It's not obvious (unless you follow the author on twitter[1]) but a large portion of this has been rewritten with new content. Among other things, it now includ

It's not obvious (unless you follow the author on twitter[1]) but a large portion of this has been rewritten with new content. Among other things, it now includes a section on detecting undefined behavior in unsafe blocks using Miri[2], which is incredibly neat. [1] https://twitter.com/Gankra_/status/1486928208528293888 https://twitter.com/Gankra_/status/1486928208528293888 [2] https://github.com/rust-lang/miri https://github.com/rust-lang/miri