rocksdb.bulk_load test failed in buildbot, Error on delete of '/mnt/buildbot/build/mariadb-10.2.9/mysql-test/var/2/mysqld.1/data/test_loadfile.txt' (Errcode: 2 "No such file or directory")

Error on delete of '/mnt/buildbot/build/mariadb-10.2.9/mysql-test/var/2/mysqld.1/data/test_loadfile.txt' (Errcode: 2 "No such file or directory") 

rocksdb.bulk_load                        w2 [ fail ]

        Test ended at 2017-08-20 00:32:16

CURRENT_TEST: rocksdb.bulk_load

/mnt/buildbot/build/mariadb-10.2.9/client/mysqltest: Error on delete of '/mnt/buildbot/build/mariadb-10.2.9/mysql-test/var/2/mysqld.1/data/test_loadfile.txt' (Errcode: 2 "No such file or directory")

mysqltest: At line 11: command "remove_file" failed with error: 1  my_errno: 2  errno: 2

The result from queries just before the failure was:

< snip >

5000000

select count(a) from t2;

count(a)

5000000

select count(b) from t2;

count(b)

5000000

select count(pk) from t3;

count(pk)

5000000

select count(a) from t3;

count(a)

5000000

select count(b) from t3;

count(b)

5000000

longfilenamethatvalidatesthatthiswillgetdeleted.bulk_load.tmp

test.bulk_load.tmp

disconnect other;

DROP TABLE t1, t2, t3;