[std:c++latest] 15 tests hang when running AutowiringTest.exe on MSVC

[QuellaZhang]

After building autowiring with /std;c++latest, 15 tests hang when running AutowiringTest.exe on MSVC. Could someone help look?

1. git clone https://github.com/leapmotion/autowiring autowiring
2. pushd autowiring
3. mkdir build_amd64_Release && cd build_amd64_Release
4. cmake -G "Visual Studio 16 2019" -A x64 -DCMAKE_SYSTEM_VERSION=10.0.18362.0 -DCMAKE_BUILD_TYPE=Release .. 2>&1
5. set CL=-std:c++latest
6. msbuild /m /p:Platform=x64 /p:Configuration=Release Autowiring.sln /t:Rebuild > build.log
7. .\bin\Release\AutowiringTest.exe

error:
F:\gitP\leapmotion\autowiring\build_amd64_Release>.\bin\Release\AutowiringTest.exe
[==========] Running 470 tests from 67 test cases.
[----------] Global test environment set-up.
[----------] 16 tests from AnySharedPointerTest
[ RUN ] AnySharedPointerTest.CanReinterpretCastSharedPtr
[ OK ] AnySharedPointerTest.CanReinterpretCastSharedPtr (0 ms)
[ RUN ] AnySharedPointerTest.OperatorEq
[ OK ] AnySharedPointerTest.OperatorEq (0 ms)
[ RUN ] AnySharedPointerTest.AnySharedPointerRelease
[ OK ] AnySharedPointerTest.AnySharedPointerRelease (0 ms)
[ RUN ] AnySharedPointerTest.SlotReassignment
[ OK ] AnySharedPointerTest.SlotReassignment (0 ms)
[ RUN ] AnySharedPointerTest.SlotsInVector
[ OK ] AnySharedPointerTest.SlotsInVector (0 ms)
[ RUN ] AnySharedPointerTest.SlotDuplication (hang)