System.IO.IOException: No space left on device : '/home/runner/runners/2.320.0/_diag/Worker_20241023-190209-utc.log' at System.IO.RandomAccess.WriteAtOffset(SafeFileHandle handle, ReadOnlySpan`1 buffer, Int64 fileOffset) at System.IO.Strategies.BufferedFileStreamStrategy.FlushWrite() at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder) at System.Diagnostics.TextWriterTraceListener.Flush() at GitHub.Runner.Common.HostTraceListener.WriteHeader(String source, TraceEventType eventType, Int32 id) at GitHub.Runner.Common.HostTraceListener.TraceEvent(TraceEventCache eventCache, String source, TraceEventType eventType, Int32 id, String message) at System.Diagnostics.TraceSource.TraceEvent(TraceEventType eventType, Int32 id, String message) at GitHub.Runner.Worker.Worker.RunAsync(String pipeIn, String pipeOut) at GitHub.Runner.Worker.Program.MainAsync(IHostContext context, String[] args)

The hosted runner: GitHub Actions 11 lost communication with the server. Anything in your workflow that terminates the runner process, starves it for CPU/Memory, or blocks its network access can cause this error.