Local Build fails when Build encounters an RSP (response) file

[Nirmal4G]

Details about the Problem

Repository: NuGet.Client

When building locally, the common.ps1 script will fail when it encounters a response file like Directory.Buil.rsp within or above the repo folder. The reason is that the script gets the .NET SDK version through MSBuild text output but when the response file is detected, MSBuild spews out a header text for the response file and that messes up with the logic for getting the .NET SDK version.

Detailed repro steps

1. Go to your local NuGet.Client repo

2. Clean your local repo with git clean -Xdf

3. Add a Directory.Buil.rsp file within or above the repo folder

4. Run configure.ps1 and see that'll fail.

Other suggested things

Verbose Logs

PS E:\Projects\Microsoft.NET\nuget-client> .\configure.ps1
[16:20:08 +0]   Configuring NuGet.Client build environment
[16:20:08 +0]   [BEGIN] Configuring git repo
[16:20:08 +0]   [DONE +00:00:00] Configuring git repo
[16:20:08 +0]   [BEGIN] Installing .NET CLI
[16:20:09 +1]   Downloading .NET CLI
[16:20:09 +0]   The version of SDK should be installed is : command
[16:20:09 +0]   Probing folder : E:\Projects\Microsoft.NET\nuget-client\cli\sdk\command
dotnet-install: Downloading link: https://dotnetcli.azureedge.net/dotnet/Sdk/command/dotnet-sdk-command-win-x64.zip
dotnet-install: Cannot download: https://dotnetcli.azureedge.net/dotnet/Sdk/command/dotnet-sdk-command-win-x64.zip
dotnet-install: Downloading legacy link: https://dotnetcli.azureedge.net/dotnet/Sdk/command/dotnet-dev-win-x64.command.zip
dotnet-install: Cannot download: https://dotnetcli.azureedge.net/dotnet/Sdk/command/dotnet-dev-win-x64.command.zip
Error-Log : [16:20:16 +7]       [FAILED +00:00:08] Installing .NET CLI
At E:\Projects\Microsoft.NET\nuget-client\build\common.ps1:122 char:17
+ ...             Error-Log "[FAILED +$(Format-ElapsedTime $sw.Elapsed)] $B ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Error-Log

Could not find/download: ".NET Core SDK" with version = command
Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support
At E:\Projects\Microsoft.NET\nuget-client\cli\dotnet-install.ps1:660 char:5
+     throw "Could not find/download: `"$assetName`" with version = $Sp ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OperationStopped: (Could not find/...ET Core support:String) [], RuntimeException
    + FullyQualifiedErrorId : Could not find/download: ".NET Core SDK" with version = command
Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support