basic config checks before starting processing."""
         # Make sure the tempdir exists and is writable
         try:
-            with utils.tempdir() as tmpdir:
+            with utils.tempdir():
                 pass
         except Exception as e:
             LOG.error(_('Temporary directory is invalid: %s'), e)