[JENKINS-18836] java.io.IOException: Unexpected termination of the channel

[jenkins-infra-bot]

On regular occasion builds fail due to an IO error while processing the findbugs results:

09:05:12 ERROR: Publisher hudson.plugins.findbugs.FindBugsPublisher aborted due to exception
09:05:12 hudson.remoting.RequestAbortedException: hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected termination of the channel
09:05:12 	at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:41)
09:05:12 	at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:34)
09:05:12 	at hudson.remoting.Request.call(Request.java:174)
09:05:12 	at hudson.remoting.Channel.call(Channel.java:718)
09:05:12 	at hudson.FilePath.act(FilePath.java:894)
09:05:12 	at hudson.FilePath.act(FilePath.java:878)
09:05:12 	at hudson.plugins.findbugs.FindBugsPublisher.perform(FindBugsPublisher.java:161)
09:05:12 	at hudson.plugins.analysis.core.HealthAwarePublisher.perform(HealthAwarePublisher.java:144)
09:05:12 	at hudson.plugins.analysis.core.HealthAwareRecorder.perform(HealthAwareRecorder.java:334)
09:05:12 	at hudson.tasks.BuildStepMonitor$2.perform(BuildStepMonitor.java:27)
09:05:12 	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:804)
09:05:12 	at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:776)
09:05:12 	at hudson.model.Build$BuildExecution.post2(Build.java:183)
09:05:12 	at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:726)
09:05:12 	at hudson.model.Run.execute(Run.java:1618)
09:05:12 	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
09:05:12 	at hudson.model.ResourceController.execute(ResourceController.java:88)
09:05:12 	at hudson.model.Executor.run(Executor.java:247)
09:05:12 Caused by: hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected termination of the channel
09:05:12 	at hudson.remoting.Request.abort(Request.java:299)
09:05:13 	at hudson.remoting.Channel.terminate(Channel.java:778)
09:05:15 	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:69)
09:05:15 Caused by: java.io.IOException: Unexpected termination of the channel
09:05:15 	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50)
09:05:16 Caused by: java.io.EOFException
09:05:16 	at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2595)
09:05:16 	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1315)
09:05:22 	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
09:05:22 	at hudson.remoting.Command.readFrom(Command.java:92)
09:05:22 	at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:72)
09:05:22 	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)

This doesn't happen every time, sometimes the build does finish properly. But when it fails, it's always at the same point.

None the less, I reverted back to 1.518 for now.

---

Originally reported by elmuerte, imported from: java.io.IOException: Unexpected termination of the channel

• assignee: kohsuke
• status: Resolved
• priority: Major
• component(s): ssh-slaves-plugin
• label(s): 1.532.1-fixed
• resolution: Fixed
• resolved: 2013-10-09T11:29:10+00:00
• votes: 4
• watchers: 13
• imported: 20251211-223321

Raw content of original issue

On regular occasion builds fail due to an IO error while processing the findbugs results:


09:05:12 ERROR: Publisher hudson.plugins.findbugs.FindBugsPublisher aborted due to exception
09:05:12 hudson.remoting.RequestAbortedException: hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected termination of the channel
09:05:12 	at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:41)
09:05:12 	at hudson.remoting.RequestAbortedException.wrapForRethrow(RequestAbortedException.java:34)
09:05:12 	at hudson.remoting.Request.call(Request.java:174)
09:05:12 	at hudson.remoting.Channel.call(Channel.java:718)
09:05:12 	at hudson.FilePath.act(FilePath.java:894)
09:05:12 	at hudson.FilePath.act(FilePath.java:878)
09:05:12 	at hudson.plugins.findbugs.FindBugsPublisher.perform(FindBugsPublisher.java:161)
09:05:12 	at hudson.plugins.analysis.core.HealthAwarePublisher.perform(HealthAwarePublisher.java:144)
09:05:12 	at hudson.plugins.analysis.core.HealthAwareRecorder.perform(HealthAwareRecorder.java:334)
09:05:12 	at hudson.tasks.BuildStepMonitor$2.perform(BuildStepMonitor.java:27)
09:05:12 	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:804)
09:05:12 	at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:776)
09:05:12 	at hudson.model.Build$BuildExecution.post2(Build.java:183)
09:05:12 	at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:726)
09:05:12 	at hudson.model.Run.execute(Run.java:1618)
09:05:12 	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
09:05:12 	at hudson.model.ResourceController.execute(ResourceController.java:88)
09:05:12 	at hudson.model.Executor.run(Executor.java:247)
09:05:12 Caused by: hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected termination of the channel
09:05:12 	at hudson.remoting.Request.abort(Request.java:299)
09:05:13 	at hudson.remoting.Channel.terminate(Channel.java:778)
09:05:15 	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:69)
09:05:15 Caused by: java.io.IOException: Unexpected termination of the channel
09:05:15 	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50)
09:05:16 Caused by: java.io.EOFException
09:05:16 	at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2595)
09:05:16 	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1315)
09:05:22 	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
09:05:22 	at hudson.remoting.Command.readFrom(Command.java:92)
09:05:22 	at hudson.remoting.ClassicCommandTransport.read(ClassicCommandTransport.java:72)
09:05:22 	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)


