**Apache Airflow version**:

1.10.12

**What happened**:

I created dag with dagrun_timeout=2 minutes. 

After 2 minutes dagrun is marked as failed and the next one is started, but task keeps going.

**What you expected to happen**:

Task is killed with dag run as it is done when you mark dagrun failed manually.

**How to reproduce it**:
```
dag = DAG(dag_id='platform.airflow-test',
          description='',
          schedule_interval="0 0 * * *",
          start_date=datetime(2020, 7, 1),
          max_active_runs=1,
          catchup=True,
          dagrun_timeout=timedelta(minutes=2))

run_this = BashOperator(
    task_id='run_after_loop',
    bash_command=' for((i=1;i<=600;i+=1)); do echo "Welcome $i times"; sleep 1;  done',
    dag=dag,
)
```
tests/jobs/test_scheduler_job.py
ti1.state = State.SUCCESS
        ti3 = dag_run.get_task_instance(task3.task_id, session)
        ti3.state = State.RUNNING
        session.flush()
        
        num_queued = job._do_scheduling(session)
        assert num_queued == 1
        
        ti2 = dag_run.get_task_instance(task2.task_id, session)
        assert ti2.state == State.QUEUED
        ti2.state = None
        session.flush()
        
        manual_run = dag.create_dagrun(
            run_type=DagRunType.MANUAL,
            execution_date=DEFAULT_DATE + timedelta(hours=1),
            state=State.RUNNING,
            session=session,
        )
        session.flush()
        num_queued = job._do_scheduling(session)
        assert num_queued == 1
        
        ti2 = dag_run.get_task_instance(task2.task_id, session)
        assert ti2.state == State.QUEUED
        
        ti1 = manual_run.get_task_instance(task1.task_id, session)
        assert ti1.state is None
@pytest.mark.xfail(reason="Work out where this goes")
def test_task_with_upstream_skip_process_task_instances():