.Net 5.0 Preview 7, fails on Int.Parse("-1") with
Message:
System.FormatException : Input string was not in a correct format.
Stack Trace:
Number.ThrowOverflowOrFormatException(ParsingStatus status, TypeCode type)
Number.ParseInt32(ReadOnlySpan`1 value, NumberStyles styles, NumberFormatInfo info)
Int32.Parse(String s)
NetCore50prev7_Tests.NegativeIntegerFailsParse() line 15

public class NetCore50prev7_Tests
{
[Fact]
public void NegativeIntegerFailsParse()
{
int.Parse("-1");
}
}