An anonymous person originally cried for this problem:
/*-------------------------------------------------------------
Maxima version: 5.12.0
Maxima build date: 9:29 6/7/2007
host type: x86_64-redhat-linux-gnu
lisp-implementation-type: GNU Common Lisp (GCL)
lisp-implementation-version: GCL 2.6.7
-------------------------------------------------------------*/
/* The w1 is failed to be factored. */
w : ( 7*x**3*y**2 + y**2 - 2*x*y - 5 ) * ( 6*x**3*z**2 - 3*x*y + y + x );
w1 : expand ( w**3 - 8 );
factor( w1 );
/* The end.*/