Assertion `0' failed in Protocol::end_statement() on UNION ALL

CREATE TABLE t1 (f1 INT);

CREATE TABLE t2 (f2 INT);

INSERT INTO t1 VALUES (1),(2);

( SELECT 1 FROM t1 WHERE f1 NOT IN ( SELECT f2 FROM t2 ) LIMIT 0 )

UNION ALL

( SELECT 1 FROM t1 WHERE f1 NOT IN ( SELECT f2 FROM t2 ) )

;

mysqld: /src/10.1/sql/protocol.cc:523: void Protocol::end_statement(): Assertion `0' failed.

160129 13:37:25 [ERROR] mysqld got signal 6 ;

#6  0x00007fb70bebe126 in __assert_fail_base () from /lib64/libc.so.6

#7  0x00007fb70bebe1d2 in __assert_fail () from /lib64/libc.so.6

#8  0x0000559da958109e in Protocol::end_statement (this=0x7fb707dc9ec0) at /src/10.1/sql/protocol.cc:523

#9  0x0000559da9635a35 in dispatch_command (command=COM_QUERY, thd=0x7fb707dc9930, packet=0x7fb706fc92b1 "", packet_length=136) at /src/10.1/sql/sql_parse.cc:1941

#10 0x0000559da96331a6 in do_command (thd=0x7fb707dc9930) at /src/10.1/sql/sql_parse.cc:1109

#11 0x0000559da9768798 in do_handle_one_connection (thd_arg=0x7fb707dc9930) at /src/10.1/sql/sql_connect.cc:1349

#12 0x0000559da97684fc in handle_one_connection (arg=0x7fb707dc9930) at /src/10.1/sql/sql_connect.cc:1261

#13 0x0000559da9e6ebf2 in pfs_spawn_thread (arg=0x7fb7069b0e70) at /src/10.1/storage/perfschema/pfs.cc:1860

#14 0x00007fb70de070a4 in start_thread () from /lib64/libpthread.so.0

#15 0x00007fb70bf7504d in clone () from /lib64/libc.so.6