stop and retrigger a jenkins job using groovy

import jenkins.model.Jenkins
import hudson.model.ParametersAction
import hudson.model.BooleanParameterValue
import hudson.model.Result
import hudson.model.Run
import org.jenkinsci.plugins.workflow.job.WorkflowRun
import org.jenkinsci.plugins.workflow.support.steps.StageStepExecution
import org.jenkinsci.plugins.workflow.job.WorkflowJob

//Get the PR Number
def thr = Thread.currentThread()
def build = thr?.executable
def resolver = build.buildVariableResolver
def PRNum = resolver.resolve("ghprbPullId")

// Get the channel to later connect to the slave to get the file
if(manager.build.workspace.isRemote()){
  channel = manager.build.workspace.channel
}

// Connect to the slave to copy the file
manager.listener.logger.println("Copying the file from the remote slave...");
String fp = manager.build.workspace.getRemote().toString() + "/env_vars";
remoteFile = new hudson.FilePath(channel, fp);

projectWorkspaceOnMaster = new hudson.FilePath(new File(manager.build.getProject().getRootDir(), "workspace"));
projectWorkspaceOnMaster.mkdirs();
File localFile = File.createTempFile("jenkins","parameter");
remoteFile.copyTo(new hudson.FilePath(localFile));
manager.listener.logger.println("Done copying");

// sleep a bit to wait jenkins refresh the jobs
sleep(3000);

def params = [ ];

// Get the PR Job
def job = Jenkins.instance.getItemByFullName("tectonic-installer/PR-" + PRNum)

// If job is in the queue wait for that
manager.listener.logger.println(job.isInQueue());
while(job.isInQueue()) {
  manager.listener.logger.println("Job in the queue, waiting....");
  sleep(1000);
}

for (prBuild in job.builds) {
  if (prBuild.getNumber().toInteger() == 1 && prBuild.isBuilding()) {
    manager.listener.logger.println("Build 1 is running, will try to kill...");
    WorkflowRun run = (WorkflowRun) prBuild;
    //hard kill
    run.doKill();

    while(prBuild.isBuilding()) {
      manager.listener.logger.println("Trying to kill the job....");
      run.doKill();
      sleep(1000);
     }

    manager.listener.logger.println("Job Killed");
    //release pipeline concurrency locks
    StageStepExecution.exit(run);

    sleep(1000);
    // Load the File and set the job trigger
    Properties properties = new Properties();
    localFile.withInputStream {
        properties.load(it);
    }
    properties.each { prop, val ->
      temp = new BooleanParameterValue(prop,val.toBoolean());
      params.add(temp);
    }
    sleep(5000);
    manager.listener.logger.println("Will trigger new build...");
    job.scheduleBuild2(5, null, new ParametersAction(params));
    manager.listener.logger.println("New job triggered");
    break;
  }
}
manager.listener.logger.println("Done");