Fortunately there are more than two compiler versions in the world.

It's easy to install different rust toolchains. You could increment the toolchain version forward and find the next toolchain to include the fix, or even backport the fix to a custom toolchain if you want.

The comments acting like Rust is breaking code all the time are also pretty lost. I've been developing Rust since +/- the 1.0 days and this isn't a common occurrence. When something does need to change it's usually a tightening up of something that was incorrect in the past, and it's easy to fix.

Some of these comments act like everything is going to collapse at any moment and the old code will be unusable, which is pretty ridiculous