Chain readers generate incorrect hash results

[rbtcollins]

I was getting odd hash outcomes which I have tracked down to the use of Chain in my code: murmur3 doesn't generate the same hash result when Chain is used vs copying the content into one buffer and using a single Cursor. I've put up a demonstration branch at https://github.com/rbtcollins/murmur3/tree/chain that demonstrates the problem.

[qbx2]

I'm experiencing the same issue: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=cbe4b38170190c99da706dc9febf9a16