This doesn't happen every time, sometimes the build does finish properly. But when it fails, it's always at the same point. 
None the less, I reverted back to 1.518 for now.

environment

Ubuntu 12.04 64bit, OpenJDK 1.6.0_27 (both master and slaves)<br/>
Tried Jenkins versions 1.521, 1.522, 1.523<br/>

[jenkins-infra-bot]

drulli:

• Original comment link
• Raw content of original comment:

  Seems more likely a core problem. In 1.519 a new class loader has been introduced. Maybe that is also the reason for your problem.
  
  How is your slave and master connected? ssh?
  

Seems more likely a core problem. In 1.519 a new class loader has been introduced. Maybe that is also the reason for your problem.

How is your slave and master connected? ssh?

[jenkins-infra-bot]

elmuerte:

• Original comment link
• Raw content of original comment:

  Yes, ssh slaves
  

Yes, ssh slaves

[jenkins-infra-bot]

drulli:

• Original comment link
• Raw content of original comment:

  Can you please check if updating to the latest ssh-slaves plugin helps?
  

Can you please check if updating to the latest ssh-slaves plugin helps?

[jenkins-infra-bot]

dregin:

• Original comment link
• Raw content of original comment:

  Seeing similar here with SSH slaves.
  
  Updated to Jenkins 1.528 and SSH Slave plugin 1.2 - Still seeing the issue.
  

Seeing similar here with SSH slaves.

Updated to Jenkins 1.528 and SSH Slave plugin 1.2 - Still seeing the issue.

[jenkins-infra-bot]

drulli:

• Original comment link
• Raw content of original comment:

  Can you please check if your slave log has a lot of findbugs messages? Please see JENKINS-19619 for details.
  

Can you please check if your slave log has a lot of findbugs messages? Please see JENKINS-19619">JENKINS-19619 for details.

[jenkins-infra-bot]

dregin:

• Original comment link
• Raw content of original comment:

  Checked the logs for the slave in /home/jenkins/logs/slaves/ on the master and see no mention of findbugs.
  I can't see any logs stored on the slave itself.
  

Checked the logs for the slave in /home/jenkins/logs/slaves/ on the master and see no mention of findbugs.
I can't see any logs stored on the slave itself.

[jenkins-infra-bot]

scm_issue_link:

• Original comment link
• Raw content of original comment:

  Code changed in jenkins
  User: Stephen Connolly
  Path:
   src/com/trilead/ssh2/channel/Channel.java
  http://jenkins-ci.org/commit/trilead-ssh2/f1353cc0e0aa1b1e6bc845236e4a2530ea3103fd
  Log:
    [FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] remove double call of freeupWindow(len); when using ssh-slaves 0.27+
  
  
  	
  the more performant code path is only followed when using SSH Slaves 0.27+
  	
  the double call causes the channel to get torn down
  	
  thus excessive logging to stderr on the slave side of the connection will cause the connection to tear down
  	
  removing the duplicate call resolves the issue
  
  
  
  
  
  

Code changed in jenkins
User: Stephen Connolly
Path:
src/com/trilead/ssh2/channel/Channel.java
http://jenkins-ci.org/commit/trilead-ssh2/f1353cc0e0aa1b1e6bc845236e4a2530ea3103fd
Log:
[FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] remove double call of freeupWindow(len); when using ssh-slaves 0.27+

• the more performant code path is only followed when using SSH Slaves 0.27+
• the double call causes the channel to get torn down
• thus excessive logging to stderr on the slave side of the connection will cause the connection to tear down
• removing the duplicate call resolves the issue

[jenkins-infra-bot]

scm_issue_link:

• Original comment link
• Raw content of original comment:

  Code changed in jenkins
  User: Stephen Connolly
  Path:
   changelog.html
   core/pom.xml
  http://jenkins-ci.org/commit/jenkins/bb265c5e95b0fe39128720b903914236962db41b
  Log:
    [FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] Upgrade trilead-ssh to version with the fix
  
  
  
  

Code changed in jenkins
User: Stephen Connolly
Path:
changelog.html
core/pom.xml
http://jenkins-ci.org/commit/jenkins/bb265c5e95b0fe39128720b903914236962db41b
Log:
[FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] Upgrade trilead-ssh to version with the fix

