Plastic tank causes crashes on server

[TiranDirth]

Placing a plastic tank next to an itemduct causes a crash with the following error:

---- Minecraft Crash Report ---- // Oops.

Time: 22/04/15 16:59 Description: Exception in server tick loop

java.lang.RuntimeException: Crashing on conduit TileEntityRedNetEnergy(x=220,y=106,z=1024)@468488372 at powercrystals.minefactoryreloaded.net.GridTickHandler.tickEnd(GridTickHandler.java:160) at powercrystals.minefactoryreloaded.net.GridTickHandler.tick(GridTickHandler.java:77) at cpw.mods.fml.common.eventhandler.ASMEventHandler_250_GridTickHandler_tick_ServerTickEvent.invoke(.dynamic) at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) at cpw.mods.fml.common.FMLCommonHandler.onPostServerTick(FMLCommonHandler.java:247) at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:590) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) Caused by: java.lang.NullPointerException at powercrystals.minefactoryreloaded.tile.rednet.RedstoneNetwork.mergeGrid(RedstoneNetwork.java:226) at powercrystals.minefactoryreloaded.tile.rednet.TileEntityRedNetCable.incorporateTiles(TileEntityRedNetCable.java:162) at powercrystals.minefactoryreloaded.tile.rednet.TileEntityRedNetCable.firstTick(TileEntityRedNetCable.java:141) at powercrystals.minefactoryreloaded.tile.rednet.TileEntityRedNetEnergy.firstTick(TileEntityRedNetEnergy.java:115) at powercrystals.minefactoryreloaded.net.GridTickHandler.tickEnd(GridTickHandler.java:156) ... 8 more

A detailed walkthrough of the error, its code path and all known details is as follows:

-- System Details -- Details: Minecraft Version: 1.7.10 Operating System: Linux (amd64) version 2.6.32-358.23.2.el6.x86_64 Java Version: 1.7.0_45, Oracle Corporation Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 215441624 bytes (205 MB) / 709885952 bytes (677 MB) up to 709885952 bytes (677 MB) JVM Flags: 0 total; AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 93 FML: MCP v9.05 FML v7.10.85.1291 Minecraft Forge 10.13.2.1291 67 mods loaded, 67 mods active mcp{9.05} Minecraft Coder Pack Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available FML{7.10.85.1291} Forge Mod Loader Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Forge{10.13.2.1291} Minecraft Forge Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available CodeChickenCore{1.0.4.29} CodeChicken Core Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Micdoodlecore{} Micdoodle8 Core Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MobiusCore{1.2.3} MobiusCore Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

