The job was canceled because "ubuntu-latest" failed.

The operation was canceled.

Non-nullable field '_pipeHandleAsString' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Cannot convert null literal to non-nullable reference type.

Nullability of reference types in type of parameter 'x' of 'bool ProjectItemItemSpecEqualityComparer.Equals(IProjectItem x, IProjectItem y)' doesn't match implicitly implemented member 'bool IEqualityComparer<IProjectItem>.Equals(IProjectItem? x, IProjectItem? y)' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'y' of 'bool ProjectItemItemSpecEqualityComparer.Equals(IProjectItem x, IProjectItem y)' doesn't match implicitly implemented member 'bool IEqualityComparer<IProjectItem>.Equals(IProjectItem? x, IProjectItem? y)' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'x' of 'int TargetFrameworkComparer.Compare(string x, string y)' doesn't match implicitly implemented member 'int IComparer<string>.Compare(string? x, string? y)' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'y' of 'int TargetFrameworkComparer.Compare(string x, string y)' doesn't match implicitly implemented member 'int IComparer<string>.Compare(string? x, string? y)' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'exception' of 'void TextWriterLogger.Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)' doesn't match implicitly implemented member 'void ILogger.Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception, Func<TState, Exception?, string> formatter)' (possibly because of nullability attributes).

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Unexpected input(s) 'include-prerelease', valid inputs are ['dotnet-version', 'dotnet-quality', 'global-json-file', 'source-url', 'owner', 'config-file', 'cache', 'cache-dependency-path']