unreachable!() in debug, std::intrinsics::unreachable() in release.
Use the crates.io repository; add this to your Cargo.toml along
with the rest of your dependencies:
toml
[dependencies]
new_debug_unreachable = "1.0"
Jonathan Reem is the original author of debug-unreachable.
Matt Brubeck is the maintainer of this fork.
MIT