I have discovered this bug while testing MC-99259.
Get a Wither Skeleton Skull
Place it on the ground anywhere
→ Your game will crash
18w30b\: [^crash-2018-07-26_15.58.26-client.txt]
---- Minecraft Crash Report ----
// I blame Dinnerbone.
Time: 7/26/18 3:58 PM
Description: Unexpected error
java.lang.NullPointerException: Unexpected error
at bjc.w(SourceFile:119)
at biu.a(SourceFile:45)
at biu.a(SourceFile:40)
at arh.a(SourceFile:63)
at arh.a(SourceFile:36)
at atc.a(SourceFile:186)
at cqx.a(SourceFile:333)
at cfl.aw(SourceFile:1176)
at cfl.ax(SourceFile:1409)
at cfl.m(SourceFile:1250)
at cfl.c(SourceFile:820)
at cfl.a(SourceFile:394)
at net.minecraft.client.main.Main.main(SourceFile:144)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Client thread
Stacktrace:
at bjc.w(SourceFile:119)
at biu.a(SourceFile:45)
at biu.a(SourceFile:40)
at arh.a(SourceFile:63)
at arh.a(SourceFile:36)
at atc.a(SourceFile:186)
at cqx.a(SourceFile:333)
at cfl.aw(SourceFile:1176)
at cfl.ax(SourceFile:1409)
-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [ctb['Asteraoth'/225, l='MpServer', x=-36.83, y=63.00, z=225.18]]
Chunk stats: MultiplayerChunkCache: 552, 552
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options: {}
Level spawn location: World: (-44,63,228), Chunk: (at 4,3,4 in -3,14; contains blocks -48,0,224 to -33,255,239), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 2780 game time, 2780 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 110 total; [amk['Red Mushroom'/769, l='MpServer', x=-94.13, y=14.07, z=232.13], anv['Zombie Villager'/1794, l='MpServer', x=2.18, y=22.00, z=227.50], anu['Zombie'/1795, l='MpServer', x=-84.50, y=50.00, z=252.50], anu['Zombie'/1796, l='MpServer', x=-87.50, y=50.00, z=254.50], amr['Creeper'/2053, l='MpServer', x=-64.50, y=13.00, z=224.50], anu['Zombie'/2054, l='MpServer', x=-71.50, y=13.00, z=224.50], amk['Rail'/776, l='MpServer', x=-63.32, y=11.00, z=203.48], ajk['Bat'/1549, l='MpServer', x=27.66, y=37.02, z=284.26], anu['Zombie'/2062, l='MpServer', x=28.50, y=21.00, z=200.50], amu['Enderman'/2075, l='MpServer', x=-2.50, y=49.00, z=294.50], anu['Zombie'/2331, l='MpServer', x=-96.50, y=16.00, z=229.50], amr['Creeper'/2078, l='MpServer', x=-97.50, y=16.00, z=198.50], amr['Creeper'/2079, l='MpServer', x=-93.81, y=15.00, z=191.48], amr['Creeper'/2080, l='MpServer', x=-95.60, y=16.00, z=190.98], ajy['Pig'/42, l='MpServer', x=-115.37, y=63.00, z=196.47], ajy['Pig'/43, l='MpServer', x=-115.46, y=63.00, z=198.78], anl['Skeleton'/2347, l='MpServer', x=29.50, y=36.00, z=232.50], ajy['Pig'/44, l='MpServer', x=-114.97, y=64.00, z=193.10], anu['Zombie'/2348, l='MpServer', x=33.50, y=23.00, z=209.50], anu['Zombie'/2350, l='MpServer', x=38.24, y=26.00, z=212.49], anl['Skeleton'/1328, l='MpServer', x=-53.50, y=13.00, z=245.50], anl['Skeleton'/2352, l='MpServer', x=-92.50, y=23.00, z=292.50], anl['Skeleton'/1856, l='MpServer', x=6.37, y=35.00, z=291.47], amk['Rail'/71, l='MpServer', x=-90.63, y=15.00, z=228.59], ajk['Bat'/2119, l='MpServer', x=