Rust was conceived as an Erlang-like language, and had "colorless" I/O and green threads in its early implementations. This idea has been demonstrated to be unf

Rust was conceived as an Erlang-like language, and had "colorless" I/O and green threads in its early implementations. This idea has been demonstrated to be unfit for a systems programming language, and scrapped before 1.0: https://github.com/rust-lang/rfcs/blob/0806be4f282144cfcd55b1d20284b43f87cbe1c6/text/0230-remove-runtime.md https://github.com/rust-lang/rfcs/blob/0806be4f282144cfcd55b...