[Bug 2076206] [NEW] Upgrade Rust to 1.80.0

[Zixing Liu]

Public bug reported:

Upgrade Rust to 1.80.0

Notable changes in 1.80:

* LazyCell and LazyLock are stabilized in the standard library, so you can use their implementations instead of some third-party libraries.
* Checked cfg names and values: The Rust compiler now checks cfg names and values. If they are invalid or unhandled, a warning or an error will be issued (depending on your settings).
* Exclusive ranges in patterns: match patterns can now have non-inclusive ranges in the matching arms.

https://blog.rust-lang.org/2024/07/25/Rust-1.80.0.html

** Affects: rustc (Ubuntu)
     Importance: Undecided
     Assignee: Zixing Liu (liushuyu-011)
         Status: New

** Changed in: rustc (Ubuntu)
     Assignee: (unassigned) => Zixing Liu (liushuyu-011)

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https://bugs.launchpad.net/bugs/2076206

Title:
   Upgrade Rust to 1.80.0

Status in rustc package in Ubuntu:
  New

Bug description:
  Upgrade Rust to 1.80.0

  Notable changes in 1.80:

  * LazyCell and LazyLock are stabilized in the standard library, so you can use their implementations instead of some third-party libraries.
  * Checked cfg names and values: The Rust compiler now checks cfg names and values. If they are invalid or unhandled, a warning or an error will be issued (depending on your settings).
  * Exclusive ranges in patterns: match patterns can now have non-inclusive ranges in the matching arms.

  https://blog.rust-lang.org/2024/07/25/Rust-1.80.0.html

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