-62.38, y=48.75, z=284.48], amk['Rail'/72, l='MpServer', x=-90.13, y=15.00, z=224.25], amr['Creeper'/1864, l='MpServer', x=-6.30, y=33.17, z=269.60], ajk['Bat'/2121, l='MpServer', x=16.35, y=25.09, z=214.61], amk['Rail'/76, l='MpServer', x=-82.24, y=8.00, z=284.09], amk['Rail'/77, l='MpServer', x=-81.67, y=8.00, z=282.13], amu['Enderman'/1875, l='MpServer', x=-73.50, y=14.00, z=182.50], akg['Squid'/1620, l='MpServer', x=-95.39, y=62.57, z=248.58], ano['Spider'/1876, l='MpServer', x=-73.50, y=14.00, z=186.50], akg['Squid'/1621, l='MpServer', x=-95.74, y=61.92, z=245.69], apj['Minecart with Chest'/89, l='MpServer', x=-68.50, y=14.06, z=209.50], anl['Skeleton'/1637, l='MpServer', x=-88.50, y=21.00, z=240.50], anl['Skeleton'/2407, l='MpServer', x=-71.50, y=11.00, z=194.50], ajy['Pig'/104, l='MpServer', x=-69.33, y=68.00, z=166.48], anl['Skeleton'/2408, l='MpServer', x=-70.50, y=11.00, z=197.50], ajy['Pig'/105, l='MpServer', x=-61.00, y=66.00, z=172.00], ajy['Pig'/106, l='MpServer', x=-63.10, y=67.00, z=170.00], ajy['Pig'/107, l='MpServer', x=-60.00, y=66.00, z=171.00], apj['Minecart with Chest'/108, l='MpServer', x=-51.50, y=14.06, z=179.50], amk['String'/109, l='MpServer', x=-62.90, y=17.31, z=191.13], amk['String'/110, l='MpServer', x=-60.13, y=17.15, z=191.13], ajk['Bat'/1905, l='MpServer', x=-68.30, y=52.10, z=259.07], amr['Creeper'/2161, l='MpServer', x=-24.50, y=41.00, z=282.50], akd['Sheep'/125, l='MpServer', x=-27.21, y=63.00, z=232.08], anu['Zombie'/1917, l='MpServer', x=-39.50, y=18.00, z=223.50], akd['Sheep'/126, l='MpServer', x=-31.77, y=63.00, z=238.48], anu['Zombie'/1918, l='MpServer', x=-37.50, y=18.00, z=225.50], akd['Sheep'/127, l='MpServer', x=-34.60, y=63.00, z=227.22], akd['Sheep'/128, l='MpServer', x=-38.23, y=63.00, z=224.46], anu['Zombie'/1921, l='MpServer', x=-90.74, y=27.00, z=254.53], anu['Zombie'/1923, l='MpServer', x=-91.81, y=25.00, z=260.52], akd['Sheep'/139, l='MpServer', x=-26.23, y=64.00, z=191.57], akd['Sheep'/140, l='MpServer', x=-24.41, y=64.00, z=209.75], akb['Rabbit'/142, l='MpServer', x=-15.60, y=63.00, z=188.00], akb['Rabbit'/143, l='MpServer', x=-15.00, y=63.00, z=184.00], amr['Creeper'/1679, l='MpServer', x=25.50, y=22.00, z=301.50], akb['Rabbit'/144, l='MpServer', x=-15.00, y=63.00, z=186.00], akd['Sheep'/147, l='MpServer', x=-10.00, y=69.00, z=270.00], amr['Creeper'/1939, l='MpServer', x=-102.79, y=22.00, z=276.41], akd['Sheep'/148, l='MpServer', x=-9.00, y=69.00, z=271.00], amr['Creeper'/1940, l='MpServer', x=-104.58, y=22.00, z=269.54], akd['Sheep'/149, l='MpServer', x=-10.00, y=69.00, z=271.00], akd['Sheep'/150, l='MpServer', x=-11.00, y=69.00, z=271.00], anu['Zombie'/1942, l='MpServer', x=-104.50, y=22.00, z=268.50], ajy['Pig'/151, l='MpServer', x=-17.45, y=64.00, z=284.68], anu['Zombie'/1943, l='MpServer', x=-103.69, y=22.00, z=272.14], ajy['Pig'/152, l='MpServer', x=-23.27, y=64.00, z=294.54], ajy['Pig'/153, l='MpServer', x=-14.11, y=64.00, z=294.22], ajy['Pig'/154, l='MpServer', x=-12.24, y=64.00, z=294.16], amk['Brown