[Draft] Server crashes in TABLE::mark_columns_used_by_index_no_reset

#3  <signal handler called>

#4  0x000055575b3aae3c in TABLE::mark_columns_used_by_index_no_reset (this=0x7f9094059170, index=42, bitmap=0x7f90b00a56e0) at /home/travis/src/sql/table.cc:6331

#5  0x000055575b3aacda in TABLE::mark_columns_used_by_index (this=0x7f9094059170, index=42, bitmap=0x7f90b00a56e0) at /home/travis/src/sql/table.cc:6297

#6  0x000055575b3877e9 in prepare_record_for_error_message (error=121, table=0x7f9094059170) at /home/travis/src/sql/sql_update.cc:239

#7  0x000055575b389e27 in mysql_update (thd=0x7f9090001f20, table_list=0x7f9090015000, fields=..., values=..., conds=0x7f9090015a78, order_num=0, order=0x0, limit=18446744073709551615, handle_duplicates=DUP_ERROR, ignore=false, found_return=0x7f90b00a66c0, updated_return=0x7f90b00a6770) at /home/travis/src/sql/sql_update.cc:977

#8  0x000055575b293971 in mysql_execute_command (thd=0x7f9090001f20) at /home/travis/src/sql/sql_parse.cc:4573

#9  0x000055575b29e82a in mysql_parse (thd=0x7f9090001f20, rawbuf=0x7f9090014e38 "UPDATE `table1_rocksdb` SET `col_bit_key` = 3 WHERE `col_set_latin1_not_null_key` = 0  /* QNO 5910 CON_ID 18 */", length=111, parser_state=0x7f90b00a75e0, is_com_multi=false, is_next_command=false) at /home/travis/src/sql/sql_parse.cc:8009

#10 0x000055575b28bf23 in dispatch_command (command=COM_QUERY, thd=0x7f9090001f20, packet=0x7f909000c671 " UPDATE `table1_rocksdb` SET `col_bit_key` = 3 WHERE `col_set_latin1_not_null_key` = 0  /* QNO 5910 CON_ID 18 */ ", packet_length=113, is_com_multi=false, is_next_command=false) at /home/travis/src/sql/sql_parse.cc:1838

#11 0x000055575b28a96f in do_command (thd=0x7f9090001f20) at /home/travis/src/sql/sql_parse.cc:1383

#12 0x000055575b3efbef in do_handle_one_connection (connect=0x55575e839e30) at /home/travis/src/sql/sql_connect.cc:1402

#13 0x000055575b3ef97c in handle_one_connection (arg=0x55575e839e30) at /home/travis/src/sql/sql_connect.cc:1308

#14 0x00007f90c06a6184 in start_thread (arg=0x7f90b00a8700) at pthread_create.c:312

#15 0x00007f90bfbb303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

perl /home/travis/rqg/runall-new.pl --duration=350 --threads=6 --seed=1520214726 --reporters=Backtrace,ErrorLog,Deadlock --validators=TransformerNoComparator --transformers=ExecuteAsCTE,ExecuteAsDeleteReturning,ExecuteAsExcept,ExecuteAsExecuteImmediate,ExecuteAsInsertSelect,ExecuteAsIntersect,ExecuteAsUnion,ExecuteAsUpdateDelete,ExecuteAsView,ExecuteAsPreparedTwice,ExecuteAsSPTwice --redefine=conf/mariadb/general-workarounds.yy --mysqld=--log_output=FILE --views --vcols --redefine=conf/mariadb/versioning.yy --redefine=conf/mariadb/alter_table.yy --redefine=conf/mariadb/bulk_insert.yy --redefine=conf/mariadb/sequences.yy --redefine=conf/mariadb/xa.yy --basedir=/home/travis/server --mysqld=--log_bin_trust_function_creators=1 --mysqld=--log-bin --mysqld=--max-statement-time=30 --mysqld=--loose-debug_assert_on_not_freed_memory=0 --grammar=conf/replication/replication.yy --gendata=conf/replication/replication-5.1.zz --mysqld=--plugin-load-add=ha_rocksdb --mysqld=--binlog-format=ROW --mysqld=--default-storage-engine=RocksDB --engine=RocksDB --vardir=/home/travis/logs/vardir1_4