Some additional information when the server actually crashes. This is from the console...
19.03 10:47:13 [Multicraft] Server stopped
19.03 10:47:13 [Multicraft] Server shut down
19.03 10:47:12 [Server] INFO /run.sh: line 31: 9757 Killed /monitor.sh "$PID" "$USER"
19.03 10:47:12 [Server] INFO Process 9756 detected
19.03 10:47:12 [Server] INFO Process 9756 dead!
19.03 10:47:11 [Server] Server thread/INFO [FML]: The state engine was in incorrect state SERVER_STOPPING and forced into state SERVER_STOPPED. Errors may have been discarded.
19.03 10:47:11 [Server] Server thread/INFO [com.mcjty.rftools.RFTools]: Cleaning up RFTools dimensions
19.03 10:47:11 [Server] Server thread/INFO [STDOUT]: [com.mcjty.rftools.RFTools:serverStopped:183]: ###### RFTools.serverStopped
19.03 10:47:11 [Server] pool-4-thread-1/INFO [EnderIO]: ServerChannelRegister: Dimensional Trasciever data saved to /./ServerWorld/enderio/dimensionalTransceiver.json
19.03 10:47:11 [Server] Server thread/INFO [FML]: Holder lookups applied
19.03 10:47:11 [Server] Server thread/WARN [FML]: Unable to lookup chisel:cobblestoneWall for public static com.cricketcraft.chisel.block.BlockMarbleWall com.cricketcraft.chisel.init.ChiselBlocks.cobblestoneWall. Is there something wrong with the registry?
19.03 10:47:11 [Server] Server thread/INFO [FML]: Applying holder lookups
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -19
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 7
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 8
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 11
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -7
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 14
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -100
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 15
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 16
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 17
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 19
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 20
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -42
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -38
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -37
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -34
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 1
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension -1
19.03 10:47:11 [Server] Server thread/INFO [FML]: Unloading dimension 0
19.03 10:47:11 [Multicraft] Skipped 18 lines due to rate limit (30/s)
19.03 10:47:09 [Server] Server thread/INFO Saving chunks for level 'ServerWorld'/Nether
19.03 10:47:09 [Server] Server thread/INFO Saving chunks for level 'ServerWorld'/Overworld
19.03 10:47:09 [Server] Server thread/INFO Saving worlds
19.03 10:47:09 [Server] Server thread/INFO Saving players
19.03 10:47:09 [Server] Server thread/INFO Stopping server
19.03 10:47:09 [Server] Server thread/ERROR This crash report has been saved to: /./crash-reports/crash-2015-03-19_10.47.09-server.txt
19.03 10:47:09 [Server] INFO ... 4 more
19.03 10:47:09 [Server] INFO at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636) ~[MinecraftServer.class:?]