Mushroom'/160, l='MpServer', x=14.10, y=14.00, z=261.23], ajp['Chicken'/162, l='MpServer', x=10.52, y=63.00, z=288.02], ajp['Chicken'/163, l='MpServer', x=12.00, y=65.00, z=292.00], ajp['Chicken'/164, l='MpServer', x=10.00, y=64.00, z=289.00], ajp['Chicken'/165, l='MpServer', x=12.00, y=64.00, z=290.00], amr['Creeper'/1194, l='MpServer', x=33.50, y=23.00, z=276.50], ajp['Chicken'/172, l='MpServer', x=26.00, y=64.00, z=304.40], ajp['Chicken'/173, l='MpServer', x=25.00, y=64.00, z=305.00], ajk['Bat'/2221, l='MpServer', x=19.98, y=30.30, z=181.12], ajp['Chicken'/174, l='MpServer', x=27.00, y=64.00, z=304.40], ajy['Pig'/178, l='MpServer', x=35.00, y=64.00, z=240.90], ajy['Pig'/179, l='MpServer', x=36.00, y=65.00, z=251.00], ajk['Bat'/2232, l='MpServer', x=12.50, y=20.87, z=297.50], ajk['Bat'/2233, l='MpServer', x=17.45, y=20.06, z=296.62], ajk['Bat'/2234, l='MpServer', x=15.61, y=22.01, z=293.48], ajk['Bat'/2236, l='MpServer', x=11.86, y=20.84, z=294.69], anu['Zombie'/1990, l='MpServer', x=39.50, y=21.00, z=179.50], anl['Skeleton'/1996, l='MpServer', x=14.50, y=17.00, z=268.50], anl['Skeleton'/2252, l='MpServer', x=-68.50, y=18.00, z=181.50], anl['Skeleton'/2253, l='MpServer', x=-65.50, y=18.00, z=180.50], anl['Skeleton'/2254, l='MpServer', x=-65.50, y=18.00, z=186.50], anl['Skeleton'/2255, l='MpServer', x=-66.50, y=18.00, z=184.50], akg['Squid'/2002, l='MpServer', x=-82.70, y=59.17, z=264.47], akg['Squid'/2003, l='MpServer', x=-85.59, y=60.87, z=261.18], akg['Squid'/2004, l='MpServer', x=-82.09, y=62.32, z=259.17], akg['Squid'/2005, l='MpServer', x=-83.57, y=62.48, z=250.26], amu['Enderman'/2264, l='MpServer', x=8.50, y=49.00, z=299.50], amr['Creeper'/2265, l='MpServer', x=12.50, y=49.00, z=302.50], anu['Zombie'/2270, l='MpServer', x=29.50, y=64.00, z=239.50], anl['Skeleton'/1759, l='MpServer', x=21.26, y=35.00, z=289.52], ctb['Asteraoth'/225, l='MpServer', x=-36.83, y=63.00, z=225.18], amr['Creeper'/749, l='MpServer', x=-50.81, y=48.00, z=279.48], anl['Skeleton'/1774, l='MpServer', x=-55.50, y=13.00, z=160.50], anl['Skeleton'/239, l='MpServer', x=-88.50, y=43.00, z=250.50], amr['Creeper'/752, l='MpServer', x=-86.50, y=9.00, z=254.50], anl['Skeleton'/1779, l='MpServer', x=-55.50, y=13.00, z=162.50], amk['Wheat Seeds'/765, l='MpServer', x=20.88, y=13.00, z=263.66]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at cqy.a(SourceFile:399)
at cfl.b(SourceFile:1821)
at cfl.a(SourceFile:407)
at net.minecraft.client.main.Main.main(SourceFile:144)
-- System Details --
Details:
Minecraft Version: 18w30b
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: 482312784 bytes (459 MB) / 1358954496 bytes (1296 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
Launched Version: 18w30b
LWJGL: 3.1.6 build 14
OpenGL: GeForce 840M/PCIe/SSE2 GL version 4.6.0 NVIDIA 398.11, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.
Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 8x Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz
Confirmed. Does not occur with other skulls/heads.