Logging: /home/mleich/Server/10.4/mysql-test/mysql-test-run.pl  --mem bs_2.test
vardir: /home/mleich/Server/10.4/bld_debug/mysql-test/var
Checking leftover processes...
Removing old var directory...
Creating var directory '/home/mleich/Server/10.4/bld_debug/mysql-test/var'...
 - symlinking 'var' to '/dev/shm/var_auto_Wzkk'
Checking supported features...
MariaDB Version 10.4.3-MariaDB-debug
 - SSL connections supported
 - binaries are debug compiled
Collecting tests...
Installing system database...

==============================================================================

TEST                                      RESULT   TIME (ms) or COMMENT
--------------------------------------------------------------------------

worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019
main.bs_2 'innodb'                       [ fail ]
        Test ended at 2019-02-18 22:12:05

CURRENT_TEST: main.bs_2
mysqltest: At line 124: 

The result from queries just before the failure was:
< snip >
   ALTER TABLE t0 DROP KEY `idx1`;
}
--echo # End   of SQL_FILE reached
End   of content of '/home/mleich/Server/10.4/bld_debug/mysql-test/var/tmp/sql.1' ----
Start executing '/home/mleich/Server/10.4/bld_debug/mysql-test/var/tmp/sql.1' at TS: 1550524323
End   executing '/home/mleich/Server/10.4/bld_debug/mysql-test/var/tmp/sql.1' at TS: 1550524323 and status was 1
Begin of       output ----
# Begin of SQL_FILE
SET AUTOCOMMIT = 0 ;
SET SESSION lock_wait_timeout = 2  ;
SET SESSION innodb_lock_wait_timeout = 1 ;
not ok
End   of       output ----
Begin of error output ----
mysqltest: At line 20: command "file_exists" failed with wrong error: 1  my_errno: 2  errno: 2
End   of error output ----
The file '/home/mleich/Server/10.4/bld_debug/mysql-test/var/tmp/run' does no more exist.
This means some concurrent session has observed a problem and deleted that file.
Assuming that this is the reason for my exit status > 0.
ENDE 1550524323

More results from queries before failure can be found in /home/mleich/Server/10.4/bld_debug/mysql-test/var/log/bs_2.log

 - saving '/home/mleich/Server/10.4/bld_debug/mysql-test/var/log/main.bs_2-innodb/' to '/home/mleich/Server/10.4/bld_debug/mysql-test/var/log/main.bs_2-innodb/'
--------------------------------------------------------------------------
The servers were restarted 0 times
Spent 0.000 of 19 seconds executing testcases

Failure: Failed 1/1 tests, 0.00% were successful.

Failing test(s): main.bs_2

The log files in var/log may give you some hint of what went wrong.

If you want to report this error, please read first the documentation
at http://dev.mysql.com/doc/mysql/en/mysql-test-suite.html