[MONITOR-SPEC-PR] .Net SDK Automation: Plugin csharpgen reported failure

[jianingwang123]

Description:
error : Plugin csharpgen reported failure. encountered in .Net automation. The detailed error message is as follows:

02:11:32.557 cmdout 	[.Net]   fatal   | System.ArgumentException: An item with the same key has already been added. Key: Password
02:11:32.557 cmdout 	[.Net]      at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
02:11:32.557 cmdout 	[.Net]      at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
02:11:32.558 cmdout 	[.Net]      at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](TSource[] source, Func2 keySelector, Func2 elementSelector, IEqualityComparer`1 comparer)
02:11:32.558 cmdout 	[.Net]      at AutoRest.CSharp.AutoRest.Plugins.MgmtTarget.ExecuteAsync(GeneratedCodeWorkspace project) in D:\a\_work\1\s\autorest.csharp\src\AutoRest.CSharp\Mgmt\AutoRest\MgmtTarget.cs:line 91
02:11:32.559 cmdout 	[.Net]      at AutoRest.CSharp.AutoRest.Plugins.CSharpGen.ExecuteAsync(CodeModel codeModel) in D:\a\_work\1\s\autorest.csharp\src\AutoRest.CSharp\Common\AutoRest\Plugins\CSharpGen.cs:line 46
02:11:32.559 cmdout 	[.Net]      at AutoRest.CSharp.AutoRest.Plugins.CSharpGen.Execute(IPluginCommunication autoRest) in D:\a\_work\1\s\autorest.csharp\src\AutoRest.CSharp\Common\AutoRest\Plugins\CSharpGen.cs:line 130
02:11:32.559 cmdout 	[.Net]      at AutoRest.CSharp.AutoRest.Plugins.PluginProcessor.Start(IPluginCommunication autoRest) in D:\a\_work\1\s\autorest.csharp\src\AutoRest.CSharp\Common\AutoRest\Plugins\PluginProcessor.cs:line 39
02:11:32.559 cmdout 	[.Net]   fatal   | Process() cancelled due to failure 
02:11:32.559 cmdout 	[.Net] EXEC : error   | error : Plugin csharpgen reported failure. [/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Azure.ResourceManager.DataFactory.csproj]
02:11:32.560 cmdout 	[.Net]   error   | Autorest completed with an error. If you think the error message is unclear, or is a bug, please declare an issues at https://github.com/Azure/autorest/issues with the error message you are seeing.
02:11:32.612 cmdout 	[.Net]   npm notice
02:11:32.612 cmdout 	[.Net]   npm notice New major version of npm available! 10.8.2 -> 11.1.0
02:11:32.612 cmdout 	[.Net]   npm notice Changelog: https://github.com/npm/cli/releases/tag/v11.1.0
02:11:32.612 cmdout 	[.Net]   npm notice To update run: npm install -g [email protected]
02:11:32.612 cmdout 	[.Net]   npm notice
02:11:32.620 cmdout 	[.Net] /home/cloudtest/.nuget/packages/microsoft.azure.autorest.csharp/3.0.0-beta.20250218.1/buildMultiTargeting/Microsoft.Azure.AutoRest.CSharp.targets(58,5): error MSB3073: The command "npx autorest@ --max-memory-size=8192 --skip-csproj --skip-upgrade-check --version=3.9.7 /mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/autorest.md  --use=/home/cloudtest/.nuget/packages/microsoft.azure.autorest.csharp/3.0.0-beta.20250218.1/buildMultiTargeting/../tools/net8.0/any/ --clear-output-folder=true --shared-source-folders="/mnt/vss/_work/1/s/azure-sdk-for-net/eng//../sdk/core/Azure.Core/src/Shared/;/home/cloudtest/.nuget/packages/microsoft.azure.autorest.csharp/3.0.0-beta.20250218.1/buildMultiTargeting/../content/Generator.Shared/" --output-folder=/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Generated --namespace=Azure.ResourceManager.DataFactory" exited with code 1. [/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Azure.ResourceManager.DataFactory.csproj]
