2013-07-28 09:45:41 [INFO] [TickThreading] Activating mod TickThreading
2013-07-28 09:45:41 [INFO] [TickThreading] Started TT metrics reporting. This can be disabled in PluginMetrics.cfg
2013-07-28 09:45:55 [SEVERE] [TickThreading] TickThreading v1.5.2.184 for MC1.5.2 on 1.5.2 tickthreading,mcpc,spigot,craftbukkit,forge,fml - 1.8.0-ea-b97 is installed on this server!
If anything breaks, check if it is still broken without TickThreading
We don't want to annoy mod devs with issue reports caused by TickThreading.
Seriously, please don't.
If it's only broken with TickThreading, report it at https://github.com/nallar/TickThreading/issues/new

Also, you really should be making regular backups. (You should be doing that even when not using TT.)
2013-07-28 09:45:55 [WARNING] [TickThreading] You are using java version 1.8.0-ea-b97.
2013-07-28 09:45:55 [WARNING] [TickThreading] This is not recommended, as 1.8 causes the deadlock detector to be unable to attempt to fix deadlocks due to the removal of Thread.stop(), and I have not yet implemented a workaround.
2013-07-28 09:50:42 [SEVERE] [TickThreading] Removed c net.minecraft.tileentity.TileEntityChest @484500972 in Overworld/0 at x, y, z: 11, 23, 1 as it should have been unloaded.
Removed c net.minecraft.tileentity.TileEntityChest @1730067268 in Overworld/0 at x, y, z: 10, 23, 1 as it should have been unloaded.
Removed c net.minecraft.tileentity.TileEntityMobSpawner @1421997473 in Overworld/0 at x, y, z: 8, 23, 0 as it should have been unloaded.
Found and fixed 3 discrepancies in tile/entity lists in Overworld/0
tiles - invalid: 0, missing: 0, duplicate: 0, unloaded: 3
entities -  missing: 0, duplicate: 0, unloaded: 0
Took 33ms
2013-07-28 09:55:26 [SEVERE] [TickThreading] Exception ticking block net.minecraft.block.BlockGrass@fc33adf at x70y1448z50
java.lang.NullPointerException
	at org.bukkit.craftbukkit.v1_5_R3.CraftWorld.getBlockAt(CraftWorld.java:202)
	at net.minecraft.block.BlockGrass.func_71847_b(BlockGrass.java:34)
	at net.minecraft.world.WorldServer.run(WorldServer.java:598)
	at nallar.tickthreading.minecraft.ThreadManager$1.run(ThreadManager.java:43)
	at nallar.tickthreading.util.FakeServerThread.run(FakeServerThread.java:16)
2013-07-28 09:55:34 [SEVERE] [TickThreading] Exception ticking block net.minecraft.block.BlockFlowing@1214bb3e at x150y30z130
java.lang.NullPointerException
	at org.bukkit.craftbukkit.v1_5_R3.CraftWorld.getBlockAt(CraftWorld.java:202)
	at net.minecraft.block.BlockFlowing.func_71847_b(BlockFlowing.java:74)
	at net.minecraft.world.WorldServer.run(WorldServer.java:598)
	at nallar.tickthreading.minecraft.ThreadManager$1.run(ThreadManager.java:43)
	at nallar.tickthreading.util.FakeServerThread.run(FakeServerThread.java:16)
2013-07-28 09:56:09 [SEVERE] [TickThreading] Found and fixed 1 discrepancies in tile/entity lists in Overworld/0
tiles - invalid: 0, missing: 0, duplicate: 0, unloaded: 0
entities -  missing: 1, duplicate: 0, unloaded: 0
Took 52ms
2013-07-28 09:57:08 [WARNING] [TickThreading] Partial save queue overloaded in Overworld/0. You should consider decreasing saveInterval. Only saved 192 out of 191
2013-07-28 09:57:37 [WARNING] [TickThreading] Partial save queue overloaded in Overworld/0. You should consider decreasing saveInterval. Only saved 288 out of 287
2013-07-28 09:58:04 [WARNING] [TickThreading] Partial save queue overloaded in Overworld/0. You should consider decreasing saveInterval. Only saved 432 out of 431
2013-07-28 09:58:31 [WARNING] [TickThreading] Partial save queue overloaded in Overworld/0. You should consider decreasing saveInterval. Only saved 648 out of 647
2013-07-28 09:58:59 [WARNING] [TickThreading] Partial save queue overloaded in Overworld/0. You should consider decreasing saveInterval. Only saved 972 out of 971
2013-07-28 09:59:26 [WARNING] [TickThreading] Partial save queue overloaded in Overworld/0. You should consider decreasing saveInterval. Only saved 1458 out of 1457