[wasm] Random blazor build failures in WBT - `error CS1001: Identifier expected`

[jkoritzinsky]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=280353
Build error leg or test failing: Wasm.Build.Tests.Blazor.MiscTests.NativeBuild_WithDeployOnBuild_UsedByVS
Pull request: #86519

Error Message

Fill the error message using known issues guidance.

{
  "BuildRetry": false,
  "ErrorPattern": "error CS1001: Identifier expected.*blz",
  "ExcludeConsoleLog": false
}

Report

Build	Definition	Test	Pull Request
361814	dotnet/runtime	Wasm.Build.Tests.Blazor.BuildPublishTests.DefaultTemplate_CheckFingerprinting
353108	dotnet/runtime	Workloads-NoWebcil-Wasm.Build.Tests.Blazor.MiscTests.WorkItemExecution	#89529
351270	dotnet/runtime	Workloads-Wasm.Build.Tests.Blazor.MiscTests.WorkItemExecution	#89432
351073	dotnet/runtime	Workloads-NoWebcil-Wasm.Build.Tests.Blazor.NoopNativeRebuildTest.WorkItemExecution	#88279
339582	dotnet/runtime	Workloads-Wasm.Build.Tests.Blazor.MiscTests.WorkItemExecution	#88906

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	1	5

Known issue validation

Build: 🔎
Result validation: ⚠️ Validation could not be done without an Azure DevOps build URL on the issue. Please add it to the "Build: 🔎" line.
Validation performed at: 7/25/2023 11:54:35 PM UTC

TODO:

• Add some debug bits to print the source file when such an error is encountered, since it is not reproducible easily.

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=280353
Build error leg or test failing: Wasm.Build.Tests.Blazor.MiscTests.NativeBuild_WithDeployOnBuild_UsedByVS
Pull request: #86519

Error Message

Fill the error message using known issues guidance.

{
  "ErrorMessage": "Wasm.Build.Tests.Blazor.MiscTests.NativeBuild_WithDeployOnBuild_UsedByVS(config: "Release", nativeRelink: False) [FAIL]",
  "BuildRetry": false,
  "ErrorPattern": "",
  "ExcludeConsoleLog": false
}

Author:	jkoritzinsky
Assignees:	-
Labels:	arch-wasm, blocking-clean-ci, Known Build Error
Milestone:	-

Tagging subscribers to this area: @directhex
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=280353
Build error leg or test failing: Wasm.Build.Tests.Blazor.MiscTests.NativeBuild_WithDeployOnBuild_UsedByVS
Pull request: #86519

Error Message

Fill the error message using known issues guidance.

{
  "ErrorMessage": "Wasm.Build.Tests.Blazor.MiscTests.NativeBuild_WithDeployOnBuild_UsedByVS(config: "Release", nativeRelink: False) [FAIL]",
  "BuildRetry": false,
  "ErrorPattern": "",
  "ExcludeConsoleLog": false
}

Report

Summary

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

Author:	jkoritzinsky
Assignees:	-
Labels:	arch-wasm, blocking-clean-ci, untriaged, area-Infrastructure-mono, Known Build Error, needs-area-label
Milestone:	-

[radical]

Blazor template tests sometimes fail with errors like:

 error CS1001: Identifier expected [/root/helix/work/workitem/e/wbt/blz_deploy_on_build_Release_False_szcqbvo4.for/blz_deploy_on_build_Release_False_szcqbvo4.for.csproj]
 error CS1002: ; expected [/root/helix/work/workitem/e/wbt/blz_deploy_on_build_Release_False_szcqbvo4.for/blz_deploy_on_build_Release_False_szcqbvo4.for.csproj]
 error CS1003: Syntax error, '(' expected [/root/helix/work/workitem/e/wbt/blz_deploy_on_build_Release_False_szcqbvo4.for/blz_deploy_on_build_Release_False_szcqbvo4.for.csproj]
 error CS1002: ; expected [/root/helix/work/workitem/e/wbt/blz_deploy_on_build_Release_False_szcqbvo4.for/blz_deploy_on_build_Release_False_szcqbvo4.for.csproj]
 error CS1026: ) expected [/root/helix/work/workitem/e/wbt/blz_deploy_on_build_Release_False_szcqbvo4.for/blz_deploy_on_build_Release_False_szcqbvo4.for.csproj]

But it's not clear what code was generated that failed to compile here. I will add some debug bits to get more info in future failures.