encryption.innodb_encrypt_temporary_tables failed in buildbot with wrong result

encryption.innodb_encrypt_temporary_tables 'cbc,innodb' w1 [ fail ]

        Test ended at 2019-07-22 11:11:28

CURRENT_TEST: encryption.innodb_encrypt_temporary_tables

--- /home/buildbot/buildbot/build/mariadb-10.2.26/mysql-test/suite/encryption/r/innodb_encrypt_temporary_tables.result	2019-07-22 08:31:21.000000000 -0400

+++ /home/buildbot/buildbot/build/mariadb-10.2.26/mysql-test/suite/encryption/r/innodb_encrypt_temporary_tables.reject	2019-07-22 11:11:28.235518198 -0400

@@ -12,7 +12,7 @@

 SELECT variable_value > @old_encrypted FROM information_schema.global_status

 WHERE variable_name = 'innodb_encryption_n_temp_blocks_encrypted';

 variable_value > @old_encrypted

-1

+0

 SELECT variable_value > @old_decrypted FROM information_schema.global_status

 WHERE variable_name = 'innodb_encryption_n_temp_blocks_decrypted';

 variable_value > @old_decrypted

mysqltest: Result content mismatch