pipeline
{
    agent any
    stages
    {
        stage('Explore bug')
        {
            steps
            {
                script
                {
                    int maxIndex1=3
                    def loopers1 = [:]
                    for (int loopIndex1 = 0; loopIndex1 < maxIndex1; loopIndex1++)
                    {
                        echo "loopIndex1=${loopIndex1}"
                        loopers1["loop-${loopIndex1}"] =
                        {
                            echo "loopIndex1=${loopIndex1}"
                        }
                    }
                    parallel loopers1
                }
            }
        }
        stage('Bug workaround')
        {
            steps
            {
                script
                {
                    int maxIndex2=3
                    def loopers2 = [:]
                    for (int loopIndex2 = 0; loopIndex2 < maxIndex2; loopIndex2++)
                    {
                        int index2=loopIndex2
                        echo "index2=${index2}"
                        loopers2["loop-${index2}"] =
                        {
                            echo "index2=${index2}"
                        }
                    }
                    parallel loopers2
                }
            }
        }
    }
}