Sig 6 Assertion failure: ut0stage.h:463:m_progress != nullptr

While running concurrent runs on 8.0, found this crash

2019-09-14T21:02:17.021138Z 11 [ERROR] [MY-011825] [InnoDB] Cannot drop undo tablespace 'undo_003' because it is active. Please do: ALTER UNDO TABLESPACE undo_003 SET INACTIVE;
2019-09-14T21:02:30.692187Z 17 [ERROR] [MY-011825] [InnoDB] Cannot drop undo tablespace 'undo_001' because it is active. Please do: ALTER UNDO TABLESPACE undo_001 SET INACTIVE;
2019-09-14T21:03:12.587058Z 16 [ERROR] [MY-013183] [InnoDB] Assertion failure: ut0stage.h:463:m_progress != nullptr thread 140467242964736
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
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.
21:03:12 UTC - mysqld got signal 6 ;
Most likely, you have hit a bug, but this error can also be caused by malfunctioning hardware.
Thread pointer: 0x7fc050000d00
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 = 7fc1141e8d18 thread_stack 0x46000
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(my_print_stacktrace(unsigned char*, unsigned long)+0x55) [0x480b20c]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(handle_fatal_signal+0x2c6) [0x363b02d]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390) [0x7fc1496f4390]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38) [0x7fc1479cc428]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a) [0x7fc1479ce02a]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(ut_dbg_assertion_failed(char const*, char const*, unsigned long)+0x1aa) [0x4db8923]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(ut_stage_alter_ts::set_estimate(unsigned long)+0x3d) [0x4fc7c71]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld() [0x4fc4d95]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(fsp_alter_encrypt_tablespace(THD*, unsigned int, unsigned int, bool, bool, void*)+0x5ea) [0x4fc57f6]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld() [0x4a7b6b1]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld() [0x4a7bb13]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld() [0x4a7d9ba]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(Sql_cmd_alter_tablespace::execute(THD*)+0x4e6) [0x3537dca]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(mysql_execute_command(THD*, bool)+0x61fe) [0x344916a]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(mysql_parse(THD*, Parser_state*, bool)+0x6cd) [0x344bc3b]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(dispatch_command(THD*, COM_DATA const*, enum_server_command)+0x1571) [0x3440164]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld(do_command(THD*)+0x50b) [0x343e57d]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld() [0x362484b]
/home/mohit.joshi/PS130919-percona-server-8.0.16-7-linux-x86_64-debug/bin/mysqld() [0x49050b8]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba) [0x7fc1496ea6ba]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fc147a9e41d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7fc050214008): ALTER TABLESPACE tab04k ENCRYPTION 'Y'
Connection ID (thread ID): 16
Status: NOT_KILLED

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