rustc version mismatches

[local-optimum]

Hey folks. Whenever I try to npm run anchor build i get a variation of the following error:

error: package solana-program v1.18.26cannot be built because it requires rustc 1.75.0 or newer, while the currently active rustc version is 1.68.0-dev Either upgrade to rustc 1.75.0 or newer, or use cargo update -p [email protected] --precise ver whereveris the latest version ofsolana-program supporting rustc 1.68.0-dev

My rustc versions is latest stable but I've also tried specifying exactly 1.75.0, I've tried upgrading cargo, I've tried downgrading cargo to 0.29.0, I've tried creating a rust-toolchain.toml to force it, i've cleaned and rebuilt over and over again and it just will not work.

If I could find some combination of version numbers for these things that worked I would love to propose a fix but I'm lost at this point. Not being able to build the default app in the documentation is a real pain.

I don't know if it's to do with the fact that it also won't build if the version of the Cargo.lock file is set to 4 and I have to edit that to 3 to get the build to start (this was on 0.30.0)? This error throws before the rust one.