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Microsoft.Testing.Extensions.CodeCoverage 18.3.1 breaks test suites with broken pipe error #202
Description
Not sure of the cause because it doesn't show a proper stacktrace.
Downgrading to 18.1.0 fixes it.
Example pipeline failure (not mine): https://github.com/Sauceforge/Saucery/actions/runs/20769025586/job/59650324767
Error:
9s
Run dotnet run -c Release --project Saucery.Core.Tests/Saucery.Core.Tests.csproj -- \
Cannot print exception string because Exception.ToString() failed.
CNamedPipe::Write - Writing message size to named pipe failed.: Broken pipe
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
CSocketNamedPipe::Open - Cannot connect to named pipe.: Connection refused
CNamedPipe::Write - Writing message size to named pipe failed.: Transport endpoint is not connected
Error: Process completed with exit code 134.
Reacted by Andrew Gray
Activity
thomhurst commentedon Jan 7, 2026
Also why does this library follow a completely different versioning scheme?
Youssef1313 commentedon Jan 7, 2026
Transferred the issue to codecoverage repo. fhnaseer Please have a look at this possible regression.
fhnaseer commentedon Jan 8, 2026
Closing this as duplicate of #201
ci: fix intermittent coverage broken-pipe flake (exit code 7) (#208)