[Bug 2052985] Re: [FFe] Upgrade Rust to 1.76.0

[Zixing Liu]

> Is the intention to make rust 1.76.0 the default rustc in noble (==
'rustc'), or to introduce it as an additional rustc-1.76 package?


It will be made default, and then LP#2054748 will transition this package to rustc-1.76 instead of rustc.

> what rebuild testing has been done on the reverse-dependencies

Performing rebuild testing is currently very difficult because many
micro-packages synchronized from Debian haven't yet formed a stable
dependency tree. Many test failures suggest incomplete sync or
incomplete work from Debian.

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https://bugs.launchpad.net/bugs/2052985

Title:
  [FFe] Upgrade Rust to 1.76.0

Status in rustc package in Ubuntu:
  Incomplete

Bug description:
  Upgrade Rust to 1.76.0

  Notable changes in 1.76:

  * `char` and `u32` now have the same ABI size
  * `std::any::type_name_of_val` is now stable and can be used to print out the type name

  https://blog.rust-lang.org/2024/02/08/Rust-1.76.0.html

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