Installing QRT plugins causes server crash

mysql> INSTALL PLUGIN QUERY_RESPONSE_TIME_AUDIT SONAME 'query_response_time.so';
Query OK, 0 rows affected (0.01 sec)

mysql> INSTALL PLUGIN QUERY_RESPONSE_TIME SONAME 'query_response_time.so';
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111)
ERROR:
Can't connect to the server

Server version: 5.7.21-21 Percona Server (GPL), Release '21', Revision '24448dc'

Version: '5.7.21-21'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  Percona Server (GPL), Release '21', Revision '24448dc'
17:12:33 UTC - mysqld got signal 11 ;
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.
Please help us make Percona Server better by reporting any
bugs at http://bugs.percona.com/

key_buffer_size=8388608
read_buffer_size=131072
max_used_connections=1
max_threads=152
thread_count=1
connection_count=1
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 68324 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f6f76986000
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 = 7f6f8b77fe00 thread_stack 0x40000
/usr/sbin/mysqld(my_print_stacktrace+0x2c)[0xec6e0c]
/usr/sbin/mysqld(handle_fatal_signal+0x461)[0x79bdc1]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10330)[0x7f6f89cf0330]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7f6f76999030): INSTALL PLUGIN QUERY_RESPONSE_TIME_AUDIT SONAME 'query_response_time.so'
Connection ID (thread ID): 11
Status: NOT_KILLED