CURRENT_TEST: innodb_fts.crash_recovery
mysqltest: At line 286: query 'DROP TABLE mdev19073, mdev19073_2' failed: <Unknown> (2013): Lost connection to server during query

The result from queries just before the failure was:
< snip >
disconnect dml2;
INSERT INTO articles VALUES         (8, 12, 'MySQL Tutorial','DBMS stands for DataBase ...');
SELECT * FROM articles WHERE MATCH (title, body)
AGAINST ('Tutorial' IN NATURAL LANGUAGE MODE);
id	FTS_DOC_ID	title	body
3	2	Optimizing MySQL	In this tutorial we will show ...
1	10	MySQL Tutorial	DBMS stands for DataBase ...
8	12	MySQL Tutorial	DBMS stands for DataBase ...
DROP TABLE articles;
SELECT * FROM mdev19073 WHERE MATCH (title, body)
AGAINST ('Database' IN NATURAL LANGUAGE MODE);
id	title	body
1	MySQL Tutorial	DBMS stands for Database...
2	MariaDB Tutorial	DB means Database ...
SELECT * FROM mdev19073_2 WHERE MATCH (title, body)
AGAINST ('Database' IN NATURAL LANGUAGE MODE);
id	title	body
1	MySQL Tutorial	DBMS stands for Database...
2	MariaDB Tutorial	DB means Database ...
DROP TABLE mdev19073, mdev19073_2;

More results from queries before failure can be found in /dev/shm/var/3/log/crash_recovery.log
