Compat issues with assembly mscorlib:
TypesMustExist : Type 'System.TupleExtensions' does not exist in the implementation but it does exist in the contract.
TypesMustExist : Type 'System.Runtime.CompilerServices.TupleElementNamesAttribute' does not exist in the implementation but it does exist in the contract.
Compat issues with assembly netstandard:
TypeCannotChangeClassification : Type 'System.RuntimeArgumentHandle' is a 'ref struct' in the implementation but is a 'struct' in the contract.
TypeCannotChangeClassification : Type 'System.TypedReference' is a 'ref struct' in the implementation but is a 'struct' in the contract.
Compat issues with assembly System.Core:
TypesMustExist : Type 'System.Security.Cryptography.ECCurve' does not exist in the implementation but it does exist in the contract.
TypesMustExist : Type 'System.Security.Cryptography.ECParameters' does not exist in the implementation but it does exist in the contract.
TypesMustExist : Type 'System.Security.Cryptography.ECPoint' does not exist in the implementation but it does exist in the contract.

# Compat issues complaining about class vs delegate and class vs struct are because of a bug in APICompat tool where the implementation is picking
# the wrong core assembly. It is picking System.Runtime instead of System.Private.CoreLib, there isn't any straight forward way to fix so baselining.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Action<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, TResult>' is a 'class' in the implementation but is a 'delegate' in the contract.
TypeCannotChangeClassification : Type 'System.IO.HandleInheritability' is a 'class' in the implementation but is a 'struct' in the contract.
TypeCannotChangeClassification : Type 'System.IO.FileAttributes' is a 'class' in the implementation but is a 'struct' in the contract.