What does “required value ... did not mean to have a known value” and “meant built-in, but not connected in the optimization environment”?

Question

I encountered a compile-time error that I do not understand when working with F # in Visual Studio 2012.

I could find a minimal snippet here: http://ideone.com/hbhbF

type Foo() = inherit System.Exception() member inline this.Bar() = () Foo().Bar() 

What do the following error messages mean?

 /home/iU0RLi/prog.fs(3,22): error FS0073: internal error: the mustinline value 'Bar' was not inferred to have a known value /home/iU0RLi/prog.fs(5,1): error FS1114: The value 'Prog.Foo.Bar' was marked inline but was not bound in the optimization environment /home/iU0RLi/prog.fs(3,22): error FS1113: The value 'Bar' was marked inline but its implementation makes use of an internal or private function which is not sufficiently accessible /home/iU0RLi/prog.fs(5,1): warning FS1116: A value marked as 'inline' has an unexpected value /home/iU0RLi/prog.fs(5,1): error FS1118: Failed to inline the value 'Bar' marked 'inline', perhaps because a recursive value was marked 'inline'