[execution][local] Properly handle failure on setup and prepare

beat/core/execution/local.py

@@ -284,7 +284,12 @@ class LocalExecutor(BaseExecutor):
         self.runner = self.algorithm.runner()
 
         retval = self.runner.setup(self.data['parameters'])
-        retval = self.runner.prepare(self.data_loaders)
+        if not retval:
+            raise RuntimeError("Algorithm setup failed")
+
+        prepared = self.runner.prepare(self.data_loaders)
+        if not prepared:
+            raise RuntimeError("Algorithm prepare failed")
 
         if not self.input_list or not self.output_list:
             raise RuntimeError("I/O for execution block has not yet been set up")