From https://ci.jenkins.io/blue/organizations/jenkins/jenkinsci-libraries%2Fplugin-compat-tester/detail/PR-194/11/pipeline . org.jenkins.tools.test.PluginCompatTesterTest does not seem to use the settings file properly for plugin tests on the Linux agent. I see the settings file in the command line tho

[2019-12-24T11:35:57.092Z] running [mvn, --show-version, --batch-mode, --settings=/home/jenkins/workspace/ries_plugin-compat-tester_PR-194/plugins-compat-tester/target/test-classes/m2-settings.xml, --define=failIfNoTests=false, clean, process-test-classes, -Dmaven.javadoc.skip] in /tmp/junit2590892589758669502/accurev >> /home/jenkins/workspace/ries_plugin-compat-tester_PR-194/plugins-compat-tester/../reports/logs/accurev/v0.7.22_against_org.jenkins-ci.plugins_plugin_1.410.log

Log:

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[2019-12-24T12:02:49.261Z] [INFO] Downloading from maven.jenkins-ci.org: http://maven.jenkins-ci.org/content/groups/artifacts/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.pom
[2019-12-24T12:03:21.313Z] [INFO] Downloading from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.pom
[2019-12-24T12:03:21.313Z] [INFO] Downloaded from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.pom (0 B at 0 B/s)
[2019-12-24T12:03:21.313Z] [INFO] Downloading from maven.jenkins-ci.org: http://maven.jenkins-ci.org/content/groups/artifacts/commons-collections/commons-collections/3.2/commons-collections-3.2.pom
[2019-12-24T12:03:53.369Z] [INFO] Downloading from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/commons-collections/commons-collections/3.2/commons-collections-3.2.pom
[2019-12-24T12:03:53.369Z] [INFO] Downloaded from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/commons-collections/commons-collections/3.2/commons-collections-3.2.pom (0 B at 0 B/s)
[2019-12-24T12:03:53.369Z] [INFO] Downloading from maven.jenkins-ci.org: http://maven.jenkins-ci.org/content/groups/artifacts/commons-collections/commons-collections/3.2.2/commons-collections-3.2.2.pom
[2019-12-24T12:04:25.422Z] [INFO] Downloading from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/commons-collections/commons-collections/3.2.2/commons-collections-3.2.2.pom
[2019-12-24T12:04:25.422Z] [INFO] Downloaded from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/commons-collections/commons-collections/3.2.2/commons-collections-3.2.2.pom (0 B at 0 B/s)
[2019-12-24T12:04:25.422Z] [INFO] Downloading from maven.jenkins-ci.org: http://maven.jenkins-ci.org/content/groups/artifacts/org/dom4j/dom4j/2.1.1/dom4j-2.1.1.pom
[2019-12-24T12:04:57.474Z] [INFO] Downloading from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/org/dom4j/dom4j/2.1.1/dom4j-2.1.1.pom
[2019-12-24T12:04:57.474Z] [INFO] Downloaded from repo.jenkins-ci.org: https://repo.jenkins-ci.org/public/org/dom4j/dom4j/2.1.1/dom4j-2.1.1.pom (0 B at 0 B/s)
[2019-12-24T12:04:57.475Z] [INFO] Downloading from maven.jenkins-ci.org: http://maven.jenkins-ci.org/content/groups/artifacts/org/codehaus/groovy/groovy-all/2.4.11/groovy-all-2.4.11.pom
[2019-12-24T12:05:06.931Z] Sending interrupt signal to process