Fix the microbenchmarks build#1662

Merged

adamsitnik merged 2 commits intodotnet:masterfrom

adamsitnik:lockBuildFix

Feb 12, 2021

Commits on Feb 12, 2021

apply [UnsupportedOSPlatform("macos")] attribute to the method that was recently marked as unsupported on macOS, fix net6.0 build
adamsitnik
committed
don't use ValueTask.CompletedTask as it was added in net5.0 and was causing netcoreapp2.1 and netcoreapp3.1 builds to fail
adamsitnik
committed