Comment by bfrog

Meanwhile a large C++ code base I maintain broke on a minor GCC version bump.

My Rust 1.0 code on the other hand has compiled just fine since the dawn of stable rust.

The only really stable languages might be C89, C99, some fortran, and Cobol.

I think the Rust team does a fantastic job of supporting old code bases with new compilers. Crater is a testament to how much they care in fact.