visual test failures with mapnik 2.3.x and 'vertex_dist_epsilon:1e-5' https://github.com/mapnik/mapnik/issues/2196

failures.txt

Visual rendering: 19 failed / 776 passed
1) 1104 different pixels:
	/tmp/mapnik-visual-images/image-filters-multi-blur-inflate-512-512-1.0-agg.png (actual)
	tests/visual_tests/images/image-filters-multi-blur-inflate-512-512-1.0-agg-reference.png (expected)
2) 180 different pixels:
	/tmp/mapnik-visual-images/image-filters-multi-blur-inflate-512-512-2.0-agg.png (actual)
	tests/visual_tests/images/image-filters-multi-blur-inflate-512-512-2.0-agg-reference.png (expected)
3) 68 different pixels:
	/tmp/mapnik-visual-images/lines-5-800-800-1.0-agg.png (actual)
	tests/visual_tests/images/lines-5-800-800-1.0-agg-reference.png (expected)
4) 126 different pixels:
	/tmp/mapnik-visual-images/lines-5-800-800-2.0-agg.png (actual)
	tests/visual_tests/images/lines-5-800-800-2.0-agg-reference.png (expected)
5) 404 different pixels:
	/tmp/mapnik-visual-images/lines-5-600-600-1.0-agg.png (actual)
	tests/visual_tests/images/lines-5-600-600-1.0-agg-reference.png (expected)
6) 10 different pixels:
	/tmp/mapnik-visual-images/lines-5-600-600-2.0-agg.png (actual)
	tests/visual_tests/images/lines-5-600-600-2.0-agg-reference.png (expected)
7) 96 different pixels:
	/tmp/mapnik-visual-images/lines-5-400-400-1.0-agg.png (actual)
	tests/visual_tests/images/lines-5-400-400-1.0-agg-reference.png (expected)
8) 165 different pixels:
	/tmp/mapnik-visual-images/lines-5-400-400-2.0-agg.png (actual)
	tests/visual_tests/images/lines-5-400-400-2.0-agg-reference.png (expected)
9) 70 different pixels:
	/tmp/mapnik-visual-images/lines-5-200-200-1.0-agg.png (actual)
	tests/visual_tests/images/lines-5-200-200-1.0-agg-reference.png (expected)
10) 43 different pixels:
	/tmp/mapnik-visual-images/lines-5-200-200-2.0-agg.png (actual)
	tests/visual_tests/images/lines-5-200-200-2.0-agg-reference.png (expected)
11) 108 different pixels:
	/tmp/mapnik-visual-images/lines-6-800-800-1.0-agg.png (actual)
	tests/visual_tests/images/lines-6-800-800-1.0-agg-reference.png (expected)
12) 16 different pixels:
	/tmp/mapnik-visual-images/lines-6-800-800-2.0-agg.png (actual)
	tests/visual_tests/images/lines-6-800-800-2.0-agg-reference.png (expected)
13) 400 different pixels:
	/tmp/mapnik-visual-images/lines-6-600-600-1.0-agg.png (actual)
	tests/visual_tests/images/lines-6-600-600-1.0-agg-reference.png (expected)
14) 10 different pixels:
	/tmp/mapnik-visual-images/lines-6-600-600-2.0-agg.png (actual)
	tests/visual_tests/images/lines-6-600-600-2.0-agg-reference.png (expected)
15) 109 different pixels:
	/tmp/mapnik-visual-images/lines-6-400-400-1.0-agg.png (actual)
	tests/visual_tests/images/lines-6-400-400-1.0-agg-reference.png (expected)
16) 179 different pixels:
	/tmp/mapnik-visual-images/lines-6-200-200-1.0-agg.png (actual)
	tests/visual_tests/images/lines-6-200-200-1.0-agg-reference.png (expected)
17) 43 different pixels:
	/tmp/mapnik-visual-images/lines-6-200-200-2.0-agg.png (actual)
	tests/visual_tests/images/lines-6-200-200-2.0-agg-reference.png (expected)
18) 988 different pixels:
	/tmp/mapnik-visual-images/image-filters-multi-blur-512-512-1.0-agg.png (actual)
	tests/visual_tests/images/image-filters-multi-blur-512-512-1.0-agg-reference.png (expected)
19) 1391 different pixels:
	/tmp/mapnik-visual-images/image-filters-multi-blur-512-512-2.0-agg.png (actual)
	tests/visual_tests/images/image-filters-multi-blur-512-512-2.0-agg-reference.png (expected)