//here is the COMPLETE log as requested. No Mods in the game.

[17:07:12] [Client thread/INFO]: Setting user: MeroDN
[17:07:12] [Client thread/INFO]: (Session ID is token:8991583a3e914b3991c04ac724055bee:c16b5f6e017e4888b5ba3860d224bacb)
[17:07:14] [Client thread/INFO]: LWJGL Version: 2.9.1
[17:07:14] [Client thread/INFO]: Reloading ResourceManager: Default
[17:07:15] [Sound Library Loader/INFO]: Starting up SoundSystem...
[17:07:15] [Client thread/WARN]: File minecraft:sounds/mob/ghast/fireball.ogg does not exist, cannot add it to event minecraft:item.fireCharge.use
[17:07:15] [Thread-6/INFO]: Initializing LWJGL OpenAL
[17:07:15] [Thread-6/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[17:07:15] [Thread-6/INFO]: OpenAL initialized.
[17:07:15] [Sound Library Loader/INFO]: Sound engine started
[17:07:18] [Client thread/INFO]: Created: 512x512 textures-atlas
[17:07:55] [Server thread/INFO]: Starting integrated minecraft server version 1.8-pre3
[17:07:55] [Server thread/INFO]: Generating keypair
[17:07:55] [Server thread/INFO]: Converting map!
[17:07:55] [Server thread/INFO]: Scanning folders...
[17:07:55] [Server thread/INFO]: Total conversion count is 0
[17:07:55] [Server thread/INFO]: Preparing start region for level 0
[17:07:56] [Server thread/INFO]: Preparing spawn area: 5%
[17:07:57] [Server thread/INFO]: Preparing spawn area: 14%
[17:07:58] [Server thread/INFO]: Preparing spawn area: 24%
[17:07:59] [Server thread/INFO]: Preparing spawn area: 36%
[17:08:00] [Server thread/INFO]: Preparing spawn area: 49%
[17:08:01] [Server thread/INFO]: Preparing spawn area: 61%
[17:08:02] [Server thread/INFO]: Preparing spawn area: 72%
[17:08:03] [Server thread/INFO]: Preparing spawn area: 85%
[17:08:04] [Server thread/INFO]: Preparing spawn area: 94%
[17:08:05] [Server thread/INFO]: Changing view distance to 32, from 10

//May be the cause. View distance 32. I have done this with optifine though in previous versions.

[17:08:05] [Server thread/INFO]: MeroDN[local:E:7b2b7f51] logged in with entity id 58 at (119.5, 67.0, 72.5)
[17:08:05] [Server thread/INFO]: MeroDN joined the game
[17:08:58] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 52662ms behind, skipping 1053 tick(s)

//This never happened to me before. I did not change system time. I think its overloaded. It never overloaded on other versions of minecraft though.

[17:09:05] [Server thread/INFO]: Saving and pausing game...
[17:09:05] [Server thread/INFO]: Saving chunks for level 'buger'/Overworld
[17:12:45] [Server thread/INFO]: Saving chunks for level 'buger'/Nether
[17:12:45] [Server thread/INFO]: Saving chunks for level 'buger'/The End
[17:12:49] [Server thread/INFO]: MeroDN has just earned the achievement [Taking Inventory]
[17:12:49] [Client thread/INFO]: [CHAT] MeroDN has just earned the achievement [Taking Inventory]
[17:13:28] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 270872ms behind, skipping 5417 tick(s)
[17:13:31] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2159ms behind, skipping 43 tick(s)
[17:13:53] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 8144ms behind, skipping 162 tick(s)

//Game Never recoverd

[17:15:38] [Server thread/INFO]: Saving and pausing game...
[17:15:38] [Server thread/INFO]: Saving chunks for level 'buger'/Overworld
[17:15:38] [Server thread/INFO]: Saving chunks for level 'buger'/Nether
[17:15:38] [Server thread/INFO]: Saving chunks for level 'buger'/The End
[17:15:40] [Server thread/INFO]: Stopping server
[17:15:40] [Server thread/INFO]: Saving players
[17:15:40] [Server thread/INFO]: Saving worlds
[17:15:40] [Server thread/INFO]: Saving chunks for level 'buger'/Overworld
[17:15:40] [Server thread/INFO]: Saving chunks for level 'buger'/Nether
[17:15:40] [Server thread/INFO]: Saving chunks for level 'buger'/The End
[17:15:42] [Client thread/INFO]: Stopping!
[17:15:42] [Client thread/INFO]: SoundSystem shutting down...
[17:15:42] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com