"In Hitchcock's Rope, which is composed of just a few very long takes, the dollycam (which is extremely heavy and on rails) ran over a crewmember's foot, breaking it. This was pretty deep into a good take from what I recall, so another stagehand just covered his mouth and dragged him off set rather than let his screams of pain ruin a lot of work."
https://www.imdb.com/name/nm0778734/