Process completed with exit code 1.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Possible null reference return.

Possible null reference argument for parameter 'obj' in 'string PrettyPrintingExtensions.ToUsefulString(object obj)'.

Possible null reference argument for parameter 'obj' in 'string PrettyPrintingExtensions.ToUsefulString(object obj)'.

Possible null reference argument for parameter 'expectedObject' in 'string PrettyPrintingExtensions.FormatErrorMessage(object actualObject, object expectedObject)'.

Possible null reference argument for parameter 'actualObject' in 'string PrettyPrintingExtensions.FormatErrorMessage(object actualObject, object expectedObject)'.

Dereference of a possibly null reference.