For the time these test are failing in 10.3 (with --repeat)
rpl.rpl_skip_error rpl.rpl_000011 rpl.rpl_binlog_errors rpl.rpl_row_find_row_debug rpl.rpl_mdev382 rpl.rpl_parallel2 rpl.rpl_ip_mix rpl.rpl_ip_mix2 rpl.rpl_rotate_logs rpl.circular_serverid0

And these are failing in buildbot after this commit
442a6e6b257e335f70730b0e18394c2f638f2962
rpl_parallel2, rpl_semi_sync_after_sync

How to reproduce
./mtr rpl.rpl_skip_error --repeat 2 (for each test) , Although these test fail are hard to reproduce rpl_parallel2, rpl_semi_sync_after_sync