Equivalent query in gitlab shows all machine names when machine tags are added in CI bug log filter.
Here is an example drm/intel#1148 (comment 414356)
Description: ELK ILK SNB IVB BYT HSW: igt@gem_ctx_exec@basic-nohangcheck - fail - Failed assertion: err == 0, Hostile unpreemptable context was not cancelled immediately upon closure
Equivalent query: runconfig_tag IS IN ["DRM-TIP"] AND (machine_name IS IN ["shard-snb7", "shard-snb3", "shard-snb2", "shard-hsw6", "fi-snb-2520m", "shard-hsw3", "shard-snb5", "shard-hsw7", "shard-hsw5", "fi-byt-n2820", "fi-snb-2600", "fi-hsw-4770r", "fi-byt-j1900", "shard-hsw8", "shard-hsw4", "fi-ilk-650", "fi-hsw-4770", "fi-ivb-3770", "fi-elk-e7500", "shard-hsw1", "shard-snb4", "fi-ilk-m540", "shard-snb6", "shard-hsw2", "shard-snb1", "shard-hsw", "shard-snb", "fi-hsw-4200u", "fi-hsw-peppy", "fi-byt-squawks", "fi-byt-clapper"] OR machine_tag IS IN ["ELK", "ILK", "SNB", "IVB", "BYT", "HSW", "ELKSNBm"]) AND ((testsuite_name = "IGT" AND test_name IS IN ["igt@gem_ctx_exec@basic-nohangcheck"])) AND ((testsuite_name = "IGT" AND status_name IS IN ["fail"])) AND stderr ~= 'Failed assertion: err == 0\n.*\n.*Hostile unpreemptable context was not cancelled immediately upon closure'