One of my friends shared a story of his batchmate at BIT Mesra who got a F* in DS Lab and theory in the second semester.
It was a spring semester. The results weren’t out by then and had he waited for the results, he would have to wait for another year to give the exam. So, he registered the papers that summer and cleared them. He got an A in both and hoped that his spring semester would be carrying an F, which it did.