Don't have message in Exceptions. Just str them directly.

kernel/modelverse_jit/jit.py

@@ -506,7 +506,7 @@ class ModelverseJit(object):
                     del self.jitted_entry_points[dep]
 
             failure_message = "%s (function '%s' at %d)" % (
-                exception.message, function_name, body_id)
+                str(exception), function_name, body_id)
             if self.jit_success_log_function is not None:
                 self.jit_success_log_function('JIT compilation failed: %s' % failure_message)
             raise JitCompilationFailedException(failure_message)