running the testsuite on community-mysql-server-5.7.17-1.fc25.x86_64 fails with:

rpl.rpl_semi_sync_future_logpos 'row'    [ fail ]
        Test ended at 2017-01-30 16:34:44

CURRENT_TEST: rpl.rpl_semi_sync_future_logpos
mysqltest: In included file ./include/assert.inc at line 72:
included from /usr/share/mysql-test/suite/rpl/t/rpl_semi_sync_future_logpos.test at line 55:
At line 71: Test assertion failed in assert.inc

The result from queries just before the failure was:
< snip >
**** slave_relay_info on server_1 ****
SELECT * FROM mysql.slave_relay_log_info;
Number_of_lines	Relay_log_name	Relay_log_pos	Master_log_name	Master_log_pos	Sql_delay	Number_of_workers	Id	Channel_name

**** slave_master_info on server_1 ****
SELECT * FROM mysql.slave_master_info;
Number_of_lines	Master_log_name	Master_log_pos	Host	User_name	User_password	Port	Connect_retry	Enabled_ssl	Ssl_ca	Ssl_capath	Ssl_cert	Ssl_cipher	Ssl_key	Ssl_verify_server_cert	Heartbeat	Bind	Ignored_server_ids	Uuid	Retry_count	Ssl_crl	Ssl_crlpath	Enabled_auto_position	Channel_name	Tls_version

**** mysql.gtid_executed on server_1 ****
SELECT * FROM mysql.gtid_executed;
source_uuid	interval_start	interval_end
rpl_topology= 1->2
rand_seed: '' _rand_state: ''
extra debug info if any: ''
rpl_topology=1->2
connection master;
Assertion text: 'semi sync master clients should be 0.'
Assertion condition: '[show status like "Rpl_semi_sync_master_clients", Value, 1] = 0'
Assertion condition, interpolated: '1 = 0'
Assertion result: '0'
safe_process[18266]: Child process: 18267, exit: 1

 - the logfile can be found in '/var/tmp/testELX/log/rpl.rpl_semi_sync_future_logpos-row/rpl_semi_sync_future_logpos.log'