diff --git a/global.json b/global.json
index 02dd315..ad2612a 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "10.0.100",
+    "version": "10.0.101",
     "allowPrerelease": true,
     "rollForward": "major"
   }
diff --git a/src/index/index.proj b/src/index/index.proj
index 82124c3..7d0ff4a 100644
--- a/src/index/index.proj
+++ b/src/index/index.proj
@@ -125,7 +125,16 @@
       <PrepareCommand>$([System.String]::Copy('%(ClonedRepository.PrepareCommand)').Trim())</PrepareCommand>
     </PropertyGroup>
     <Message Importance="High" Text="Preparing Repository %(ClonedRepository.Identity)"/>
-    <Exec Command="cmd /c &quot;$(PrepareCommand)&quot;" WorkingDirectory="%(ClonedRepository.LocalPath)" ContinueOnError="true" IgnoreStandardErrorWarningFormat="true" LogStandardErrorAsError="false" IgnoreExitCode="true"/>
+    <Exec Command="cmd /c &quot;$(PrepareCommand)&quot;"
+          WorkingDirectory="%(ClonedRepository.LocalPath)"
+          ContinueOnError="true"
+          IgnoreStandardErrorWarningFormat="true"
+          LogStandardErrorAsError="false"
+          IgnoreExitCode="true">
+      <Output TaskParameter="ExitCode" PropertyName="PrepareExitCode"/>
+    </Exec>
+    <Warning Condition="'$(PrepareExitCode)' != '0'"
+             Text="Preparing repository %(ClonedRepository.Identity) failed with exit code $(PrepareExitCode)."/>
   </Target>
 
   <Target Name="PrepareV2" DependsOnTargets="ResolveHashV2" Outputs="%(ClonedRepositoryV2.Identity)">