Workaround for 'Error: The child process has exited unexpectedly.' bug

src/runner/rmq.ts

@@ -40,13 +40,25 @@ export async function waitForTask(handle: (task: RPCRequest) => Promise<any>) {
         }
         response({ type: RPCReplyType.Started });
 
+        while (true) {
             try {
                 const request = msgpack.decode(msg.content) as RPCRequest;
                 const result = await handle(request);
                 response({ type: RPCReplyType.Finished, result: result });
+                break;
             } catch (err) {
-            winston.warn(`Failed to run task ${msg.properties.correlationId}: ${err.toString()}, ${err.stack}`);
+                let errorMessage = `Failed to run task ${msg.properties.correlationId}: ${err.toString()}, ${err.stack}`;
+                winston.warn(errorMessage);
+
+                // Only retry on 'Error: The child process has exited unexpectedly.'
+                if (errorMessage.indexOf('Error: The child process has exited unexpectedly.') !== -1) {
+                    winston.warn('Retrying.');
+                    continue;
+                }
+
                 response({ type: RPCReplyType.Error, error: err.toString() });
+                break;
+            }
         }
 
         channel.ack(msg);