[jenkins-infra-bot]

stephenconnolly:

• Original comment link
• Raw content of original comment:

  Fixed in Jenkins core 1.536
  

Fixed in Jenkins core 1.536

[jenkins-infra-bot]

dogfood:

• Original comment link
• Raw content of original comment:

  Integrated in  jenkins_main_trunk #2938
       [FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] Upgrade trilead-ssh to version with the fix (Revision bb265c5e95b0fe39128720b903914236962db41b)
  
       Result = UNSTABLE
  Stephen Connolly : bb265c5e95b0fe39128720b903914236962db41b
  Files : 
  
  	
  changelog.html
  	
  core/pom.xml
  
  
  

Integrated in jenkins_main_trunk #2938
[FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] Upgrade trilead-ssh to version with the fix (Revision bb265c5e95b0fe39128720b903914236962db41b)

Result = UNSTABLE
Stephen Connolly : bb265c5e95b0fe39128720b903914236962db41b
Files :

• changelog.html
• core/pom.xml

[jenkins-infra-bot]

scm_issue_link:

• Original comment link
• Raw content of original comment:

  Code changed in jenkins
  User: Stephen Connolly
  Path:
   core/pom.xml
  http://jenkins-ci.org/commit/jenkins/1bb06ada301496ebed6d212188d1b7c9d006317b
  Log:
    [FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] Upgrade trilead-ssh to version with the fix
  
  (cherry picked from commit bb265c5e95b0fe39128720b903914236962db41b)
  
  Conflicts:
  	changelog.html
  
  
  

Code changed in jenkins
User: Stephen Connolly
Path:
core/pom.xml
http://jenkins-ci.org/commit/jenkins/1bb06ada301496ebed6d212188d1b7c9d006317b
Log:
[FIXED JENKINS-18836][FIXED JENKINS-18879][FIXED JENKINS-19619] Upgrade trilead-ssh to version with the fix

(cherry picked from commit bb265c5e95b0fe39128720b903914236962db41b)

Conflicts:
changelog.html

[jenkins-infra-bot]

scm_issue_link:

• Original comment link
• Raw content of original comment:

  Code changed in jenkins
  User: Stephen Connolly
  Path:
   src/com/trilead/ssh2/channel/Channel.java
  http://jenkins-ci.org/commit/trilead-ssh2/5811ddd7ae15670a4f9ad345352613b3f2f2db97
  Log:
    JENKINS-22938 SSH slave connections die after the slave outputs 4MB of stderr, usually during findbugs analysis
  
  The fix for JENKINS-18836, JENKINS-18879, JENKINS-19619 was incorrect in its analysis.
  
  
  	
  There is no call to getChannelData() on the new code path, so thus you cannot have two calls of freeupWindow()
  	
  The problem with the original call to freeupWindow() is that it is on the receiver thread. You should not mix the responsibilities. Blocking the receiver thread to send a message will negatively impact performance and connection stability.
  	
  The correct solution is to push the freeupWindow onto the async queue thus the ACK gets sent and the purity of the receiving thread can be maintained.
  
  
  
  
  

Code changed in jenkins
User: Stephen Connolly
Path:
src/com/trilead/ssh2/channel/Channel.java
http://jenkins-ci.org/commit/trilead-ssh2/5811ddd7ae15670a4f9ad345352613b3f2f2db97
Log:
JENKINS-22938">JENKINS-22938 SSH slave connections die after the slave outputs 4MB of stderr, usually during findbugs analysis

The fix for JENKINS-18836">JENKINS-18836, JENKINS-18879">JENKINS-18879, JENKINS-19619">JENKINS-19619 was incorrect in its analysis.

• There is no call to getChannelData() on the new code path, so thus you cannot have two calls of freeupWindow()
• The problem with the original call to freeupWindow() is that it is on the receiver thread. You should not mix the responsibilities. Blocking the receiver thread to send a message will negatively impact performance and connection stability.
• The correct solution is to push the freeupWindow onto the async queue thus the ACK gets sent and the purity of the receiving thread can be maintained.

[jenkins-infra-bot]

totoroliu:

• Original comment link
• Raw content of original comment:

  Ubuntu 14.04 server 64-bit
  oracle-java7:  1.7.0_80
  Jenkins: 1.651.1 LTS
  SSH Slaves plugin: 1.11
  
  The build sometimes randomly failed with this kind of error.
  
