[$] Progress toward a GCC-based Rust compiler

The gccrs project is an ambitiouseffort started in 2014 to implement a Rust compiler within The GNU CompilerCollection (GCC). Even though the task is far from complete, progress hasbeen made since LWN's previous coverage,according to reports from the project. Meanwhile, another hybrid and moremature approach to GCC Rust code generation is available in rustc_codegen_gcc.