I tried to reproduce this on a remote Linux agent by generating lots of output.

Pipeline script:

node('linux') {
    timestamps {
        stage('all') {
   echo 'Hello World'
   sh label: 'ls', script: 'ls -lgGR /bin /lib /lib64 /opt /usr'
        }
    }
}

Unfortunately, I could not reproduce the issue.

Could you try to runs the script on an OSX agent to verify whether it is related to cmakebuilder or to pipeline?

I've tried on another project - sleep hasn't helped there

I've added sleep for 5 seconds in the end after sh 'umount...'

Now log for ctest step is fully shown.

But still 'sh' step starts in the middle of ctest output.

Thanks for finding a related issue, I myself did not find one.

The plugin does not do anything special to capture the build output. It just takes a TaskListener and a Launcher from the StepContext and passes the listener to the launcher. The listener is supposed to handle any build output.

So I think this issue is related to JENKINS-32191, or at least to workflow plugin.

Please note that JENKINS-32191 has been marked as resolved with <https://issues.jenkins-ci.org/browse/JENKINS-32191?focusedCommentId=350722&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-350722> but the reason to resolve it is just a guess. Have you tried with inserting a 'sleep 3' command into your script as a workaround?

Output isn't fully showing even STDOUT. Maybe it has something to do with https://issues.jenkins-ci.org/browse/JENKINS-32191 ?

Could it be that ANY output written to STDERR is missing in the logs?