{000} [CoFH ASM](minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BiblioCraft{1.9.2} [BiblioCraft](BiblioCraft[v1.9.2][MC1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Mantle{1.7.10-0.3.2.jenkins184} [Mantle](Mantle-1.7.10-0.3.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Natura{2.2.0} [Natura](natura-1.7.10-2.2.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BiomesOPlenty{2.1.0} [Biomes O' Plenty](BiomesOPlenty-1.7.10-2.1.0.1004-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BiblioWoodsBoP{1.9} [BiblioWoods Biomes O'Plenty Edition](BiblioWoods[BiomesOPlenty][v1.9].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BiblioWoodsNatura{1.5} [BiblioWoods Natura Edition](BiblioWoods[Natura][v1.5].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available CoFHCore{1.7.10R3.0.2} [CoFH Core](CoFHCore-[1.7.10]3.0.2-262.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available ThermalFoundation{1.7.10R1.0.0} [Thermal Foundation](ThermalFoundation-[1.7.10]1.0.0-81.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available ThermalExpansion{1.7.10R4.0.1} [Thermal Expansion](ThermalExpansion-[1.7.10]4.0.1-182.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BigReactors{0.4.1A2} [Big Reactors](BigReactors-0.4.1A2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BuildCraft|Core{7.0.1} [BuildCraft](buildcraft-7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BuildCraft|Silicon{7.0.1} [BC Silicon](buildcraft-7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BuildCraft|Transport{7.0.1} [BC Transport](buildcraft-7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BuildCraft|Builders{7.0.1} [BC Builders](buildcraft-7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BuildCraft|Robotics{7.0.1} [BC Robotics](buildcraft-7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BuildCraft|Energy{7.0.1} [BC Energy](buildcraft-7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available BuildCraft|Factory{7.0.1} [BC Factory](buildcraft-7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available CarpentersBlocks{3.3.0.1} [Carpenter's Blocks](Carpenter's Blocks v3.3.0.1 - MC 1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available chisel{1.5.7} [Chisel](Chisel-1.7.10-1.5.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available EnderStorage{1.4.5.27} [EnderStorage](EnderStorage-1.7.10-1.4.5.27-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MetallurgyCore{4.0.4} [Metallurgy Core](MetallurgyCore-1.7.10-4.0.4.18.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded{1.7.10R2.8.0} [MineFactory Reloaded](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available TConstruct{1.7.10-1.7.1.build771} [Tinkers' Construct](TConstruct-1.7.10-1.7.1c.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Metallurgy{4.0.6} [Metallurgy 4](Metallurgy-1.7.10-4.0.6.80.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available ExtraTiC{0.8.4} [ExtraTiC](ExtraTiC-1.7.10-1.0.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available GalacticraftCore{3.0.11} [Galacticraft Core](GalacticraftCore-1.7-3.0.11.320.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available GalacticraftMars{3.0.11} [Galacticraft Planets](Galacticraft-Planets-1.7-3.0.11.320.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available HardcoreEnderExpansion{1.8} [Hardcore Ender Expansion](HardcoreEnderExpansion MC-1.7.10 v1.8.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available inventorytweaks{1.59-dev-152-cf6e263} [Inventory Tweaks](InventoryTweaks-1.59-dev-152.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available IronChest{6.0.41.729} [Iron Chest](ironchest-1.7.10-6.0.41.729-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatAppliedEnergistics{1.7.10R2.8.0} [MFR Compat: Applied Energistics](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatAtum{1.7.10R2.8.0} [MFR Compat: Atum](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatBackTools{1.7.10R2.8.0} [MFR Compat: BackTools](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatBuildCraft{1.7.10R2.8.0} [MFR Compat: BuildCraft](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatChococraft{1.7.10R2.8.0} [MFR Compat: Chococraft](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatExtraBiomes{1.7.10R2.8.0} [MFR Compat: ExtraBiomes](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatForestry{1.7.10R2.8.0} [MFR Compat: Forestry](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatForgeMicroblock{1.7.10R2.8.0} [MFR Compat: ForgeMicroblock](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatIC2{1.7.10R2.8.0} [MFR Compat: IC2](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatMystcraft{1.7.10R2.8.0} [MFR Compat: Mystcraft](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatProjRed{1.7.10R2.8.0} [MFR Compat ProjectRed](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatRailcraft{1.7.10R2.8.0} [MFR Compat: Railcraft](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatSufficientBiomes{1.7.10R2.8.0} [MFR Compat: Sufficient Biomes](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Baubles{1.0.1.10} [Baubles](Baubles-1.7.10-1.0.1.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Thaumcraft{4.2.3.5} [Thaumcraft](Thaumcraft-1.7.10-4.2.3.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatThaumcraft{1.7.10R2.8.0} [MFR Compat: Thaumcraft](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatThermalExpansion{1.7.10R2.8.0} [MFR Compat: Thermal Expansion](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatTConstruct{1.7.10R2.8.0} [MFR Compat: Tinkers' Construct](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available TwilightForest{2.3.2} [The Twilight Forest](twilightforest-1.7.10-2.3.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatTwilightForest{1.7.10R2.8.0} [MFR Compat: TwilightForest](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineFactoryReloaded|CompatVanilla{1.7.10R2.8.0} [MFR Compat: Vanilla](MineFactoryReloaded-[1.7.10]2.8.0-104.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MineTweaker3{3.0.9B} [MineTweaker 3](MineTweaker3-1.7.10-3.0.9C.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available ModTweaker{0.6} [ModTweaker](ModTweaker-1.7.X-0.6-0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available MapWriter{2.1.1} [MapWriter](Opis-1.2.3_1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Opis{1.2.3} [Opis](Opis-1.2.3_1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available RedstoneArsenal{1.7.10R1.1.0} [Redstone Arsenal](RedstoneArsenal-[1.7.10]1.1.0-80.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available simplyjetpacks{1.3.0} [Simply Jetpacks](SimplyJetpacks-MC1.7.10-1.3.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available TabulaRasa{1.7.10R1.0.1} [Tabula Rasa](TabulaRasa-[1.7.10]1.0.1-3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available ThermalDynamics{1.7.10R1.0.0} [Thermal Dynamics](ThermalDynamics-[1.7.10]1.0.0-122.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available TMechworks{1.7.10-86.e500b88} [Tinkers' Mechworks](TMechworks-1.7.10-0.2.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available Mantle Environment: Environment healthy. CoFHCore: -[1.7.10]3.0.2-262 ThermalFoundation: -[1.7.10]1.0.0-81 ThermalExpansion: -[1.7.10]4.0.1-182 MineFactoryReloaded: -[1.7.10]2.8.0-104 TConstruct Environment: Environment healthy. RedstoneArsenal: -[1.7.10]1.1.0-80 ThermalDynamics: -[1.7.10]1.0.0-122 Profiler Position: N/A (disabled) Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Player Count: 1 / 20; [GCEntityPlayerMP['TiranDirth'/567, l='maz_is_short', x=480.30, y=103.00, z=1136.42]] Is Modded: Definitely; Server brand changed to 'fml,forge' Type: Dedicated Server (map_server.txt) Further Info: No other ducts or pipes were connected to the tank in question. The coordinates referenced at the top: TileEntityRedNetEnergy(x=220,y=106,z=1024)@468488372 are not the coordinates the tank was placed at, they point to a rednet cable around 300 blocks away. The cable is not connected to the same power nor redstone network in any way. Removing the tank, which was placed at x:480, y:103, z:1135 stops the crash.

[skyboy]

It's quite impossible for plastic tanks to cause a crash with unrelated code it doesn't interact with that's 300 blocks away. The crash with rednet should be fixed in dev.

[TiranDirth]

I agree that it seems very surprising, I figured I'd report it anyway given the sequence of events I followed.

The server was stable for weeks, one player places a plastic tank and a harvester elsewhere starts throwing crashes and the server is unusable until the tank and harvester were MCedited out. Replace the tank in the same position and get Rednet cable related crashes, which persisted through restarts, but went away when the tank was removed.

That said, stranger coincidences have happened!

[skyboy]

The RedNet crash was a hidden and rare bug due to how chunks unload, and the harvester issue was the result of a not-quite-proper bugfix to dupes involving buildcraft pipes and MFR machines. The proximity of plastic tanks (which have had more than their fair share of crashing, to be fair) was just entirely coincidental.

[TiranDirth]

Fair enough, well, thanks for all the work anyway, the mod is much appreciated!