Change By: Ulli Hafner (11/Jan/14 11:34 AM)
Description: The version of Apache Commons Codec included with swarm-client-1.10-jar-with-dependencies.jar is to old for findbugs 4.51.  This results in the the following:

{norformat}
12:10:13 [FINDBUGS] Collecting findbugs analysis files...
12:10:18 ERROR: Publisher hudson.plugins.findbugs.FindBugsPublisher aborted due to exception
12:10:18 java.io.IOException: remote file operation failed: /var/lib/jenkins/workspace/SwtWidgets at hudson.remoting.Channel@68077427:daily-build
12:10:18  at hudson.FilePath.act(FilePath.java:910)
12:10:18  at hudson.FilePath.act(FilePath.java:887)
12:10:18  at hudson.plugins.findbugs.FindBugsPublisher.perform(FindBugsPublisher.java:161)
12:10:18  at hudson.plugins.analysis.core.HealthAwarePublisher.perform(HealthAwarePublisher.java:144)
12:10:18  at hudson.plugins.analysis.core.HealthAwareRecorder.perform(HealthAwareRecorder.java:333)
12:10:18  at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
12:10:18  at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:785)
12:10:18  at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:757)
12:10:18  at hudson.model.Build$BuildExecution.post2(Build.java:183)
12:10:18  at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:706)
12:10:18  at hudson.model.Run.execute(Run.java:1703)
12:10:18  at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
12:10:18  at hudson.model.ResourceController.execute(ResourceController.java:88)
12:10:18  at hudson.model.Executor.run(Executor.java:231)
12:10:18 Caused by: java.io.IOException: Remote call on daily-build failed
12:10:18  at hudson.remoting.Channel.call(Channel.java:731)
12:10:18  at hudson.FilePath.act(FilePath.java:903)
12:10:18  ... 13 more
12:10:18 Caused by: java.lang.NoSuchMethodError: org.apache.commons.codec.binary.Hex.encodeHexString([B)Ljava/lang/String;
12:10:18  at hudson.plugins.findbugs.parser.HexishString.toString(HexishString.java:58)
12:10:18  at hudson.plugins.findbugs.parser.HexishString.hashCode(HexishString.java:69)
12:10:18  at hudson.plugins.findbugs.parser.Bug.hashCode(Bug.java:328)
12:10:18  at java.util.HashMap.hash(HashMap.java:366)
12:10:18  at java.util.HashMap.put(HashMap.java:496)
12:10:18  at java.util.HashSet.add(HashSet.java:217)
12:10:18  at hudson.plugins.analysis.core.ParserResult.addAnnotation(ParserResult.java:229)
12:10:18  at hudson.plugins.analysis.core.ParserResult.addAnnotations(ParserResult.java:242)
12:10:18  at hudson.plugins.analysis.core.FilesParser.parseFile(FilesParser.java:307)
12:10:18  at hudson.plugins.analysis.core.FilesParser.parseFiles(FilesParser.java:264)
12:10:18  at hudson.plugins.analysis.core.FilesParser.parserCollectionOfFiles(FilesParser.java:215)
12:10:18  at hudson.plugins.analysis.core.FilesParser.invoke(FilesParser.java:184)
12:10:18  at hudson.plugins.analysis.core.FilesParser.invoke(FilesParser.java:31)
12:10:18  at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2461)
12:10:18  at hudson.remoting.UserRequest.perform(UserRequest.java:118)
12:10:18  at hudson.remoting.UserRequest.perform(UserRequest.java:48)
12:10:18  at hudson.remoting.Request$2.run(Request.java:326)
12:10:18  at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
12:10:18  at java.util.concurrent.FutureTask.run(FutureTask.java:262)
12:10:18  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
12:10:18  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
12:10:18  at hudson.remoting.Engine$1$1.run(Engine.java:63)
12:10:18  at java.lang.Thread.run(Thread.java:744)
{noformat}

Unpacking swarm-client-1.10-jar-with-dependencies.jar and replacing everything under org/apache/commons/codec with the 1.9 version of Apache Commons Codec fixed the problem.

Here is the dependency tree of the swarm plugin:
{noformat}
[INFO] org.jenkins-ci.plugins:swarm-client:jar:1.11-SNAPSHOT
[INFO] +- args4j:args4j:jar:2.0.21:compile
[INFO] +- org.jenkins-ci.main:remoting:jar:2.32:compile
[INFO] |  +- org.apache.ant:ant:jar:1.8.3:compile
[INFO] |  |  \- org.apache.ant:ant-launcher:jar:1.8.3:compile
[INFO] |  \- org.jenkins-ci:constant-pool-scanner:jar:1.2:compile
[INFO] +- commons-httpclient:commons-httpclient:jar:3.1:compile
[INFO] |  +- commons-logging:commons-logging:jar:1.0.4:compile
[INFO] |  \- commons-codec:commons-codec:jar:1.2:compile
{noformat}
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