Process completed with exit code 1.

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

The type 'string?' cannot be used as type parameter 'TKey' in the generic type or method 'Enumerable.ToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)'. Nullability of type argument 'string?' doesn't match 'notnull' constraint.

Nullability of reference types in return type of 'lambda expression' doesn't match the target delegate 'Func<Link<string>, string?>' (possibly because of nullability attributes).

The type 'string?' cannot be used as type parameter 'TKey' in the generic type or method 'Enumerable.ToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)'. Nullability of type argument 'string?' doesn't match 'notnull' constraint.

Nullability of reference types in return type of 'lambda expression' doesn't match the target delegate 'Func<Link<string>, string?>' (possibly because of nullability attributes).

Nullability of reference types in value of type 'Dictionary<string, Link<string>>' doesn't match target type 'Dictionary<string?, Link<string>>'.

Nullability of reference types in value of type 'Dictionary<string, Link<string>>' doesn't match target type 'Dictionary<string?, Link<string>>'.

The type 'TLinkAddress?' cannot be used as type parameter 'TOther' in the generic type or method 'ulong.CreateTruncating<TOther>(TOther)'. Nullability of type argument 'TLinkAddress?' doesn't match constraint type 'System.Numerics.INumberBase<TLinkAddress?>'.

The type 'string?' cannot be used as type parameter 'TKey' in the generic type or method 'Enumerable.ToDictionary<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>)'. Nullability of type argument 'string?' doesn't match 'notnull' constraint.

Nullability of reference types in return type of 'lambda expression' doesn't match the target delegate 'Func<Link<string>, string?>' (possibly because of nullability attributes).