Jenkins uses classname for test grouping, so you can see for example all test results in binlog or main. but test name contains the same classname, which leads to duplicated classname in resulting full testname like sys_vars.sys_vars.sysvars_server_notembedded - note doubled sys_vars.

current report:

<testcase assertions="" classname="binlog" name="binlog.binlog_checksum" status="MTR_RES_PASSED" time="0.034" />

should be:

<testcase assertions="" classname="binlog" name="binlog_checksum" status="MTR_RES_PASSED" time="0.034" />