This is a new failure - these two arguments were swapped, so swapping them back.

Author: crummel

repos/coreclr.proj

@@ -7,8 +7,8 @@
     <OverridePortableBuild Condition="'$(TargetOS)' == 'OSX'">true</OverridePortableBuild>
 
     <BuildArguments>$(Platform) $(Configuration) skiptests</BuildArguments>
-    <BuildArguments>$(BuildArguments) -PortableBuild=$(OverridePortableBuild)</BuildArguments>
     <BuildArguments Condition="'$(SkipDisablePgo)' != 'true'">$(BuildArguments) -nopgooptimize</BuildArguments>
+    <BuildArguments>$(BuildArguments) -PortableBuild=$(OverridePortableBuild)</BuildArguments>
     <BuildArguments Condition="'$(OS)' != 'Windows_NT'">$(BuildArguments) msbuildonunsupportedplatform</BuildArguments>
     <BuildArguments Condition="'$(UseSystemLibraries)' == 'true'">$(BuildArguments) cmakeargs -DCLR_CMAKE_USE_SYSTEM_LIBUNWIND=TRUE</BuildArguments>
     <BuildArguments Condition="$(Platform.Contains('arm'))">$(BuildArguments) skipnuget cross -skiprestore cmakeargs -DFEATURE_GDBJIT=TRUE</BuildArguments>