fix(aioredis): handle all BaseException, not Exception in _finish_span (backport #4193) (#4196)

This is an automatic backport of pull request #4193 done by [Mergify](https://mergify.com).


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Author: mergify[bot]

ddtrace/contrib/aioredis/patch.py

@@ -140,11 +140,12 @@ def traced_13_execute_command(func, instance, args, kwargs):
     def _finish_span(future):
         try:
             # Accessing the result will raise an exception if:
-            #   - The future was cancelled
+            #   - The future was cancelled (CancelledError)
             #   - There was an error executing the future (`future.exception()`)
             #   - The future is in an invalid state
             future.result()
-        except Exception:
+        # CancelledError exceptions extend from BaseException as of Python 3.8, instead of usual Exception
+        except BaseException:
             span.set_exc_info(*sys.exc_info())
         finally:
             span.finish()

releasenotes/notes/fix-aioredis-catch-cancellederror-223e8bb3d1aea94f.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    aioredis: added exception handling for `CancelledError` in the aioredis integration.