General::itflrw
It is not possible, using the indicated value of $MaxExtraPrecision, to unambiguously determine the number of iterations:
Range[0, Pi - 1*^-100, Degree]//Length
The warning in this example can be avoided by increasing the value of $MaxExtraPrecision:
Block[{$MaxExtraPrecision = 1000}, Range[0, Pi - 1*^-100, Degree]//Length]