Known Build Error: error : Cannot create a file when that file already exists.

[wtgodbe]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=995186&view=logs&j=1b89928a-2219-5ef9-602f-f95beb3da4dc
Build error leg or test failing: Build / Build: Windows x64/x86/arm64 / Build x64
Pull request: #61011

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "error : Cannot create a file when that file already exists.",
  "ErrorPattern": "",
  "BuildRetry": true,
  "ExcludeConsoleLog": true
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=995186
Error message validated: [error : Cannot create a file when that file already exists.]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 3/27/2025 3:36:33 AM UTC

Report

Build	Repository	Step Name	Console log	Pull Request
1473705	dotnet/aspnetcore	Run build.cmd	Log	#66692
1472827	dotnet/aspnetcore	Run build.cmd	Log	#67265
1472121	dotnet/aspnetcore	Run build.cmd	Log	#67265
1469798	dotnet/aspnetcore	Run build.cmd	Log	#67288
1464650	dotnet/aspnetcore	Run build.cmd	Log	#67219
1460497	dotnet/aspnetcore	Run build.cmd	Log
1458521	dotnet/aspnetcore	Run build.cmd	Log	#67142

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	7

[lewing]

This appears to always fail in src\Grpc\JsonTranscoding\src\Microsoft.AspNetCore.Grpc.Swagger\Microsoft.AspNetCore.Grpc.Swagger.csproj

[wtgodbe]

More info at #32219

[ilonatommy]

Still fails occasionally with JsonTranscoding.
log

Initially, I though that it's because the current fix is applied only to RequiresDelayedBuild assemblies and JsonTranscoding is not a part of that set:

aspnetcore/src/BuildAfterTargetingPack/BuildAfterTargetingPack.csproj

Line 35 in 030a371

<RequiresDelayedBuild Remove="$(RepoRoot)src\Grpc\JsonTranscoding\**\*" Condition="'$(DotNetBuild)' == 'true'" />

but the command:

./eng/build.cmd -ci -prepareMachine -nobl -all -noBuildJava -pack -arch x64 /p:CrossgenOutput=false /p:ASPNETCORE_TEST_LOG_DIR=artifacts/log

does not contain any arguments that would set `DotNetBuild'. To be sure, it would be good to see the binlog but none was produced in the failed run.

[wtgodbe]

Still fails occasionally with JsonTranscoding.

This one was on 10.0 and before the backport of #65150. I haven't seen JsonTranscoding fail on main since that PR was merged there on Friday. https://dev.azure.com/dnceng-public/public/_build/results?buildId=1260996 from today is interesting, but isn't on one of the RequiresDelayedBuild projects

[wtgodbe]

does not contain any arguments that would set `DotNetBuild'. To be sure, it would be good to see the binlog but none was produced in the failed run.

As for this part, DotNetBuild is only true when we're building in the VMR. I added that code you linked a couple weeks ago, in order to work around this issue in the VMR. I'll probably revert it if we continue not to see failures in the JsonTranscoding projects, as it's a bit hacky (FYI @mmitche)