I'm logging a separate issue for this because I'm not sure it is the same as #56 or #51, although it might be.

In this repo:

https://github.com/ericsink/sawdust

If I cd into the sd_tests directory and type dotnet test, it takes about six seconds (on my machine).

OTOH, when I did:

dotnet add package AltCover
dotnet test /p:AltCover=true

It ran for hours before I killed it, consuming a large amount of disk space.

Anyway, I thought perhaps having another repro case might be helpful.