Hi All, I investigated debbug 1006374 today and found that revision 16603:ba930c1fc380 of graphicsmagick appears to be causing the regression to ruby-mini-magick. A rebuild of graphicsmagick minus this commit allows ruby-mini-magick to pass autopkgtest. I did my testing against Ubuntu but expect the same results for Debian.
changeset: 16603:ba930c1fc380 summary: JPEG: Implement more efficient way to append JPEG profile chunks. -Dan