[ENH] Lower priority of "Affines do not match" warning
See poldracklab/fmriprep#837
@@ -160,7 +160,7 @@ def _copyxform(ref_image, out_image, message=None):
orig = nb.load(ref_image)
if not np.allclose(orig.affine, resampled.affine):
- LOG.warning('Affines of input and reference images '
+ LOG.debug('Affines of input and reference images '
'do not match, CopyXForm will probably '
'make the input image useless.')
