Cargo lock file version (RUST)

[ziggybaz]

Kindly update rustup to the latest version.

I was using the latest version which was running the lock file at version 4, and a quick look shows yours is on version 3, the fix was downgrading the version on my end.

Just to make it easier on everyone I think it would be better if it was updated on your build end instead of every user having to do so.

Logs:

remote: [build] >   lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?
remote: [build] Error: process "/bin/sh -c cargo build --release --target-dir=/tmp/codecrafters-git-target" did not complete successfully: exit code: 101.
remote: [build] > error: failed to parse lock file at: /app/Cargo.lock
remote: [build] > 
remote: [build] > Caused by:
remote: [build] >   lock file version `4` was found, but this version of Cargo does not understand this lock file, perhaps Cargo needs to be updated?
remote: [build] Build failed. Check the logs above for the reason.

[ziggybaz]

Rare case though, only happened because I had to rm the Cargo.lock file provided while tinkering and therefore recompiled with a new build, obviously if I had kept the original wouldn't have encountered the problem.