Serveur minecraft sur linux

bonjour,

j'ai mis minecraft sur ma carte raspberry pi 2, mais peu de temps après l'avoir lancé, il crash :

pi@raspberrypi ~/serveurminecraft $ java -Xms512M -Xmx800M -jar /home/pi/serveurminecraft/minecraft-server.jar nogui
2015-10-27 09:37:37,235 ERROR Error processing element Queue: CLASS_NOT_FOUND
2015-10-27 09:37:37,443 ERROR Unable to locate appender ServerGuiConsole for logger 
[09:37:53] [Server thread/INFO]: Starting minecraft server version 1.8.8
[09:37:53] [Server thread/INFO]: Loading properties
[09:37:53] [Server thread/INFO]: Default game type: SURVIVAL
[09:37:53] [Server thread/INFO]: Generating keypair
[09:37:56] [Server thread/INFO]: Starting Minecraft server on *:25565
Java HotSpot(TM) Client VM warning: You have loaded library /tmp/libnetty-transport-native-epoll3341396095910435402.so which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
[09:37:56] [Server thread/INFO]: Using default channel type
[09:37:57] [Server thread/INFO]: Preparing level "world"
[09:37:59] [Server thread/INFO]: Preparing start region for level 0
[09:38:01] [Server thread/INFO]: Preparing spawn area: 0%
[09:38:02] [Server thread/INFO]: Preparing spawn area: 1%
[09:38:03] [Server thread/INFO]: Preparing spawn area: 2%
[09:38:04] [Server thread/INFO]: Preparing spawn area: 3%
[09:38:05] [Server thread/INFO]: Preparing spawn area: 4%
[09:38:07] [Server thread/INFO]: Preparing spawn area: 4%
[09:38:08] [Server thread/INFO]: Preparing spawn area: 5%
[09:38:09] [Server thread/INFO]: Preparing spawn area: 6%
[09:38:10] [Server thread/INFO]: Preparing spawn area: 7%
[09:38:11] [Server thread/INFO]: Preparing spawn area: 7%
[09:38:12] [Server thread/INFO]: Preparing spawn area: 8%
[09:38:13] [Server thread/INFO]: Preparing spawn area: 9%
[09:38:15] [Server thread/INFO]: Preparing spawn area: 9%
[09:38:16] [Server thread/INFO]: Preparing spawn area: 10%
[09:38:17] [Server thread/INFO]: Preparing spawn area: 11%
[09:38:19] [Server thread/INFO]: Preparing spawn area: 11%
[09:38:21] [Server thread/INFO]: Preparing spawn area: 12%
[09:38:23] [Server thread/INFO]: Preparing spawn area: 12%
[09:38:24] [Server thread/INFO]: Preparing spawn area: 13%
[09:38:25] [Server thread/INFO]: Preparing spawn area: 13%
[09:38:26] [Server thread/INFO]: Preparing spawn area: 14%
[09:38:27] [Server thread/INFO]: Preparing spawn area: 15%
[09:38:29] [Server thread/INFO]: Preparing spawn area: 15%
[09:38:30] [Server thread/INFO]: Preparing spawn area: 16%
[09:38:31] [Server thread/INFO]: Preparing spawn area: 16%
[09:38:32] [Server thread/INFO]: Preparing spawn area: 17%
[09:38:33] [Server thread/INFO]: Preparing spawn area: 18%
[09:38:34] [Server thread/INFO]: Preparing spawn area: 18%
[09:38:35] [Server thread/INFO]: Preparing spawn area: 19%
[09:38:37] [Server thread/INFO]: Preparing spawn area: 19%
[09:38:38] [Server thread/INFO]: Preparing spawn area: 20%
[09:38:39] [Server thread/INFO]: Preparing spawn area: 21%
[09:38:40] [Server thread/INFO]: Preparing spawn area: 21%
[09:38:41] [Server thread/INFO]: Preparing spawn area: 22%
[09:38:42] [Server thread/INFO]: Preparing spawn area: 22%
[09:38:44] [Server thread/INFO]: Preparing spawn area: 23%
[09:38:45] [Server thread/INFO]: Preparing spawn area: 23%
[09:38:46] [Server thread/INFO]: Preparing spawn area: 24%
[09:38:47] [Server thread/INFO]: Preparing spawn area: 25%
[09:38:48] [Server thread/INFO]: Preparing spawn area: 25%
[09:38:49] [Server thread/INFO]: Preparing spawn area: 26%
[09:38:50] [Server thread/INFO]: Preparing spawn area: 26%
[09:38:52] [Server thread/INFO]: Preparing spawn area: 27%
[09:38:53] [Server thread/INFO]: Preparing spawn area: 28%
[09:38:54] [Server thread/INFO]: Preparing spawn area: 28%
