VerificationException "Operation could destabilize the runtime." when mapping. Passing and failing tests

ForGitHub.cs

#region Types for VerificationFailedExceptionTest

public class Class1
{
    public string Token { get; set; }
}

public class Class2
{
    private readonly string _token;

    [MapField(Storage = "_token")]
    public string Token
    {
        get { return _token; }
    }
}

public class Class3
{
    private string _token;

    [MapField(Storage = "_token")]
    public string Token
    {
        get { return _token; }
    }
}

#endregion

[TestMethod]
public void VerificationFailedExceptionTest_Fails()
{
    var ormToDomain = Map.GetObjectMapper<Class1, Class2>();

    Class1 record = new Class1 { Token = "test" };
    ormToDomain(record);
}

[TestMethod]
public void VerificationFailedExceptionTest_Passes()
{
    var ormToDomain = Map.GetObjectMapper<Class1, Class3>();

    Class1 record = new Class1 { Token = "test" };
    ormToDomain(record);
}