Update hk.py

chipforge/firmware/interface/hk.py

@@ -83,7 +83,10 @@ class Claims:
   def write_back(self):
     raw_claims = [{'path': claim.path, 'owner': claim.owner, 'expires': claim.expires.strftime('%Y-%m-%dT%H:%M:%S')} for claim in self.claims]
     with open(self.path, 'w+') as file:
-      os.chmod(self.path, 0o777)
+      try:
+        os.chmod(self.path, 0o777)
+      except:
+        pass
       json.dump(raw_claims, file)
 
   def claim(self, device: HKSpiBase, fail_soft=False, override=False):