jenkinsfile-runner looks awesome, but it doesn't give any meaningful output when it fails. There seems to be no verbose mode and no obvious log files with useful output. The docs lack any kind of troubleshooting guide, so I'm basically no able to evaluate this further.
docker run -it -v $PWD/jenkinsfile-runner:/var/jenkinsfile-runner -v $PWD/smartly-ansible:/workspace -v jenkinsfile-runner-cache:/var/jenkinsfile-runner-cache jenkins/jenkinsfile-runner
Downloading latestCore ...
Running Pipeline on jenkins 2.138.1
Starting Jenkins...
Running from: /var/jenkinsfile-runner-cache/war/jenkins-2.138.1.war
webroot: EnvVars.masterEnvVars.get("JENKINS_HOME")
Jenkins home directory: /var/jenkinsfile-runner found at: EnvVars.masterEnvVars.get("JENKINS_HOME")
Started
Running in Durability level: PERFORMANCE_OPTIMIZED
cmd.Start() failed with exit status 255Something went wrong running your Jenkinsfile.
If you think this is a bug, please report on https://github.com/ndeloof/jenkinsfile-runner/issuesand if you miss some feature, please join https://gitter.im/jenkinsci/jenkinsfile-runner to discuss about it.