The hosted runner: GitHub Actions 5 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.

Error running analysis for csharp: Error: Encountered a fatal error while running "/opt/hostedtoolcache/CodeQL/2.14.3/x64/codeql/codeql database run-queries --ram=5907 --threads=2 /home/runner/work/_temp/codeql_databases/csharp --min-disk-free=1024 -v --expect-discarded-cache --no-intra-layer-parallelism". Exit code was 2 and error was: A fatal error occurred: Could not write a relation to a file (eventual cause: IOException "No space left on device")

'Exception.Exception(SerializationInfo, StreamingContext)' is obsolete: 'This API supports obsolete formatter-based serialization. It should not be called or extended by application code.' (https://aka.ms/dotnet-warnings/SYSLIB0051)

Nullability of reference types in value of type 'System.Threading.Channels.Channel<TMessage>' doesn't match target type 'System.Threading.Channels.Channel<TMessage>?'.

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Nullability of reference types in value of type 'System.Threading.Channels.Channel<TMessage>' doesn't match target type 'System.Threading.Channels.Channel<TMessage>?'.

'Exception.Exception(SerializationInfo, StreamingContext)' is obsolete: 'This API supports obsolete formatter-based serialization. It should not be called or extended by application code.' (https://aka.ms/dotnet-warnings/SYSLIB0051)

'Exception.Exception(SerializationInfo, StreamingContext)' is obsolete: 'This API supports obsolete formatter-based serialization. It should not be called or extended by application code.' (https://aka.ms/dotnet-warnings/SYSLIB0051)

Member 'InvalidSchemaCoordinateException.GetObjectData(SerializationInfo, StreamingContext)' overrides obsolete member 'Exception.GetObjectData(SerializationInfo, StreamingContext)'. Add the Obsolete attribute to 'InvalidSchemaCoordinateException.GetObjectData(SerializationInfo, StreamingContext)'.

'Exception.Exception(SerializationInfo, StreamingContext)' is obsolete: 'This API supports obsolete formatter-based serialization. It should not be called or extended by application code.' (https://aka.ms/dotnet-warnings/SYSLIB0051)

'Exception.GetObjectData(SerializationInfo, StreamingContext)' is obsolete: 'This API supports obsolete formatter-based serialization. It should not be called or extended by application code.' (https://aka.ms/dotnet-warnings/SYSLIB0051)

'Exception.Exception(SerializationInfo, StreamingContext)' is obsolete: 'This API supports obsolete formatter-based serialization. It should not be called or extended by application code.' (https://aka.ms/dotnet-warnings/SYSLIB0051)

You are running out of disk space. The runner will stop working when the machine runs out of disk space. Free space left: 0 MB