Note: "Clean Build" is NOT checked. But if I check it, the same problem happens.

Error log:

Started by user The User
Building remotely on mybuildslave in workspace /jenkins-slave/workspace/MYPROJ-2.8.3
ERROR: Failed to clean the repository checkout
hudson.util.IOException2: remote file operation failed: /jenkins-slave/workspace/MYPROJ-2.8.3 at hudson.remoting.Channel@3d08761:mybuildslave
at hudson.FilePath.act(FilePath.java:861)
at hudson.FilePath.act(FilePath.java:838)
at hudson.FilePath.deleteRecursive(FilePath.java:997)
at hudson.plugins.mercurial.MercurialSCM.clone(MercurialSCM.java:547)
at hudson.plugins.mercurial.MercurialSCM.checkout(MercurialSCM.java:389)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1353)
at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:689)
at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:594)
at hudson.model.Run.execute(Run.java:1567)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:477)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:237)
Caused by: java.io.IOException: Unable to delete /jenkins-slave/workspace/MYPROJ-2.8.3/war/WebContent/portais/suprimentos/servicos/catalogacao/img - files in dir: [/jenkins-slave/workspace/MYPROJ-2.8.3/war/WebContent/portais/suprimentos/servicos/catalogacao/img/Grafico_Cataloga??o_r1_c3.gif, /jenkins-slave/workspace/MYPROJ-2.8.3/war/WebContent/portais/suprimentos/servicos/catalogacao/img/Grafico_Cataloga??o_r1_c1_f2.gif,]
at hudson.Util.deleteFile(Util.java:242)
at hudson.Util.deleteRecursive(Util.java:293)
at hudson.Util.deleteContentsRecursive(Util.java:204)
at hudson.Util.deleteRecursive(Util.java:284)
at hudson.Util.deleteContentsRecursive(Util.java:204)
at hudson.Util.deleteRecursive(Util.java:284)
at hudson.Util.deleteContentsRecursive(Util.java:204)
at hudson.Util.deleteRecursive(Util.java:284)
at hudson.Util.deleteContentsRecursive(Util.java:204)
at hudson.Util.deleteRecursive(Util.java:284)
at hudson.Util.deleteContentsRecursive(Util.java:204)
at hudson.Util.deleteRecursive(Util.java:284)
at hudson.Util.deleteContentsRecursive(Util.java:204)
at hudson.Util.deleteRecursive(Util.java:284)
at hudson.Util.deleteContentsRecursive(Util.java:204)
at hudson.Util.deleteRecursive(Util.java:284)
at hudson.FilePath$11.invoke(FilePath.java:1000)
at hudson.FilePath$11.invoke(FilePath.java:997)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2348)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:73)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
ERROR: Failed to clean the repository checkout
Archiving artifacts
Build step 'Dependency analysis' marked build as failure