Server just turns off.

I am not sure why my server just turns off, here's my log. im trying to make pretty much vanilla server other than factions. I have both the 1.7.2 minecraft_server.jar and the craftbukkit.jar. Any one shed some light?

Code:

[22:25:49] [Server thread/INFO]: Starting minecraft server version 1.7.2
[22:25:49] [Server thread/INFO]: Loading properties
[22:25:49] [Server thread/INFO]: Default game type: SURVIVAL
[22:25:49] [Server thread/INFO]: Generating keypair
[22:25:50] [Server thread/INFO]: Starting Minecraft server on *:25645
[22:25:51] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks (MC: 1.7.2) (Implementing API version 1.7.2-R0.4-SNAPSHOT)
[22:25:52] [Thread-7/INFO]: ----- Bukkit Auto Updater -----
[22:25:52] [Thread-7/INFO]: It appears that you're running a Development Build, when you've specified in bukkit.yml that you prefer to run Recommended Builds.
[22:25:52] [Thread-7/INFO]: If you would like to be kept informed about new Development Build releases, it is recommended that you change 'preferred-channel' in your bukkit.yml to 'dev'.
[22:25:52] [Thread-7/INFO]: With that set, you will be told whenever a new version is available for download, so that you can always keep up to date and secure with the latest fixes.
[22:25:52] [Thread-7/INFO]: If you would like to disable this warning, simply set 'suggest-channels' to false in bukkit.yml.
[22:25:52] [Thread-7/INFO]: ----- ------------------- -----
[22:25:53] [Server thread/INFO]: [WorldBorder] Loading WorldBorder v1.7.8
[22:25:53] [Server thread/INFO]: [mcore] Loading mcore v7.0.2
[22:25:53] [Server thread/INFO]: [Essentials] Loading Essentials v2.12.1
[22:25:53] [Server thread/INFO]: [EssentialsChat] Loading EssentialsChat v2.12.1
[22:25:53] [Server thread/INFO]: [EssentialsProtect] Loading EssentialsProtect v2.12.1
[22:25:53] [Server thread/INFO]: [EssentialsSpawn] Loading EssentialsSpawn v2.12.1
[22:25:53] [Server thread/INFO]: [EssentialsAntiBuild] Loading EssentialsAntiBuild v2.12.1
[22:25:53] [Server thread/INFO]: [Factions] Loading Factions v2.3.1
[22:25:53] [Server thread/INFO]: [mcore] Enabling mcore v7.0.2
[22:25:53] [Server thread/INFO]: [mcore 7.0.2] === ENABLE START ===
[22:25:53] [Server thread/INFO]: [mcore 7.0.2] §eSetup of SenderIdMixinDefault took §d32§ems.
[22:25:53] [Server thread/INFO]: [mcore 7.0.2] === ENABLE §aCOMPLETE §e(Took §d300ms§e) ===
[22:25:53] [Server thread/INFO]: Preparing level "world"
[22:25:53] [Server thread/INFO]: Preparing start region for level 0 (Seed: -3251023241199021164)
[22:25:54] [Server thread/INFO]: Preparing spawn area: 22%
[22:25:55] [Server thread/INFO]: Preparing start region for level 1 (Seed: -3251023241199021164)
[22:25:56] [Server thread/INFO]: Preparing spawn area: 55%
[22:25:57] [Server thread/INFO]: Preparing start region for level 2 (Seed: -3251023241199021164)
[22:25:58] [Server thread/INFO]: Preparing spawn area: 85%
[22:25:58] [Server thread/INFO]: [WorldBorder] Enabling WorldBorder v1.7.8
[22:25:58] [Server thread/INFO]: [WorldBorder] [CONFIG] Using elliptic/round border, knockback of 3.0 blocks, and timer delay of 5.
[22:25:58] [Server thread/INFO]: [WorldBorder] [CONFIG] Border-checking timed task started.
[22:25:58] [Server thread/INFO]: [WorldBorder] [CONFIG] World "world" has border radius 600 at X: 19.7 Z: 258.9
[22:25:58] [Server thread/INFO]: [WorldBorder] For reference, the main world's spawn location is at X: 352.0 Y: 64.0 Z: -364.0
[22:25:58] [Server thread/INFO]: [Essentials] Enabling Essentials v2.12.1
[22:25:59] [Server thread/INFO]: Essentials: Using config file enhanced permissions.
[22:25:59] [Server thread/INFO]: Permissions listed in as player-commands will be given to all users.
[22:25:59] [Server thread/INFO]: [EssentialsChat] Enabling EssentialsChat v2.12.1
[22:25:59] [Server thread/INFO]: [EssentialsProtect] Enabling EssentialsProtect v2.12.1
[22:25:59] [Server thread/INFO]: [EssentialsSpawn] Enabling EssentialsSpawn v2.12.1
[22:25:59] [Server thread/INFO]: [EssentialsAntiBuild] Enabling EssentialsAntiBuild v2.12.1
[22:25:59] [Server thread/INFO]: [Factions] Enabling Factions v2.3.1
[22:25:59] [Server thread/INFO]: [Factions 2.3.1] === ENABLE START ===
[22:26:00] [Server thread/INFO]: [Factions 2.3.1] === ENABLE COMPLETE (Took 1057ms) ===
[22:26:00] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[22:26:01] [Server thread/INFO]: Done (7.867s)! For help, type "help" or "?"
[22:27:21] [User Authenticator #1/INFO]: UUID of player bazzaro135 is e9b4f8518f73421fa14b5e3f87752a47
[22:27:21] [Server thread/INFO]: bazzaro135[/66.183.120.2:59358] logged in with entity id 130 at ([world] 313.87220922455396, 71.0, -257.530106920958)
[22:27:53] [Server thread/INFO]: CONSOLE: Stopping the server..
[22:27:53] [Server thread/INFO]: Stopping server
[22:27:53] [Server thread/INFO]: [Factions] Disabling Factions v2.3.1
[22:27:53] [Server thread/INFO]: [Factions 2.3.1] Disabled
[22:27:53] [Server thread/INFO]: [EssentialsAntiBuild] Disabling EssentialsAntiBuild v2.12.1
[22:27:53] [Server thread/INFO]: [EssentialsSpawn] Disabling EssentialsSpawn v2.12.1
[22:27:53] [Server thread/INFO]: [EssentialsProtect] Disabling EssentialsProtect v2.12.1
[22:27:53] [Server thread/INFO]: [EssentialsChat] Disabling EssentialsChat v2.12.1
[22:27:53] [Server thread/INFO]: [Essentials] Disabling Essentials v2.12.1
[22:27:53] [Server thread/INFO]: [mcore] Disabling mcore v7.0.2
[22:27:53] [Server thread/INFO]: [mcore 7.0.2] Disabled
[22:27:53] [Server thread/INFO]: [WorldBorder] Disabling WorldBorder v1.7.8
[22:27:53] [Server thread/INFO]: [WorldBorder] [CONFIG] Border-checking timed task stopped.
[22:27:53] [Server thread/INFO]: Saving players
[22:27:53] [Server thread/INFO]: bazzaro135 lost connection: Server closed
[22:27:53] [Server thread/INFO]: bazzaro135 left the game.
[22:27:53] [Server thread/INFO]: Saving worlds
[22:27:53] [Server thread/INFO]: Saving chunks for level 'world'/Overworld
[22:27:54] [Server thread/INFO]: Saving chunks for level 'world_nether'/Nether
[22:27:54] [Server thread/INFO]: Saving chunks for level 'world_the_end'/The End