Another attempt to work around Linux locale issue

azure-pipelines.yml

@@ -139,7 +139,6 @@ phases:
     - script: eng/common/cibuild.sh
         --configuration $(_BuildConfig)
         --prepareMachine
-      env: { LC_ALL: en_US.UTF-8 } # workaround an issue with bash + MSBuild
       name: Build
       displayName: Build
       condition: succeeded()

eng/Tools.props

@@ -15,8 +15,21 @@
 
     <Error Condition="!Exists('$(DotNetInstallScript)')" Text="Could not find dotnet-install at $(DotNetInstallScript)" />
 
-    <Exec Command="powershell -ExecutionPolicy ByPass -NoProfile -File &quot;$(DotNetInstallScript)&quot; $(DotNetInstallArgs) -Version %(DotNetRuntime.Identity)" ConsoleToMsBuild="true" Condition="'$(OS)' == 'Windows_NT'" />
-    <Exec Command="&quot;$(DotNetInstallScript)&quot; $(DotNetInstallArgs) --version %(DotNetRuntime.Identity)" ConsoleToMsBuild="true" Condition="'$(OS)' != 'Windows_NT'" />
+    <!-- 
+      We're seeing issues on Linux in Azure Pipelines where MSBuild tries to set LC_ALL to utf8 when running a shell script.
+      We don't really care about this error and it's non-blocking, but MSBuild's default parsing still flags it as an error.
+      Setting IgnoreStandardErrorWarningFormat=true will work around that problem.
+    -->
+    <Exec 
+      Condition="'$(OS)' == 'Windows_NT'"
+      Command="powershell -ExecutionPolicy ByPass -NoProfile -File &quot;$(DotNetInstallScript)&quot; $(DotNetInstallArgs) -Version %(DotNetRuntime.Identity)" 
+      ConsoleToMsBuild="true" 
+      IgnoreStandardErrorWarningFormat="true" />
+    <Exec 
+      Condition="'$(OS)' != 'Windows_NT'"
+      Command="&quot;$(DotNetInstallScript)&quot; $(DotNetInstallArgs) --version %(DotNetRuntime.Identity)" 
+      ConsoleToMsBuild="true" 
+      IgnoreStandardErrorWarningFormat="true" />
   </Target>
 
 </Project>