  This time happened in the post-build actions:
  FATAL: channel is already closed
  hudson.remoting.ChannelClosedException: channel is already closed
  	at hudson.remoting.Channel.send(Channel.java:578)
  	at hudson.remoting.Request.call(Request.java:130)
  	at hudson.remoting.Channel.call(Channel.java:780)
  	at hudson.Launcher$RemoteLauncher.kill(Launcher.java:953)
  	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:540)
  	at hudson.model.Run.execute(Run.java:1738)
  	at hudson.matrix.MatrixBuild.run(MatrixBuild.java:313)
  	at hudson.model.ResourceController.execute(ResourceController.java:98)
  	at hudson.model.Executor.run(Executor.java:410)
  Caused by: java.io.IOException: Unexpected termination of the channel
  	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50)
  Caused by: java.io.EOFException
  	at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2325)
  	at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2794)
  	at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:801)
  	at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
  	at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:48)
  	at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:34)
  	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
  
  
  
  

Ubuntu 14.04 server 64-bit
oracle-java7: 1.7.0_80
Jenkins: 1.651.1 LTS
SSH Slaves plugin: 1.11

The build sometimes randomly failed with this kind of error.

This time happened in the post-build actions:
FATAL: channel is already closed
hudson.remoting.ChannelClosedException: channel is already closed
at hudson.remoting.Channel.send(Channel.java:578)
at hudson.remoting.Request.call(Request.java:130)
at hudson.remoting.Channel.call(Channel.java:780)
at hudson.Launcher$RemoteLauncher.kill(Launcher.java:953)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:540)
at hudson.model.Run.execute(Run.java:1738)
at hudson.matrix.MatrixBuild.run(MatrixBuild.java:313)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:410)
Caused by: java.io.IOException: Unexpected termination of the channel
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50)
Caused by: java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2325)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2794)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:801)
at java.io.ObjectInputStream.(ObjectInputStream.java:299)
at hudson.remoting.ObjectInputStreamEx.(ObjectInputStreamEx.java:48)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)

[jenkins-infra-bot]

ingunawa:

• Original comment link
• Raw content of original comment:

  Master: 1.580.3
  SSH Slave plugin: 1.8
  
  
  Killed by signal 15.
  FATAL: java.io.IOException: Unexpected termination of the channel
  hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected termination of the channel
  	at hudson.remoting.Request.abort(Request.java:295)
  	at hudson.remoting.Channel.terminate(Channel.java:814)
  	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:69)
  	at ......remote call to sym-bld-lnx8(Native Method)
  	at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1356)
  	at hudson.remoting.Request.call(Request.java:171)
  	at hudson.remoting.Channel.call(Channel.java:751)
  	at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:173)
  	at com.sun.proxy.$Proxy73.join(Unknown Source)
  	at hudson.Launcher$RemoteLauncher$ProcImpl.join(Launcher.java:979)
  	at hudson.tasks.CommandInterpreter.join(CommandInterpreter.java:137)
  	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:97)
  	at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:66)
  	at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
  	at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:770)
  	at hudson.model.Build$BuildExecution.build(Build.java:199)
  	at hudson.model.Build$BuildExecution.doRun(Build.java:160)
  	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:533)
  	at hudson.model.Run.execute(Run.java:1745)
  	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
  	at hudson.model.ResourceController.execute(ResourceController.java:89)
  	at hudson.model.Executor.run(Executor.java:240)
  Caused by: java.io.IOException: Unexpected termination of the channel
  	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50)
  Caused by: java.io.EOFException
  	at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2325)
  	at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2794)
  	at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:801)
  	at java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
  	at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:40)
  	at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:34)
  	at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)
  

Master: 1.580.3
SSH Slave plugin: 1.8

Killed by signal 15.
FATAL: java.io.IOException: Unexpected termination of the channel
hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected termination of the channel
at hudson.remoting.Request.abort(Request.java:295)
at hudson.remoting.Channel.terminate(Channel.java:814)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:69)
at ......remote call to sym-bld-lnx8(Native Method)
at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1356)
at hudson.remoting.Request.call(Request.java:171)
at hudson.remoting.Channel.call(Channel.java:751)
at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:173)
at com.sun.proxy.$Proxy73.join(Unknown Source)
at hudson.Launcher$RemoteLauncher$ProcImpl.join(Launcher.java:979)
at hudson.tasks.CommandInterpreter.join(CommandInterpreter.java:137)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:97)
at hudson.tasks.CommandInterpreter.perform(CommandInterpreter.java:66)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:770)
at hudson.model.Build$BuildExecution.build(Build.java:199)
at hudson.model.Build$BuildExecution.doRun(Build.java:160)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:533)
at hudson.model.Run.execute(Run.java:1745)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:89)
at hudson.model.Executor.run(Executor.java:240)
Caused by: java.io.IOException: Unexpected termination of the channel
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:50)
Caused by: java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2325)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2794)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:801)
at java.io.ObjectInputStream.(ObjectInputStream.java:299)
at hudson.remoting.ObjectInputStreamEx.(ObjectInputStreamEx.java:40)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:48)