Process completed with exit code 1.

Possible null reference assignment.

Possible null reference argument for parameter 'value' in 'Entry.Entry(TKey key, TValue value)'.

Non-nullable field 'source' 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.

Converting null literal or possible null value to non-nullable type.

Possible null reference argument for parameter 'value' in 'bool RobinhoodMap<uint, string>.Emplace(uint key, string value)'.

Nullability of type of parameter 'obj' doesn't match overridden member (possibly because of nullability attributes).

Unboxing a possibly null value.

Test methods should not use blocking task operations, as they can cause deadlocks. Use an async test method and await instead. (https://xunit.net/xunit.analyzers/rules/xUnit1031)