Function circle3 

pub fn circle3(
    points: &[Point],
    options: &FitOptions<'_, Circle>,
    tol: Tolerances,
) -> OgeomResult<Fit<Circle>>

The circle through points in space: the distance a residual measures is to the circle itself, out of its plane as well as across it, and is signed by which side of the cylinder through the circle the point lies.

Errors

As sphere, with three points needed; refused where they lie on one line.