Duplicate annotations in build output

[Eric J. Smith]

Version

2.0

Details

I am getting duplicate github annotations for build warnings. Any ideas how I can fix them?

Here is a sample output:
https://github.com/exceptionless/Exceptionless/actions/runs/2458030356

Steps to reproduce

Run build with warnings using this library for output

[Oleksii Holub]

Do you mean these?

These are not produced by GitHubActionsTestLogger, but by dotnet CLI. Maybe you end up running dotnet build implicitly or explicitly twice?