mojira.dev
MC-77095

Exceptions in Console when quitting/entering the game: java.util.concurrent.FutureTask.report

When entering a world in Realms or a server the console sometimes gets spammed with:

1.8.2-pre6

[10:11:14] [Client thread/INFO]: Setting user: Kumasasa
[10:11:14] [Client thread/INFO]: (Session ID is token:b169d5f70d1746778d0293048e5e0917:212c6adb6aad4b04ab210d52a98931c0)
[10:11:16] [Client thread/INFO]: LWJGL Version: 2.9.3
[10:11:17] [Client thread/INFO]: Reloading ResourceManager: Default
[10:11:17] [Sound Library Loader/INFO]: Starting up SoundSystem...
[10:11:18] [Thread-6/INFO]: Initializing LWJGL OpenAL
[10:11:18] [Thread-6/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[10:11:18] [Thread-6/INFO]: OpenAL initialized.
[10:11:18] [Sound Library Loader/INFO]: Sound engine started
[10:11:22] [Client thread/INFO]: Created: 512x512 textures-atlas
[10:11:32] [Client thread/INFO]: Realms library version == 1.7.8-pre2
[10:11:33] [MCO Availability Checker #1/INFO]: Realms is available for this user
[10:11:57] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre6.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre6.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre6.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre6.jar:?]
Caused by: java.lang.NullPointerException
	at gw.a(SourceFile:153) ~[1.8.2-pre6.jar:?]
	at bcz.a(SourceFile:355) ~[1.8.2-pre6.jar:?]
	at gw.a(SourceFile:144) ~[1.8.2-pre6.jar:?]
	at gw$b.a(SourceFile:21) ~[1.8.2-pre6.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre6.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre6.jar:?]
	... 3 more
[10:11:57] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre6.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre6.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre6.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre6.jar:?]
Caused by: java.lang.NullPointerException
	at hg.a(SourceFile:42) ~[1.8.2-pre6.jar:?]
	at bcz.a(SourceFile:374) ~[1.8.2-pre6.jar:?]
	at hg.a(SourceFile:38) ~[1.8.2-pre6.jar:?]
	at hg.a(SourceFile:11) ~[1.8.2-pre6.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre6.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre6.jar:?]
	... 3 more
[10:11:57] [Client thread/FATAL]: Error executing task

1.8.2-pre7

[17:59:49] [Client thread/INFO]: Setting user: Kumasasa
[17:59:49] [Client thread/INFO]: (Session ID is token:c4cef29a5ab94c5f97380f862ce93d68:212c6adb6aad4b04ab210d52a98931c0)
[17:59:51] [Client thread/INFO]: LWJGL Version: 2.9.4
[17:59:53] [Client thread/INFO]: Reloading ResourceManager: Default, Misa Patch Les 1.8.zip, Misa.zip, XDBMisaPatchV1.4.zip
[17:59:53] [Client thread/WARN]: ResourcePack: ignored non-lowercase namespace: %s in %s
[17:59:56] [Sound Library Loader/INFO]: Starting up SoundSystem...
[17:59:57] [Thread-6/INFO]: Initializing LWJGL OpenAL
[17:59:57] [Thread-6/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[17:59:57] [Thread-6/INFO]: OpenAL initialized.
[17:59:57] [Sound Library Loader/INFO]: Sound engine started
[18:00:20] [Client thread/INFO]: Created: 2048x2048 textures-atlas
[18:00:43] [Client thread/INFO]: Realms library version == 1.7.8-pre3
[18:00:44] [MCO Availability Checker #1/INFO]: Realms is available for this user
[18:00:54] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre7.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre7.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre7.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre7.jar:?]
Caused by: java.lang.NullPointerException
	at gj.a(SourceFile:42) ~[1.8.2-pre7.jar:?]
	at bcz.a(SourceFile:655) ~[1.8.2-pre7.jar:?]
	at gj.a(SourceFile:38) ~[1.8.2-pre7.jar:?]
	at gj.a(SourceFile:11) ~[1.8.2-pre7.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre7.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre7.jar:?]
	... 3 more
[18:00:54] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at h.a(SourceFile:61) [1.8.2-pre7.jar:?]
	at avf.au(SourceFile:878) [1.8.2-pre7.jar:?]
	at avf.a(SourceFile:323) [1.8.2-pre7.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.2-pre7.jar:?]
Caused by: java.lang.NullPointerException
	at hg.a(SourceFile:42) ~[1.8.2-pre7.jar:?]
	at bcz.a(SourceFile:374) ~[1.8.2-pre7.jar:?]
	at hg.a(SourceFile:38) ~[1.8.2-pre7.jar:?]
	at hg.a(SourceFile:11) ~[1.8.2-pre7.jar:?]
	at fi$1.run(SourceFile:13) ~[1.8.2-pre7.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at h.a(SourceFile:60) ~[1.8.2-pre7.jar:?]
	... 3 more
[18:03:35] [Client thread/INFO]: Stopping!
[18:03:35] [Client thread/INFO]: SoundSystem shutting down...
[18:03:36] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
[23:23:12] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at g.a(SourceFile:61) [1.8.7.jar:?]
	at ave.av(SourceFile:880) [1.8.7.jar:?]
	at ave.a(SourceFile:325) [1.8.7.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.7.jar:?]
Caused by: java.lang.NullPointerException
	at gv.a(SourceFile:153) ~[1.8.7.jar:?]
	at bcy.a(SourceFile:355) ~[1.8.7.jar:?]
	at gv.a(SourceFile:144) ~[1.8.7.jar:?]
	at gv$a.a(SourceFile:61) ~[1.8.7.jar:?]
	at fh$1.run(SourceFile:13) ~[1.8.7.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at g.a(SourceFile:60) ~[1.8.7.jar:?]
	... 3 more
[23:23:12] [Client thread/FATAL]: Error executing task