[09:38:55] [Server thread/INFO]: Preparing spawn area: 29%
[09:38:56] [Server thread/INFO]: Preparing spawn area: 29%
[09:38:57] [Server thread/INFO]: Preparing spawn area: 30%
[09:38:59] [Server thread/INFO]: Preparing spawn area: 31%
[09:39:00] [Server thread/INFO]: Preparing spawn area: 31%
[09:39:01] [Server thread/INFO]: Preparing spawn area: 32%
[09:39:02] [Server thread/INFO]: Preparing spawn area: 32%
[09:39:03] [Server thread/INFO]: Preparing spawn area: 33%
[09:39:05] [Server thread/INFO]: Preparing spawn area: 33%
[09:39:06] [Server thread/INFO]: Preparing spawn area: 33%
[09:39:07] [Server thread/INFO]: Preparing spawn area: 34%
[09:39:09] [Server thread/INFO]: Preparing spawn area: 34%
[09:39:10] [Server thread/INFO]: Preparing spawn area: 35%
[09:39:11] [Server thread/INFO]: Preparing spawn area: 36%
[09:39:12] [Server thread/INFO]: Preparing spawn area: 36%
[09:39:14] [Server thread/INFO]: Preparing spawn area: 37%
[09:39:15] [Server thread/INFO]: Preparing spawn area: 37%
[09:39:16] [Server thread/INFO]: Preparing spawn area: 38%
[09:39:18] [Server thread/INFO]: Preparing spawn area: 39%
[09:39:19] [Server thread/INFO]: Preparing spawn area: 39%
[09:39:20] [Server thread/INFO]: Preparing spawn area: 40%
[09:39:21] [Server thread/INFO]: Preparing spawn area: 40%
[09:39:23] [Server thread/INFO]: Preparing spawn area: 41%
[09:39:24] [Server thread/INFO]: Preparing spawn area: 41%
[09:39:25] [Server thread/INFO]: Preparing spawn area: 42%
[09:39:26] [Server thread/INFO]: Preparing spawn area: 42%
[09:39:27] [Server thread/INFO]: Preparing spawn area: 43%
[09:39:29] [Server thread/INFO]: Preparing spawn area: 44%
[09:39:30] [Server thread/INFO]: Preparing spawn area: 44%
[09:39:31] [Server thread/INFO]: Preparing spawn area: 45%
[09:39:33] [Server thread/INFO]: Preparing spawn area: 45%
[09:39:34] [Server thread/INFO]: Preparing spawn area: 46%
[09:39:35] [Server thread/INFO]: Preparing spawn area: 46%
[09:39:36] [Server thread/INFO]: Preparing spawn area: 47%
[09:39:37] [Server thread/INFO]: Preparing spawn area: 48%
[09:39:38] [Server thread/INFO]: Preparing spawn area: 48%
[09:39:39] [Server thread/INFO]: Preparing spawn area: 49%
[09:39:42] [Server thread/INFO]: Preparing spawn area: 49%
[09:39:43] [Server thread/INFO]: Preparing spawn area: 50%
[09:39:44] [Server thread/INFO]: Preparing spawn area: 51%
[09:39:45] [Server thread/INFO]: Preparing spawn area: 51%
[09:39:46] [Server thread/INFO]: Preparing spawn area: 52%
[09:39:48] [Server thread/INFO]: Preparing spawn area: 52%
[09:39:49] [Server thread/INFO]: Preparing spawn area: 53%
[09:39:50] [Server thread/INFO]: Preparing spawn area: 54%
[09:39:51] [Server thread/INFO]: Preparing spawn area: 54%
[09:39:52] [Server thread/INFO]: Preparing spawn area: 55%
[09:39:53] [Server thread/INFO]: Preparing spawn area: 56%
[09:39:55] [Server thread/INFO]: Preparing spawn area: 56%
[09:39:57] [Server thread/INFO]: Preparing spawn area: 57%
[09:39:58] [Server thread/INFO]: Preparing spawn area: 58%
[09:39:59] [Server thread/INFO]: Preparing spawn area: 58%
[09:40:00] [Server thread/INFO]: Preparing spawn area: 59%
[09:40:01] [Server thread/INFO]: Preparing spawn area: 59%
[09:40:02] [Server thread/INFO]: Preparing spawn area: 60%
[09:40:03] [Server thread/INFO]: Preparing spawn area: 60%
[09:40:05] [Server thread/INFO]: Preparing spawn area: 61%
[09:40:06] [Server thread/INFO]: Preparing spawn area: 62%
[09:40:07] [Server thread/INFO]: Preparing spawn area: 62%
[09:40:08] [Server thread/INFO]: Preparing spawn area: 63%
[09:40:09] [Server thread/INFO]: Preparing spawn area: 64%
[09:40:10] [Server thread/INFO]: Preparing spawn area: 64%
[09:40:12] [Server thread/INFO]: Preparing spawn area: 65%
[09:40:13] [Server thread/INFO]: Preparing spawn area: 66%
