Question: Roots - infinity potential roots but cannot be confirmed

On a similar note but continuing a Roots discussion

Roots(2^(cos(x))-5)

produces the error    Warning, the expression has an infinity of potential roots, but none could be confirmed  However we know there are none (I'm pretty sure) and Maple should return, No roots exist from this expression. 

Although Maple correctly returns an empty list using a range or numeric option. 

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