Don't run schedules when a server is suspended or installing; closes #4008

app/Jobs/Schedule/RunTaskJob.php

@@ -61,6 +61,16 @@ class RunTaskJob extends Job implements ShouldQueue
         }
 
         $server = $this->task->server;
+        // If we made it to this point and the server status is not null it means the
+        // server was likely suspended or marked as reinstalling after the schedule
+        // was queued up. Just end the task right now — this should be a very rare
+        // condition.
+        if (!is_null($server->status)) {
+            $this->failed();
+
+            return;
+        }
+
         // Perform the provided task against the daemon.
         try {
             switch ($this->task->action) {