[scheduler]
   [[events]]
       expected task failures = 1/b

[scheduling]
    [[graph]]
        R1 = """
            a => b => c
        """

[runtime]
    [[b]]
        script = """
            # test $CYLC_TASK_SUBMIT_NUMBER -gt 1
            if [[ $CYLC_TASK_SUBMIT_NUMBER -eq 1 ]]; then
                cylc trigger --flow=new "$CYLC_WORKFLOW_ID//1/a"
                false
            fi
        """
    [[a,c]]
