[bug#66981] Request for merging "rust-team" branch

[Efraim Flashner]

This patch set includes bumping rust up to 1.73.0, the current release.
Also rust-analyzer is absorbed into the rust package and there are many
updates and new crates.  All of the rust packages which build and run
their test suites should now pass.

I personally haven't noticed any changes in broken packages on x86_64,
and I made sure (locally) that rust-1.73 builds on aarch64, so I'm
pretty sure it's more or less ready.

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Efraim Flashner   <efraim@flashner.co.il>   רנשלפ םירפא
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