[pid:2197]: ERROR: test_backup15.test_backup15.test_backup15
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[pid:2197]: testtools.testresult.real._StringException: Traceback (most recent call last):
  File "/data/mci/dc41fec1571025320ae2c247fe08da4f/wiredtiger/test/suite/wttest.py", line 233, in _callTestMethod
    method()
  File "/data/mci/dc41fec1571025320ae2c247fe08da4f/wiredtiger/test/suite/test_backup15.py", line 114, in test_backup15
    self.compare_backups(self.uri, self.home_full, self.home_incr, str(self.bkup_id))
  File "/data/mci/dc41fec1571025320ae2c247fe08da4f/wiredtiger/test/suite/wtbackup.py", line 239, in compare_backups
    self.runWt(['-R', '-h', base_dir, 'verify', '-S', uri])
  File "/data/mci/dc41fec1571025320ae2c247fe08da4f/wiredtiger/test/suite/suite_subprocess.py", line 243, in runWt
    self.close_conn()
  File "/data/mci/dc41fec1571025320ae2c247fe08da4f/wiredtiger/test/suite/wttest.py", line 363, in close_conn
    self.conn.close(config)
  File "/data/mci/dc41fec1571025320ae2c247fe08da4f/wiredtiger/test/suite/wttest.py", line 80, in close
    return self._conn.close(config)
  File "/data/mci/dc41fec1571025320ae2c247fe08da4f/wiredtiger/cmake_build/lang/python/wiredtiger/swig_wiredtiger.py", line 736, in close
    return _wiredtiger.Connection_close(self, *args)
_wiredtiger.WiredTigerError: Device or resource busy
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Ran 14743 tests in 2271.296s