Building slowdebug on Windows:

    jib > t:\workspace\open\src\hotspot\share\jfr/recorder/service/jfrEvent.hpp(87): error C2872: 'JfrTicks': ambiguous symbol
    jib > t:\workspace\open\src\hotspot\share\jfr/utilities/jfrTime.hpp(30): note: could be 'TimeInstant<CounterRepresentation,FastUnorderedElapsedCounterSource> JfrTicks'
    jib > t:/workspace/open/test/hotspot/gtest/jfr/test_networkUtilization.cpp(64): note: or ''anonymous-namespace'::JfrTicks'
    jib > t:\workspace\open\src\hotspot\share\jfr/recorder/service/jfrEvent.hpp(81): note: while compiling class template member function 'void JfrEvent<EventZStatisticsSampler>::commit(void)'
    jib > t:\workspace\build\windows-x64-slowdebug\hotspot\variant-server\gensrc\jfrfiles/jfrEventClasses.hpp(10064): note: see reference to function template instantiation 'void JfrEvent<EventZStatisticsSampler>::commit(void)' being compiled
    jib > t:\workspace\build\windows-x64-slowdebug\hotspot\variant-server\gensrc\jfrfiles/jfrEventClasses.hpp(10018): note: see reference to class template instantiation 'JfrEvent<EventZStatisticsSampler>' being compiled
    jib > t:\workspace\open\src\hotspot\share\jfr/recorder/service/jfrEvent.hpp(89): error C2872: 'JfrTicks': ambiguous symbol
    jib > t:\workspace\open\src\hotspot\share\jfr/utilities/jfrTime.hpp(30): note: could be 'TimeInstant<CounterRepresentation,FastUnorderedElapsedCounterSource> JfrTicks'
    jib > t:/workspace/open/test/hotspot/gtest/jfr/test_networkUtilization.cpp(64): note: or '`anonymous-namespace'::JfrTicks'
    jib > lib/CompileGtest.gmk:58: recipe for target '/cygdrive/t/workspace/build/windows-x64-slowdebug/hotspot/variant-server/libjvm/gtest/objs/test_networkUtilization.obj' failed