This isn't sexist. I've been told this, and I've told this to junior engineers of both genders. It's not even just a stretch to claim it's sexist, it's ridiculous to. The remark about prioritizing is actually more troublesome, and entirely independent of this comment.
"Some things went well, others not so well. I am not giving you a list specifying each. It has nothing to do with your technical skills; that is normal to have room for improvement. We just feel there is a lack of chemistry with the team."
This is just the way things are, especially in tech. It's not sexist, it's just unfair and dumb and political. And it's applied to all individuals. I've had it applied to me. I've been in management conversations on how to approach others to apply it to. This just isn't sexist.
"Carl is a difficult person to work with. But I trust in you to accomplish this. You will use your feminine approach and you’ll be fine."
"Boys are just predisposed for technology by nature, and there is nothing we can do. I see it in my children: While my son prefers video games, my daughter only cares about Facebook."
These are both sexist. The first one is disgusting and might also border on sexual harassment. The second is a gross demonstration of "anecdotes are not data."