assert!() macro's formatting is unlike anything else

[CryZe]

For some reason the assert!() macro is not following the normal formatting rules:

component is not on a new line and the final ); isn't either. Here's the playground repro by shepmaster: https://play.integer32.com/?version=stable&mode=debug&edition=2018&gist=ffd800255272b66f60170a907f1bc8e2