Traceback (most recent call last):
  File "autoland_queue.py", line 24, in <module>
    db = DBHandler('sqlite:///test/autoland.sqlite')
  File "/root/lsblakk-tools/scripts/autoland/utils/db_handler.py", line 14, in __init__
    self.scheduler_db_meta = MetaData(bind=self.engine, reflect=True)
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/schema.py", line 2237, in __init__
    self.reflect()
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/schema.py", line 2386, in reflect
    Table(name, self, **reflect_opts)
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/schema.py", line 265, in __new__
    table._init(name, metadata, *args, **kw)
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/schema.py", line 335, in _init
    self, include_columns
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 2264, in run_callable
    return conn.run_callable(callable_, *args, **kwargs)
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/engine/base.py", line 1894, in run_callable
    return callable_(self, *args, **kwargs)
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/engine/default.py", line 254, in reflecttable
    return insp.reflecttable(table, include_columns)
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/engine/reflection.py", line 399, in reflecttable
    sql.text(col_d['default']), _reflected=True
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/sql/expression.py", line 1052, in text
    return _TextClause(text, bind=bind, *args, **kwargs)
  File "/root/autoland-env/lib/python2.6/site-packages/sqlalchemy/sql/expression.py", line 2744, in __init__
    self.text = self._bind_params_regex.sub(repl, text)
TypeError: expected string or buffer