increase an unable message to warning - this is an exceptional circumstance to know about (even if we think that the follow on SIGKILL will correctly recover...)

Author: benclifford

parsl/executors/high_throughput/executor.py

@@ -831,7 +831,7 @@ def shutdown(self, timeout: float = 10.0):
         try:
             self.interchange_proc.wait(timeout=timeout)
         except subprocess.TimeoutExpired:
-            logger.info("Unable to terminate Interchange process; sending SIGKILL")
+            logger.warning("Unable to terminate Interchange process; sending SIGKILL")
             self.interchange_proc.kill()
 
         logger.info("Closing ZMQ pipes")