We had one of our build agent’s disks fill up entirely, and as part of our investigation we found that there were a number of folders containing
dotnet-symbolic-execution.exe that had not been cleaned up. In total it reached 2893 folders containing what seemed to be the same executable. The oldest of these seemed to be from the 10th of February.
This meant that there was about 3.82 GB of temporary files that were cached here.