0. #lang racket
1.  
2. (compile #'(begin
3.              (require (for-meta 1 racket)
4.                       (for-meta 2 racket))
5.              (begin-for-syntax
6.                (begin-for-syntax
7.                  (define x 5)))))

=>

eval:2:0: define: unbound identifier at phase 2;

also, no #%app syntax transformer is bound

at: define

in: (define x 5)