sanity test_409 fail to clean up the tes directory because the “Directory is not empty”. From the suite_log, we see
The test suite also fails to clean up the test directory for the same reason
In some of these failures, we see files from a different sanity test that cannot be removed
In all of these cases, the test that left a directory and files that cannot be removed did not fail … at least, they did not fail with a call to error().
Test suites after sanity will also fail trying to remove the contents of the mount point with this error
sanity test 409 started failing with this error starting on 2017-11-22.
Some logs for these failures are at