InnoDB: Failing assertion: !space->referenced()

2018-05-13 17:43:28 0x7f08c07ce700  InnoDB: Assertion failure in file /home/travis/src/storage/innobase/fil/fil0fil.cc line 2741

InnoDB: Failing assertion: !space->referenced()

Query (0x7f088001fba8): DROP TABLE IF EXISTS trigger124861,  transforms.trigger224861 /* QNO 7660 CON_ID 18 */

Connection ID (thread ID): 18

Status: NOT_KILLED

#5  0x00007f08d6224028 in __GI_abort () at abort.c:89

#6  0x000055692ddc3ceb in ut_dbg_assertion_failed (expr=0x55692e4b3991 "!space->referenced()", file=0x55692e4b2700 "/home/travis/src/storage/innobase/fil/fil0fil.cc", line=2741) at /home/travis/src/storage/innobase/ut/ut0dbg.cc:61

#7  0x000055692debf743 in fil_delete_tablespace (id=3554, drop_ahi=false) at /home/travis/src/storage/innobase/fil/fil0fil.cc:2741

#8  0x000055692dcf53d5 in row_drop_table_for_mysql (name=0x7f08c07ca560 "test/trigger124861", trx=0x7f08c0b57578, drop_db=false, create_failed=0, nonatomic=true) at /home/travis/src/storage/innobase/row/row0mysql.cc:3864

#9  0x000055692dba5f4e in ha_innobase::delete_table (this=0x7f0880020e70, name=0x7f08c07cc140 "./test/trigger124861") at /home/travis/src/storage/innobase/handler/ha_innodb.cc:12992

#10 0x000055692d98e716 in handler::ha_delete_table (this=0x7f0880020e70, name=0x7f08c07cc140 "./test/trigger124861") at /home/travis/src/sql/handler.cc:4520

#11 0x000055692d988779 in ha_delete_table (thd=0x7f088000b2f0, table_type=0x556931157650, path=0x7f08c07cc140 "./test/trigger124861", db=0x7f08c07cbdd0, alias=0x7f088001fd38, generate_warning=true) at /home/travis/src/sql/handler.cc:2528

#12 0x000055692d75b8da in mysql_rm_table_no_locks (thd=0x7f088000b2f0, tables=0x7f088001fd10, if_exists=true, drop_temporary=false, drop_view=false, drop_sequence=false, dont_log_query=false, dont_free_locks=false) at /home/travis/src/sql/sql_table.cc:2514

#13 0x000055692d75a8ee in mysql_rm_table (thd=0x7f088000b2f0, tables=0x7f088001fd10, if_exists=true, drop_temporary=false, drop_sequence=false) at /home/travis/src/sql/sql_table.cc:2128

#14 0x000055692d696449 in mysql_execute_command (thd=0x7f088000b2f0) at /home/travis/src/sql/sql_parse.cc:5051

#15 0x000055692d69f958 in mysql_parse (thd=0x7f088000b2f0, rawbuf=0x7f088001fba8 "DROP TABLE IF EXISTS trigger124861,  transforms.trigger224861 /* QNO 7660 CON_ID 18 */", length=86, parser_state=0x7f08c07cd5f0, is_com_multi=false, is_next_command=false) at /home/travis/src/sql/sql_parse.cc:8019

#16 0x000055692d68cddc in dispatch_command (command=COM_QUERY, thd=0x7f088000b2f0, packet=0x7f08800177a1 "DROP TABLE IF EXISTS trigger124861,  transforms.trigger224861 /* QNO 7660 CON_ID 18 */ ", packet_length=87, is_com_multi=false, is_next_command=false) at /home/travis/src/sql/sql_parse.cc:1846

#17 0x000055692d68b80d in do_command (thd=0x7f088000b2f0) at /home/travis/src/sql/sql_parse.cc:1391

#18 0x000055692d7f1609 in do_handle_one_connection (connect=0x556931d31280) at /home/travis/src/sql/sql_connect.cc:1402

#19 0x000055692d7f138d in handle_one_connection (arg=0x556931d31280) at /home/travis/src/sql/sql_connect.cc:1308

#20 0x00007f08d6ddb184 in start_thread (arg=0x7f08c07ce700) at pthread_create.c:312

#21 0x00007f08d62e803d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

perl /home/travis/rqg/runall-new.pl --duration=350 --threads=6 --seed=1526233097 --reporters=Backtrace,ErrorLog,Deadlock --validators=TransformerNoComparator --transformers=ConvertSubqueriesToViews,ConvertTablesToDerived,Count,DisableOptimizations,Distinct,EnableOptimizations,ExecuteAsCTE,ExecuteAsDeleteReturning,ExecuteAsDerived,ExecuteAsExcept,ExecuteAsExecuteImmediate,ExecuteAsInsertSelect,ExecuteAsIntersect,ExecuteAsSelectItem,ExecuteAsUnion,ExecuteAsUpdateDelete,ExecuteAsView,ExecuteAsWhereSubquery,Having,InlineSubqueries,LimitRowsExamined,OrderBy,StraightJoin,ExecuteAsPreparedTwice,ExecuteAsTrigger,ExecuteAsSPTwice,ExecuteAsFunctionTwice --redefine=conf/mariadb/general-workarounds.yy --mysqld=--log_output=FILE --mysqld=--log_bin_trust_function_creators=1 --mysqld=--log-bin --mysqld=--max-statement-time=30 --mysqld=--loose-debug_assert_on_not_freed_memory=0 --views --redefine=conf/mariadb/versioning.yy --basedir=/home/travis/server --grammar=conf/runtime/information_schema.yy --engine=InnoDB --vardir=/home/travis/logs/vardir1_2