[Bug 1993183] Re: rustc linux kernel requirements

[Simon Chopin]

Dimitri, do you know if upstream's rustc requirements are just 1.62, or
1.62 and above? I'm guessing they're using unstable features in the
code, so they might be picky with the exact compiler version. If so,
we'll need to get moving on branching out rustc into rustc-1.N packages
:/

** Changed in: rustc (Ubuntu)
   Importance: Undecided => High

** Changed in: rustc (Ubuntu)
       Status: New => Incomplete

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Title:
  rustc linux kernel requirements

Status in rustc package in Ubuntu:
  Incomplete

Bug description:
  linux kernel is adding rustc requirements.

  ideally we need a compatible version of rustc in $devel release, and
  last $lts, due to backporting of $devel kernels to latest $lts at
  point releases.

  Attempting the rust build in jammy today results in the following
  checks failing:

  
  sh ./scripts/rust_is_available.sh -v
  ***
  *** Rust compiler '/usr/bin/rustc' is too old.
  ***   Your version:    1.61.0
  ***   Minimum version: 1.62.0
  ***
  ***
  *** Rust bindings generator 'bindgen' is too new. This may or may not work.
  ***   Your version:     0.59.1
  ***   Expected version: 0.56.0
  ***

  Please update rustc to 1.62.0 in LL devel release and Jammy.

  Separately I will look if upstream kernel can upgrade to a newer
  bindgen, or if we need to request a historical bindgen packaging as
  bindgen-0.56 or some such.

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