02:11:32.625 cmdout 	[.Net] Build FAILED.
02:11:32.626 cmdout 	[.Net] EXEC : warning : The schema 'ArrayItemschema' is shared by 'Hours' and 'Minutes' which is unexpected. [/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Azure.ResourceManager.DataFactory.csproj]
02:11:32.626 cmdout 	[.Net] EXEC : warning : The schema 'ArrayItemschema' is shared by 'MonthDays' and 'Minutes' which is unexpected. [/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Azure.ResourceManager.DataFactory.csproj]
02:11:32.626 cmdout 	[.Net] EXEC : error   | error : Plugin csharpgen reported failure. [/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Azure.ResourceManager.DataFactory.csproj]
02:11:32.626 cmdout 	[.Net] /home/cloudtest/.nuget/packages/microsoft.azure.autorest.csharp/3.0.0-beta.20250218.1/buildMultiTargeting/Microsoft.Azure.AutoRest.CSharp.targets(58,5): error MSB3073: The command "npx autorest@ --max-memory-size=8192 --skip-csproj --skip-upgrade-check --version=3.9.7 /mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/autorest.md  --use=/home/cloudtest/.nuget/packages/microsoft.azure.autorest.csharp/3.0.0-beta.20250218.1/buildMultiTargeting/../tools/net8.0/any/ --clear-output-folder=true --shared-source-folders="/mnt/vss/_work/1/s/azure-sdk-for-net/eng//../sdk/core/Azure.Core/src/Shared/;/home/cloudtest/.nuget/packages/microsoft.azure.autorest.csharp/3.0.0-beta.20250218.1/buildMultiTargeting/../content/Generator.Shared/" --output-folder=/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Generated --namespace=Azure.ResourceManager.DataFactory" exited with code 1. [/mnt/vss/_work/1/s/azure-sdk-for-net/sdk/datafactory/Azure.ResourceManager.DataFactory/src/Azure.ResourceManager.DataFactory.csproj]
02:11:32.626 cmdout 	[.Net]     2 Warning(s)
02:11:32.627 cmdout 	[.Net]     2 Error(s)
02:11:32.627 cmdout 	[.Net] Time Elapsed 00:00:42.97
02:11:32.668 cmdout E 	[.Net] [ERROR] Failed to generate sdk for package:Azure.ResourceManager.DataFactory. Exit code: False.
02:11:32.669 cmdout E 	[.Net] [ERROR] Please review the detail errors for potential fixes.
02:11:32.669 cmdout E 	[.Net] [ERROR] If the issue persists, contact the DotNet language support channel at https://aka.ms/azsdk/donet-teams-channel and include this spec pull request.
02:11:33.168 cmdout 	[.Net] specName: datafactory, serviceType: resource-manager
02:11:33.717 cmdout 	[.Net] Updating autorest.md files for all the changed swaggers.
02:11:34.174 error 	Script return with result [failed] code [0] signal [null] cwd [azure-sdk-for-net]: pwsh ./eng/scripts/Invoke-GenerateAndBuildV2.ps1
02:11:34.174 endsection 	Call generateScript

Additional context:
link1: https://dev.azure.com/azure-sdk/internal/_build/results?buildId=4578780&view=logs&j=2be18a23-047c-5c9f-61d7-60a33437d1f1&t=90227b5e-3523-5803-3e16-3788cf693a16&l=729
link2: https://dev.azure.com/azure-sdk/internal/_build/results?buildId=4587996&view=logs&j=2be18a23-047c-5c9f-61d7-60a33437d1f1&t=90227b5e-3523-5803-3e16-3788cf693a16&l=729

[jianingwang123]

@welovej , could you help troubleshoot?

[welovej]

Please refer to this screent shot for the cause of "An item with the same key has already been added. Key: Password" error.