Crack in Primary Fermenter

One day into fermentation I noticed my brewing bucket had cracked and was leaking wort. I tried plugging the hole with no success. Unable to fix the leak I ended up having to pour the wort/yeast into a new bucket.

The yeast had only been added the evening before, and I made the pour at lunchtime when I noticed the leak - so fermentation had been ongoing for a maximum of 12 hours or so. Obviously this process will have re-aerated the wort/yeast - will this ruin the beer?

it will still be beer.....next time use the auto siphon.

Assuming you properly sanitized the new vessel all should be good

The yeast are going to burn through that oxygen in short order. Depending on a bunch of other factors, you might get some minor off flavors from excessive yeast growth, but likely not. It is like the same (small) risk you would run over-aerating the wort in the first place.

The real oxygen problems come after fermentation is complete. It the beer gets aerated then, it will degrade quickly.

Wierd, a bottling BUCKET cracking? How on earth did you manage that? Im used to the tons of glass carboy crack threads, this one confuses me.