title: Try, catch breaking Jenkins pipeline parseScript
body: <p>I tried to implement an automatic cleanup of a failed Jenkins pipeline, so that docker-compose will delete the Docker containers.</p>
  
  <p>Unfortunately this creates an error in the run. What have I done wrong?</p>
  
  <pre><code>stage('Verification') {
    steps {
      try {
        sh '''
        docker-compose exec -T cli drush status
        docker-compose exec -T cli curl http://nginx:8080 -v
        if [ $? -eq 0 ]; then
          echo "OK!"
        else
          echo "FAIL"
          /bin/false
        fi
        docker-compose down
        '''
      }
      catch (e) {
        sh 'docker-compose down'
        throw e
      }
    }
  }
  </code></pre>
  
  <p>Error:</p>
  
  <pre><code>org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
  WorkflowScript: 37: Expected a step @ line 37, column 9.
             try {
             ^
  
  1 error
  
    at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
    at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1085)
    at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:603)
    at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581)
    at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558)
    at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
    at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
    at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
    at groovy.lang.GroovyShell.parse(GroovyShell.java:700)
    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.doParse(CpsGroovyShell.java:131)
    at org.jenkinsci.plugins.workflow.cps.CpsGroovyShell.reparse(CpsGroovyShell.java:125)
    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.parseScript(CpsFlowExecution.java:560)
    at org.jenkinsci.plugins.workflow.cps.CpsFlowExecution.start(CpsFlowExecution.java:521)
    at org.jenkinsci.plugins.workflow.job.WorkflowRun.run(WorkflowRun.java:320)
    at hudson.model.ResourceController.execute(ResourceController.java:97)
    at hudson.model.Executor.run(Executor.java:429)
  Finished: FAILURE
  </code></pre>