Change warning to error for test asset framework issues. (dotnet/coreclr#6535)

Commit migrated from https://github.com/dotnet/coreclr/commit/0f89bd29d3f77a1a6f5a4764d0747270fc89e4a5

diff --git a/src/coreclr/tests/publishdependency.targets b/src/coreclr/tests/publishdependency.targets
index c5a006c..997a523 100644 (file)
--- a/src/coreclr/tests/publishdependency.targets
+++ b/src/coreclr/tests/publishdependency.targets
@@ -23,7 +23,7 @@
 
     <!-- This will use the overridden PrereleaseResolveNuGetPackageAssets, which outputs copy local items
          for the xunit wrapper projects -->
-    <PrereleaseResolveNuGetPackageAssets AllowFallbackOnTargetSelection="true"
+    <PrereleaseResolveNuGetPackageAssets AllowFallbackOnTargetSelection="false"
                                          IncludeFrameworkReferences="false"
                                          NuGetPackagesDirectory="$(PackagesDir)"
                                          RuntimeIdentifier="$(TestNugetRuntimeId)"