fix: improve error visibility in streaming and manager

lib/crewai/src/crewai/crew.py

@@ -1492,6 +1492,7 @@ def _run_hierarchical_process(self) -> CrewOutput:
         return self._execute_tasks(self.tasks)
 
     def _create_manager_agent(self) -> None:
+        """Create or configure the manager agent for hierarchical execution."""
         if self.manager_agent is not None:
             self.manager_agent.allow_delegation = True
             manager = self.manager_agent
@@ -1502,7 +1503,7 @@ def _create_manager_agent(self) -> None:
                     color="bold_yellow",
                 )
                 manager.tools = []
-                raise Exception("Manager agent should not have tools")
+                # tools are stripped after warning — see set_manager_agent()
         else:
             self.manager_llm = create_llm(self.manager_llm)
             i18n = get_i18n(prompt_file=self.prompt_file)

lib/crewai/src/crewai/llm.py

@@ -1591,7 +1591,9 @@ async def _ahandle_streaming_response(
                                             )
 
                 except (AttributeError, KeyError, IndexError, TypeError):
-                    pass
+                    logging.getLogger(__name__).debug(
+                        "Failed to parse streaming chunk", exc_info=True
+                    )
 
                 if chunk_content:
                     full_response += chunk_content

lib/crewai/tests/test_crew.py

@@ -2878,7 +2878,9 @@ def test_manager_agent_in_agents_raises_exception(researcher, writer):
 
 
 @pytest.mark.vcr()
-def test_manager_agent_with_tools_raises_exception(researcher, writer):
+def test_manager_agent_with_tools_logs_warning_and_strips_tools(researcher, writer):
+    """Test that manager agent tools are stripped after a warning."""
+
     @tool
     def testing_tool(first_number: int, second_number: int) -> int:
         """Useful for when you need to multiply two numbers together."""
@@ -2904,8 +2906,16 @@ def testing_tool(first_number: int, second_number: int) -> int:
         tasks=[task],
     )
 
-    with pytest.raises(Exception, match="Manager agent should not have tools"):
-        crew.kickoff()
+    with patch("crewai.crew.Logger.log", autospec=True) as log:
+        crew._create_manager_agent()
+
+    log.assert_called_once_with(
+        crew._logger,
+        "warning",
+        "Manager agent should not have tools",
+        color="bold_yellow",
+    )
+    assert manager.tools == []
 
 
 @pytest.mark.xfail(