1.8.8

[22:50:38] [Client thread/INFO]: Realms library version == 1.7.31
[22:50:40] [MCO Availability Checker #1/INFO]: Realms is available for this user
...
[23:53:39] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at g.a(SourceFile:45) [1.8.8.jar:?]
	at ave.av(SourceFile:881) [1.8.8.jar:?]
	at ave.a(SourceFile:325) [1.8.8.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
Caused by: java.lang.NullPointerException
	at bcy.a(SourceFile:277) ~[1.8.8.jar:?]
	at hm.a(SourceFile:66) ~[1.8.8.jar:?]
	at hm.a(SourceFile:9) ~[1.8.8.jar:?]
	at fh$1.run(SourceFile:13) ~[1.8.8.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at g.a(SourceFile:44) ~[1.8.8.jar:?]
	... 3 more
[23:53:39] [Client thread/FATAL]: Error executing task

Have no clear steps to reproduce, happens sometimes and sometimes not.

Linked issues

Comments 6

I got almost the same exception couple times a second (untill it crashes), while playing normal multi player.

[17:08:57] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_40-ea]
at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_40-ea]
at h.a(SourceFile:61) [1.8.3.jar:?]
at avf.av(SourceFile:880) [1.8.3.jar:?]
at avf.a(SourceFile:325) [1.8.3.jar:?]
at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.3.jar:?]
Caused by: java.lang.NullPointerException
at bcz.a(SourceFile:301) ~[1.8.3.jar:?]
at fq.a(SourceFile:75) ~[1.8.3.jar:?]
at fq.a(SourceFile:16) ~[1.8.3.jar:?]
at fi$1.run(SourceFile:13) ~[1.8.3.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_40-ea]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_40-ea]
at h.a(SourceFile:60) ~[1.8.3.jar:?]
... 3 more
AL lib: (EE) alc_cleanup: 1 device not closed

Can confirm happens in 15w51b, was not able to reproduce with subsequent connections.

This message is repeated over a hundred times in the launcher console output when connecting to a server I own:

15w51b

[06:27:56] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at g.a(SourceFile:46) [15w51b.jar:?]
	at bcb.as(SourceFile:934) [15w51b.jar:?]
	at bcb.a(SourceFile:386) [15w51b.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:122) [15w51b.jar:?]
Caused by: java.lang.NullPointerException
	at hg.a(SourceFile:42) ~[15w51b.jar:?]
	at bkh.a(SourceFile:516) ~[15w51b.jar:?]
	at hg.a(SourceFile:38) ~[15w51b.jar:?]
	at hg.a(SourceFile:11) ~[15w51b.jar:?]
	at fh$1.run(SourceFile:13) ~[15w51b.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at g.a(SourceFile:45) ~[15w51b.jar:?]
	... 3 more
[06:27:56] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at g.a(SourceFile:46) [15w51b.jar:?]
	at bcb.as(SourceFile:934) [15w51b.jar:?]
	at bcb.a(SourceFile:386) [15w51b.jar:?]
	at net.minecraft.client.main.Main.main(SourceFile:122) [15w51b.jar:?]
Caused by: java.lang.NullPointerException
	at gu.a(SourceFile:153) ~[15w51b.jar:?]
	at bkh.a(SourceFile:497) ~[15w51b.jar:?]
	at gu.a(SourceFile:144) ~[15w51b.jar:?]
	at gu$b.a(SourceFile:21) ~[15w51b.jar:?]
	at fh$1.run(SourceFile:13) ~[15w51b.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at g.a(SourceFile:45) ~[15w51b.jar:?]
	... 3 more

Client System Environment:

  • MC 15w51b

  • Java 8 Update 25

  • Windows 8.1 64bit

  • AMD FX6300 3.5GHz 6-core cpu

  • 12GB ram, 1GB allocated to client

  • AMD r9 280 gpu

Server System Environment:

  • MC 15w51b

  • Can't remember the specific java version, but should be latest Java 8 stable release as of 3 days ago

  • Ubuntu 14.04 64bit VPS

  • 2GB ram, 1.5gb allocated to server

  • Intel Xeon e3 cpu, 1 core granted

This also happens in singleplayer.

Yes, it's not really a difference.

Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.

This is an automated comment on any open or reopened issue with out-of-date affected versions.

Uriel Salischiker

Is this still a issue in the latest version of the game(currently 1.13.1)?

If so, please add it to the affected versions, thanks!

kumasasa

(Unassigned)

Community Consensus

Minecraft 1.8.2-pre6, Minecraft 1.8.2-pre7, Minecraft 1.8.3, Minecraft 1.8.7, Minecraft 1.8.8, ..., Minecraft 1.9.4, Minecraft 1.10, Minecraft 1.11.2, Minecraft 1.12.1, Minecraft 1.12.2

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