To achieve the smallest size, you have to ditch main entirely and use _start, along with passing certain linker flags not to align sections. See https://darkcod

To achieve the smallest size, you have to ditch main entirely and use _start, along with passing certain linker flags not to align sections. See https://darkcoding.net/software/a-very-small-rust-binary-indeed/ https://darkcoding.net/software/a-very-small-rust-binary-ind... You can easily get around 500 bytes this way