[09:40:14] [Server thread/INFO]: Preparing spawn area: 66%
[09:40:15] [Server thread/INFO]: Preparing spawn area: 67%
[09:40:16] [Server thread/INFO]: Preparing spawn area: 68%
[09:40:18] [Server thread/INFO]: Preparing spawn area: 68%
[09:40:19] [Server thread/INFO]: Preparing spawn area: 69%
[09:40:20] [Server thread/INFO]: Preparing spawn area: 70%
[09:40:21] [Server thread/INFO]: Preparing spawn area: 70%
[09:40:22] [Server thread/INFO]: Preparing spawn area: 71%
[09:40:23] [Server thread/INFO]: Preparing spawn area: 72%
[09:40:25] [Server thread/INFO]: Preparing spawn area: 72%
[09:40:26] [Server thread/INFO]: Preparing spawn area: 73%
[09:40:27] [Server thread/INFO]: Preparing spawn area: 74%
[09:40:28] [Server thread/INFO]: Preparing spawn area: 74%
[09:40:30] [Server thread/INFO]: Preparing spawn area: 75%
[09:40:31] [Server thread/INFO]: Preparing spawn area: 76%
[09:40:32] [Server thread/INFO]: Preparing spawn area: 76%
[09:40:33] [Server thread/INFO]: Preparing spawn area: 77%
[09:40:34] [Server thread/INFO]: Preparing spawn area: 77%
[09:40:35] [Server thread/INFO]: Preparing spawn area: 78%
[09:40:37] [Server thread/INFO]: Preparing spawn area: 78%
[09:40:38] [Server thread/INFO]: Preparing spawn area: 79%
[09:40:39] [Server thread/INFO]: Preparing spawn area: 80%
[09:40:41] [Server thread/INFO]: Preparing spawn area: 81%
[09:40:42] [Server thread/INFO]: Preparing spawn area: 81%
[09:40:43] [Server thread/INFO]: Preparing spawn area: 82%
[09:40:44] [Server thread/INFO]: Preparing spawn area: 83%
[09:40:45] [Server thread/INFO]: Preparing spawn area: 83%
[09:40:46] [Server thread/INFO]: Preparing spawn area: 84%
[09:40:47] [Server thread/INFO]: Preparing spawn area: 85%
[09:40:48] [Server thread/INFO]: Preparing spawn area: 85%
[09:40:50] [Server thread/INFO]: Preparing spawn area: 86%
[09:40:51] [Server thread/INFO]: Preparing spawn area: 86%
[09:40:52] [Server thread/INFO]: Preparing spawn area: 87%
[09:40:53] [Server thread/INFO]: Preparing spawn area: 87%
[09:40:54] [Server thread/INFO]: Preparing spawn area: 88%
[09:40:56] [Server thread/INFO]: Preparing spawn area: 89%
[09:40:57] [Server thread/INFO]: Preparing spawn area: 89%
[09:40:58] [Server thread/INFO]: Preparing spawn area: 90%
[09:40:59] [Server thread/INFO]: Preparing spawn area: 91%
[09:41:01] [Server thread/INFO]: Preparing spawn area: 91%
[09:41:02] [Server thread/INFO]: Preparing spawn area: 92%
[09:41:03] [Server thread/INFO]: Preparing spawn area: 92%
[09:41:04] [Server thread/INFO]: Preparing spawn area: 93%
[09:41:05] [Server thread/INFO]: Preparing spawn area: 94%
[09:41:06] [Server thread/INFO]: Preparing spawn area: 94%
[09:41:07] [Server thread/INFO]: Preparing spawn area: 95%
[09:41:09] [Server thread/INFO]: Preparing spawn area: 95%
[09:41:10] [Server thread/INFO]: Preparing spawn area: 96%
[09:41:11] [Server thread/INFO]: Preparing spawn area: 97%
[09:41:12] [Server thread/INFO]: Preparing spawn area: 97%
[09:41:13] [Server thread/INFO]: Preparing spawn area: 98%
[09:41:15] [Server thread/INFO]: Preparing spawn area: 99%
[09:41:16] [Server thread/INFO]: Preparing spawn area: 99%
[09:41:17] [Server thread/INFO]: Preparing spawn area: 99%
[09:41:17] [Server thread/INFO]: Done (200.529s)! For help, type "help" or "?"
[09:41:21] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2110ms behind, skipping 42 tick(s)
[09:41:38] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2399ms behind, skipping 47 tick(s)
[09:42:05] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2298ms behind, skipping 45 tick(s)

est-ce que quelqu'un peut m'aider à faire fonctionner mon serveur minecraft ?
j'ai la version payante et ma rpi est légèrement overclockée



merci à ceux qui m'aideront !!!