When using .NET 6 (with .NET 8 installed) picking wrong version of System.Text.Json [BUG]

[clinington]

Describe the bug
So I have both sdks installed, i have a global json pinning the version to 6.0.419.

The version of coverlet.collector is 6.0.1.

Running:

dotnet test --configuration Release --filter Category!=Manual --logger trx --collect:"XPlat Code Coverage;Format=opencover,cobertura"

gets this result:

Data collector 'XPlat code coverage' message: [coverlet]System.IO.FileLoadException: Could not load file or assembly 'System.Text.Json, Version=8.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. Could not find or load a specific file. (0x80131621)

However, if you switch coverlet.collector to version 6.0.0 and run the same command again then the issue goes away - assuming that it has something to do with the switch from newtonsoft to system.text.json

❗ Please also read Known Issues

[niravmsoni]

Faced the same issue in one of our pipeline after updating the package to the latest version. After downgrading it to 6.0.0, it works for me. Thanks for the workaround @clinington

[patelriki13]

Same issue for me... downgraded to version 6.0.0 and working fine.

[clinington]

Yeah - that was my fix - then went to .net8 and bumped back up again.

However, the there's a security vulnerability with the newtonsoft package that is used by version 6.0.0 so it's not a great workaround...

[daveMueller]

Yes this is a duplicate of #1625. We already fixed this in #1637. You can try it out by consuming our nightly: https://github.com/coverlet-coverage/coverlet/blob/master/Documentation/ConsumeNightlyBuild.md

[daveMueller]

We now have a new official release 6.0.2 that can be consumed from nuget.org.