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Bug
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Resolution: Fixed
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1.16.1, 20w29a, 20w30a
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None
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Confirmed
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Crash
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Very Important
The bug
After killing a mob that is ridden by a guardian while the guardian's being ridden by a wither skeleton, the game crashes as the guardian starts to dismount the entity during its dying animation while it has a wither skeleton above it.
To reproduce
- Run this command
/summon minecraft:husk ~ ~ ~ {Passengers:[{id:guardian,Passengers:[{id:wither_skeleton}]}]}
- Kill the husk
→ it crashes
Crash report
1.16.1: crash-2020-07-20_18.15.42-server.txt
Description: Ticking entity java.lang.ClassCastException: awx cannot be cast to awu at avl.d(SourceFile:26) at avx.d(SourceFile:50) at auh$$Lambda$4487/946183892.accept(Unknown Source) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at auh.b(SourceFile:63) at aoz.dO(SourceFile:732) at aoy.k(SourceFile:2505) at aoz.k(SourceFile:538) at bcb.k(SourceFile:42) at bbk.k(SourceFile:127) at aoy.j(SourceFile:2251) at aoz.j(SourceFile:338) at aom.aW(SourceFile:1737) at aoy.aW(SourceFile:2665) at bbk.aW(SourceFile:132) at zd.a(SourceFile:646) at zd.a(SourceFile:654) at zd.a(SourceFile:623) at zd$$Lambda$4254/1032114365.accept(Unknown Source) at bqb.a(SourceFile:603) at zd.a(SourceFile:405) at net.minecraft.server.MinecraftServer.b(SourceFile:873) at net.minecraft.server.MinecraftServer.a(SourceFile:813) at eoz.a(SourceFile:93) at net.minecraft.server.MinecraftServer.v(SourceFile:672) at net.minecraft.server.MinecraftServer.a(SourceFile:256) at net.minecraft.server.MinecraftServer$$Lambda$3784/128204151.run(Unknown Source) at java.lang.Thread.run(Thread.java:745) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Server thread Stacktrace: at avl.d(SourceFile:26) at avx.d(SourceFile:50) at auh$$Lambda$4487/946183892.accept(Unknown Source) at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) at java.util.Iterator.forEachRemaining(Iterator.java:116) at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) at auh.b(SourceFile:63) at aoz.dO(SourceFile:732) at aoy.k(SourceFile:2505) at aoz.k(SourceFile:538) at bcb.k(SourceFile:42) at bbk.k(SourceFile:127) at aoy.j(SourceFile:2251) at aoz.j(SourceFile:338) at aom.aW(SourceFile:1737) at aoy.aW(SourceFile:2665) at bbk.aW(SourceFile:132) at zd.a(SourceFile:646) at zd.a(SourceFile:654) at zd.a(SourceFile:623) at zd$$Lambda$4254/1032114365.accept(Unknown Source) -- Entity being ticked -- Details: Entity Type: minecraft:husk (bby) Entity ID: 226 Entity Name: Husk Entity's Exact location: 18.74, 4.00, 17.06 Entity's Block location: World: (18,4,17), Chunk: (at 2,0,1 in 1,1; contains blocks 16,0,16 to 31,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511) Entity's Momentum: 0.00, -0.08, 0.00 Entity's Passengers: [] Entity's Vehicle: ~~ERROR~~ NullPointerException: null Stacktrace: at bqb.a(SourceFile:603) at zd.a(SourceFile:405) -- Affected level -- Details: All players: 1 total; [ze['drownedzombie00'/1, l='ServerLevel[New World]', x=17.29, y=4.00, z=10.99]] Chunk stats: ServerChunkCache: 2209 Level dimension: minecraft:overworld Level spawn location: World: (0,4,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511) Level time: 107906 game time, 6000 day time Level name: New World Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false) Known server brands: vanilla Level was modded: false Level storage version: 0x04ABD - Anvil Stacktrace: at net.minecraft.server.MinecraftServer.b(SourceFile:873) at net.minecraft.server.MinecraftServer.a(SourceFile:813) at eoz.a(SourceFile:93) at net.minecraft.server.MinecraftServer.v(SourceFile:672) at net.minecraft.server.MinecraftServer.a(SourceFile:256) at net.minecraft.server.MinecraftServer$$Lambda$3784/128204151.run(Unknown Source) at java.lang.Thread.run(Thread.java:745) -- System Details -- Details: Minecraft Version: 1.16.1 Minecraft Version ID: 1.16.1 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 2799584808 bytes (2669 MB) / 3590324224 bytes (3424 MB) up to 7516192768 bytes (7168 MB) CPUs: 4 JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx7G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Player Count: 1 / 8; [ze['drownedzombie00'/1, l='ServerLevel[New World]', x=17.29, y=4.00, z=10.99]] Data Packs: vanilla Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.