The dark one looks like a fly problem. I've had plenty of those. The other one may be OE or an issue with the shape of the chrysalis. I've had deformed chrysalis that kept the butterfly from emerging. It's been a challenging year.
I always mist the chrysalis/pupae once a day. With inside air conditioning, things get dried out and it can actually cause them to have problems getting out of the chrysalis. I figure in nature that they are rained on and they get the morning dew every day. Then, we bring them inside. I've had people tell me that their state has plenty of humidity, but the butterflies can't tell them how they are doing. So, they emerge. Would it have been better if they misted a little while in the chrysalis/pupae stage? I try to mimic nature by providing as much natural light as I can (not direct sunlight inside because the light through the windows is more intense) and misting the pupae. I don't mist the caterpillars. They get enough moisture from the milkweed. I do provide more moisture for the eggs by misting the paper towel underneath a plastic lid (the leaf pieces are on the lid, the paper towel is under the lid, this keeps the leaves from rotting so fast).
Herndon, VA (USA)
Take care of the small things....