give a bit more context in the error message

Author: RalfJung

src/tools/publish_toolstate.py

@@ -167,9 +167,9 @@ def update_latest(
                 except IOError as e:
                     # network errors will simply end up not creating an issue, but that's better
                     # than failing the entire build job
-                    print("I/O error: {0}".format(e))
+                    print("I/O error when creating issue for status regression: {0}".format(e))
                 except:
-                    print("Unexpected error: {0}".format(sys.exc_info()[0]))
+                    print("Unexpected error when creating issue for status regression: {0}".format(sys.exc_info()[0]))
                     raise
 
             if changed: