Limit computation causes Sage to crash

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The following code :

f(x)=(x^x-sin(x)^sin(x))/(x^3*log(x))
show(f)
f(x).limit(x=0)

causes Sage to crash [the expected output is 1/6].

My desktop Sage installation gives the following error message :

;;;
;;; Detected access to protected memory, also kwown as 'bus or segmentation fault'.
;;; Jumping to the outermost toplevel prompt
;;;

The online Sage notebook tells me :

;;;
;;; Binding stack overflow.
;;; Jumping to the outermost top

What is wrong ?