2016-08-26 12:17 INFO     db_analyze    task    Running ANALYZE on database to improve performance.
2016-08-26 12:19 WARNING  apscheduler.scheduler                 Execution of job "* (trigger: interval[1:00:00], next run at: 2016-08-26 12:19:02 EEST)" skipped: maximum number of running instances reached (1)
Exception in thread APScheduler:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/apscheduler/schedulers/blocking.py", line 30, in _main_loop
    wait_seconds = self._process_jobs()
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/apscheduler/schedulers/base.py", line 960, in _process_jobs
    jobstore.update_job(job)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/apscheduler/jobstores/sqlalchemy.py", line 101, in update_job
    result = self.engine.execute(update)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1991, in execute
    return connection.execute(statement, *multiparams, **params)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 914, in execute
    return meth(self, multiparams, params)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/sql/elements.py", line 323, in _execute_on_connection
    return connection._execute_clauseelement(self, multiparams, params)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1010, in _execute_clauseelement
    compiled_sql, distilled_params
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1146, in _execute_context
    context)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1341, in _handle_dbapi_exception
    exc_info
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/util/compat.py", line 202, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_context
    context)
  File "/home/xxx/apps/flexget/local/lib/python2.7/site-packages/sqlalchemy/engine/default.py", line 450, in do_execute
    cursor.execute(statement, parameters)
OperationalError: (sqlite3.OperationalError) database is locked [SQL: u'UPDATE apscheduler_jobs SET next_run_time=?, job_state=? WHERE apscheduler_jobs.id = ?'] [parameters: (1472206742.394899, <read-only buffer for 0x7fd6b4014be0, size -1, offset 0 at 0x7fd6a85a5ef0>, '4b7429f83440f1967e4c5e82c357e52d4911ee88')]