Galera test failure on galera_sst_mysqldump_with_key

worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019

galera.galera_sst_mysqldump_with_key 'xtradb' [ pass ]  48621

MTR's internal check of the test case 'galera.galera_sst_mysqldump_with_key' failed.

This means that the test case does not preserve the state that existed

before the test case was executed.  Most likely the test case did not

do a proper clean-up. It could also be caused by the previous test run

by this thread, if the server wasn't restarted.

This is the diff of the states of the servers before and after the

test case was executed:

mysqltest: Logging to '/home/jan/mysql/10.1-orig/mysql-test/var/tmp/check-mysqld_2.log'.

mysqltest: Results saved in '/home/jan/mysql/10.1-orig/mysql-test/var/tmp/check-mysqld_2.result'.

mysqltest: Connecting to server localhost:16001 (socket /home/jan/mysql/10.1-orig/mysql-test/var/tmp/mysqld.2.sock) as 'root', connection 'default', attempt 0 ...

mysqltest: ... Connected.

mysqltest: Start processing test commands from './include/check-testcase.test' ...

mysqltest: ... Done processing test commands.

--- /home/jan/mysql/10.1-orig/mysql-test/var/tmp/check-mysqld_2.result	2018-07-27 08:19:53.178176516 +0300

+++ /home/jan/mysql/10.1-orig/mysql-test/var/tmp/check-mysqld_2.reject	2018-07-27 08:20:42.202180778 +0300

@@ -635,7 +635,7 @@

 WSREP_SST_DONOR_REJECTS_QUERIES	OFF

 WSREP_SST_METHOD	rsync

 WSREP_SST_RECEIVE_ADDRESS	127.0.0.1:16007

-WSREP_START_POSITION	00000000-0000-0000-0000-000000000000:-1

+WSREP_START_POSITION	aecfdfd3-915c-11e8-a2e5-b7115674f653:9

 WSREP_SYNC_WAIT	15

 CATALOG_NAME	SCHEMA_NAME	DEFAULT_CHARACTER_SET_NAME	DEFAULT_COLLATION_NAME	SQL_PATH

 def	information_schema	utf8	utf8_general_ci	NULL

mysqltest: Result length mismatch

not ok