Rewrite `version` test run-make as an UI test Claiming the simple `version` test from #121876. Reasoning: As discussed in #123297, 10 years ago, some changes to CLI flags warranted the creation of the `version` test. Since it's not actually executing the compiled binary, it has no purpose being a `run-make` test and should instead be an UI test. This is the exact same change as it was shown on my closed PR #123297. Changes were ready, but I did a major Git mishap while trying to fix a tidy error and messed up my branch. The details of this error are explained [here](https://github.com/rust-lang/rust/pull/123297#issuecomment-2041152379).
This directory contains some source code for the Rust project, including:
- The bootstrapping build system
- Various submodules for tools, like cargo, tidy, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.