Hi!

I develop the Mathworks Polyspace plugin: 
https://github.com/jenkinsci/mathworks-polyspace-plugin. 

I have some helpers in my plugin to allow the users to call some utilities 
in the plugin from their script. It was working since the beginning but I 
recently realized it was not anymore. When I call them from a job in 
Jenkins, it fails:
 
java -cp 
/var/lib/jenkins/plugins/mathworks-polyspace/WEB-INF/lib/mathworks-polyspace.jar
 
com.mathworks.polyspace.jenkins.PolyspaceHelpers
Error: Could not find or load main class 
com.mathworks.polyspace.jenkins.PolyspaceHelpers
Caused by: java.lang.ClassNotFoundException: 
com.mathworks.polyspace.jenkins.PolyspaceHelpers
 
When I call them from the server command line, it works:
 
> java -cp 
/var/lib/jenkins/plugins/mathworks-polyspace/WEB-INF/lib/mathworks-polyspace.jar
 
com.mathworks.polyspace.jenkins.PolyspaceHelpers
Usage: ps_helper -report-filter <original_report> <filtered_report> 
[<owner>] [<title> <value>]+
Usage: ps_helper -report-status <report> <nb_to_fail>
Usage: ps_helper -report-count-findings <report>
Usage: ps_helper -print-runid <prs upload output>
Usage: ps_helper -print-projectid <prs upload output>
Usage: ps_helper -print-projecturl <prs upload output> <prs_url>
 
I checked the problem show even with my oldest plugin version which was 
supposed to work from the beginning. Anything has changed on Jenkins’ side 
with newer versions? Is there anything recently that forbids calling 
helpers from a job that way?

Any help understanding what is happening would be welcome!

Stéphane

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