**Apache Airflow version**:

2.1.0

**Environment**:

- self hosted docker-compose based stack

**What happened**:

Using JDBCOperator if the sql result in an error we got only 
```
[2021-06-21 11:05:55,377] {local_task_job.py:151} INFO - Task exited with return code 1
```

Before upgrading from 2.0.1 we got error details in logs:
```
jaydebeapi.DatabaseError: java.sql.SQLException:... [MapR][DrillJDBCDriver](500165) Query execution error. Details: VALIDATION ERROR:...
``` 

**What you expected to happen**:

See `SQLException` in logs

**How to reproduce it**:

Perform a generic SQL task with broken SQL.

**Anything else we need to know**:

I think is somehow related to https://github.com/apache/airflow/commit/abcd48731303d9e141bdc94acc2db46d73ccbe12#diff-4fd3febb74d94b2953bf5e9b4a981b617949195f83d96f4a589c3078085959b7R202 
airflow/models/taskinstance.py
"""Key used to identify task instance."""
    dag_id: str
    task_id: str
    execution_date: datetime
    try_number: int = 1
    @property
    def primary(self) -> Tuple[str, str, datetime]:
        """Return task instance primary key part of the key"""
        return self.dag_id, self.task_id, self.execution_date
    @property
    def reduced(self) -> 'TaskInstanceKey':
        """Remake the key by subtracting 1 from try number to match in memory information"""
        return TaskInstanceKey(self.dag_id, self.task_id, self.execution_date, max(1, self.try_number - 1))
    def with_try_number(self, try_number: int) -> 'TaskInstanceKey':