Some time ago, I was thinking about what I could contribute back to the Rust community. I was looking for something with impact, especially in relation to the amount of time and effort I would have to put in. Around this time I was becoming more active on the community Discord, especially in the channel about unsafe Rust. A lot of discussions there about what is and isn't valid in current Rust are settled or nearly settled by running Miri on some demonstrative snippet. But Miri also supports running a crate's test suite. So on a lark, I tried out a highly-downloaded crate. Miri reported UB. Hunh.