CI devug

Author: benjeffery

python/tskit/jit/numba.py

@@ -22,7 +22,11 @@ def jitdataclass(cls):
     except AttributeError:
         # __replace__ is not available in Python < 3.10
         pass
-    del dc_cls.__match_args__
+    try:
+        del dc_cls.__match_args__
+    except AttributeError:
+        # __match_args__ is not available in Python < 3.10
+        pass
     return numba.experimental.jitclass(dc_cls)