Create and drop index causes a crash in prepare

num_tables=10
table_size=1000

sysbench /usr/share/sysbench/oltp_insert.lua --tables=${num_tables} --table-size=${table_size} --mysql-db=test --mysql-user=root --threads=100 --db-driver=mysql --mysql-socket=${mysqldir}/socket.sock prepare

${mysqldir}/bin/mysql -uroot -S${mysqldir}/socket.sock -e "CREATE INDEX kc on test.sbtest1 (k,c);" >/dev/null 2>&1
${mysqldir}/bin/mysql -uroot -S${mysqldir}/socket.sock -e "DROP INDEX kc on test.sbtest1;" >/dev/null 2>&1

${xtrabackup_dir}/xtrabackup --user=root --password='' --backup --target-dir=${backup_dir}/full -S ${mysqldir}/socket.sock --datadir=${datadir} --lock-ddl

sysbench /usr/share/sysbench/oltp_insert.lua --tables=${num_tables} --mysql-db=test --mysql-user=root --threads=50 --db-driver=mysql --mysql-socket=${mysqldir}/socket.sock --time=20 run >/dev/null 2>&1 &

${xtrabackup_dir}/xtrabackup --user=root --password='' --backup --target-dir=${backup_dir}/inc --incremental-basedir=${backup_dir}/full -S ${mysqldir}/socket.sock --datadir=${datadir} --lock-ddl

${xtrabackup_dir}/xtrabackup --user=root --password='' --prepare --apply-log-only --target_dir=${backup_dir}/full

${xtrabackup_dir}/xtrabackup --user=root --password='' --prepare --target_dir=${backup_dir}/full --incremental-dir=${backup_dir}/inc

[FATAL] is_short 0, info_and_status_bits 0, offset 1230, o_offset 6, mismatch index 18446744073709551500, end_seg_len 130 parsed len 4
InnoDB: Assertion failure: ut0ut.cc:631
InnoDB: thread 139937165387520InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to https://jira.percona.com/projects/PXB.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: http://dev.mysql.com/doc/refman/8.0/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
13:19:28 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
Attempting to collect some information that could help diagnose the problem.
As this is a crash and something is definitely wrong, the information
collection process might fail.
key_buffer_size=0
read_buffer_size=131072
max_used_connections=0
max_threads=0
thread_count=0
connection_count=0
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 0 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 0 thread_stack 0x46000
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(my_print_stacktrace(unsigned char*, unsigned long)+0x43) [0x4519e6f]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(handle_fatal_signal+0x3f5) [0x3143bc6]
/usr/lib64/libpthread.so.0(+0xf5d0) [0x7f45ae0675d0]
/usr/lib64/libc.so.6(gsignal+0x37) [0x7f45abce2207]
/usr/lib64/libc.so.6(abort+0x148) [0x7f45abce38f8]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup() [0x36bd193]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(ib::fatal::~fatal()+0) [0x36c04c4]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(page_cur_parse_insert_rec(unsigned long, unsigned char const*, unsigned char const*, buf_block_t*, dict_index_t*, mtr_t*)+0x705) [0x3562c1d]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup() [0x3523a68]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(recv_recover_page_func(bool, buf_block_t*)+0x63e) [0x35254e0]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(buf_page_io_complete(buf_page_t*, bool)+0x63b) [0x32caea7]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(fil_aio_wait(unsigned long)+0x1ae) [0x3390b03]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup() [0x36457f0]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(void std::_Bind<void (*(unsigned long))(unsigned long)>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>)+0x46) [0x2afa3ba]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(void std::_Bind<void (*(unsigned long))(unsigned long)>::operator()<, void>()+0x28) [0x2afa0a4]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(void Runnable::operator()<void (*)(unsigned long), unsigned long>(void (*&&)(unsigned long), unsigned long&&)+0x5d) [0x2af9de7]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(void std::_Bind_simple<Runnable (void (*)(unsigned long), unsigned long)>::_M_invoke<0ul, 1ul>(std::_Index_tuple<0ul, 1ul>)+0x5f) [0x2af9bf1]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(std::_Bind_simple<Runnable (void (*)(unsigned long), unsigned long)>::operator()()+0x1b) [0x2af97d5]
/home/mchawla/pxb_8_0_debug_build_GA/bin/xtrabackup(std::thread::_Impl<std::_Bind_simple<Runnable (void (*)(unsigned long), unsigned long)> >::_M_run()+0x1c) [0x2af9424]
/usr/lib64/libstdc++.so.6(+0xb5070) [0x7f45ac646070]
/usr/lib64/libpthread.so.0(+0x7dd5) [0x7f45ae05fdd5]
/usr/lib64/libc.so.6(clone+0x6d) [0x7f45abda9ead]
Please report a bug at https://jira.percona.com/projects/PXB