server crashing

[00:30:13] [Server thread/INFO]: Starting minecraft server version 1.7.10
[00:31:38] [Server thread/INFO]: Loading properties
[00:31:38] [Server thread/INFO]: Default game type: SURVIVAL
[00:31:38] [Server thread/INFO]: Generating keypair
[00:31:38] [Server thread/INFO]: Starting Minecraft server on *:47083
[00:32:05] [Server thread/INFO]: Preparing level "world"
[00:32:07] [Server thread/INFO]: Preparing start region for level 0
[00:32:08] [Server thread/INFO]: Preparing spawn area: 3%
[00:32:11] [Server thread/INFO]: Preparing spawn area: 4%
[00:32:14] [Server thread/INFO]: Preparing spawn area: 4%
[00:32:16] [Server thread/INFO]: Preparing spawn area: 5%
[00:32:17] [Server thread/INFO]: Preparing spawn area: 5%
[00:32:18] [Server thread/INFO]: Preparing spawn area: 7%
[00:32:19] [Server thread/INFO]: Preparing spawn area: 9%
[00:32:20] [Server thread/INFO]: Preparing spawn area: 12%
[00:32:21] [Server thread/INFO]: Preparing spawn area: 15%
[00:32:22] [Server thread/INFO]: Preparing spawn area: 18%
[00:32:23] [Server thread/INFO]: Preparing spawn area: 21%
[00:32:24] [Server thread/INFO]: Preparing spawn area: 23%
[00:32:25] [Server thread/INFO]: Preparing spawn area: 26%
[00:32:26] [Server thread/INFO]: Preparing spawn area: 27%
[00:32:27] [Server thread/INFO]: Preparing spawn area: 30%
[00:32:29] [Server thread/INFO]: Preparing spawn area: 32%
[00:32:30] [Server thread/INFO]: Preparing spawn area: 35%
[00:32:31] [Server thread/INFO]: Preparing spawn area: 36%
[00:32:32] [Server thread/INFO]: Preparing spawn area: 39%
[00:32:34] [Server thread/INFO]: Preparing spawn area: 40%
[00:32:35] [Server thread/INFO]: Preparing spawn area: 41%
[00:32:36] [Server thread/INFO]: Preparing spawn area: 43%
[00:32:38] [Server thread/INFO]: Preparing spawn area: 44%
[00:32:39] [Server thread/INFO]: Preparing spawn area: 46%
[00:32:40] [Server thread/INFO]: Preparing spawn area: 47%
[00:32:41] [Server thread/INFO]: Preparing spawn area: 48%
[00:32:42] [Server thread/INFO]: Preparing spawn area: 49%
[00:32:43] [Server thread/INFO]: Preparing spawn area: 52%
[00:32:44] [Server thread/INFO]: Preparing spawn area: 53%
[00:32:45] [Server thread/INFO]: Preparing spawn area: 56%
[00:32:46] [Server thread/INFO]: Preparing spawn area: 58%
[00:32:48] [Server thread/INFO]: Preparing spawn area: 60%
[00:32:49] [Server thread/INFO]: Preparing spawn area: 61%
[00:32:50] [Server thread/INFO]: Preparing spawn area: 64%
[00:32:51] [Server thread/INFO]: Preparing spawn area: 65%
[00:32:52] [Server thread/INFO]: Preparing spawn area: 67%
[00:32:53] [Server thread/INFO]: Preparing spawn area: 69%
[00:32:54] [Server thread/INFO]: Preparing spawn area: 70%
[00:32:55] [Server thread/INFO]: Preparing spawn area: 72%
[00:32:56] [Server thread/INFO]: Preparing spawn area: 73%
[00:32:57] [Server thread/INFO]: Preparing spawn area: 75%
[00:32:59] [Server thread/INFO]: Preparing spawn area: 77%
[00:33:00] [Server thread/INFO]: Preparing spawn area: 78%
[00:33:01] [Server thread/INFO]: Preparing spawn area: 79%
[00:33:02] [Server thread/INFO]: Preparing spawn area: 81%
[00:33:03] [Server thread/INFO]: Preparing spawn area: 82%
[00:33:04] [Server thread/INFO]: Preparing spawn area: 82%
[00:33:05] [Server thread/INFO]: Preparing spawn area: 84%
[00:33:06] [Server thread/INFO]: Preparing spawn area: 86%
[00:33:07] [Server thread/INFO]: Preparing spawn area: 87%
[00:33:08] [Server thread/INFO]: Preparing spawn area: 88%
[00:33:09] [Server thread/INFO]: Preparing spawn area: 90%
[00:33:10] [Server thread/INFO]: Preparing spawn area: 91%
[00:33:11] [Server thread/INFO]: Preparing spawn area: 93%
[00:33:14] [Server thread/INFO]: Preparing spawn area: 94%
[00:33:15] [Server thread/INFO]: Preparing spawn area: 95%
[00:33:16] [Server thread/INFO]: Preparing spawn area: 97%
[00:33:17] [Server thread/INFO]: Preparing spawn area: 99%
[00:33:17] [Server thread/INFO]: Done (72.191s)! For help, type "help" or "?"
[00:33:17] [Server thread/INFO]: Starting GS4 status listener
[00:33:17] [Query Listener #1/INFO]: Query running on 0.0.0.0:57083