[Bug 1993183] Re: rustc linux kernel requirements

[Simon Chopin]

I'll try to put together a straight merge from Debian for rustc 1.62
this week in a PPA, but no promises. If I don't manage it, it'll have to
wait for a couple of weeks unless someone else from Foundations picks it
up.

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https://bugs.launchpad.net/bugs/1993183

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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