Upgrade Rust to 1.75.0

[Zixing Liu]

Upgrade Rust to 1.75.0

Notable changes in 1.75:

- `async fn` can now be used in `Trait`s

https://blog.rust-lang.org/2023/12/28/Rust-1.75.0.html

[Zixing Liu (liushuyu-011)]

Preliminary packages have been uploaded to https://launchpad.net/~liushuyu-011/+archive/ubuntu/rust-updates-1.75/+packages.
The complete corresponding source can be found at https://git.launchpad.net/~canonical-foundations/ubuntu/+source/rustc/tree/?h=merge-1.75.

--------
Lintian report:
E: rustc source: field-too-long Vendored-Sources-Rust (11110 chars > 5000)
W: rustc source: mismatched-override missing-license-paragraph-in-dep5-copyright debian/copyright mpl-2.0+ [debian/source/lintian-overrides:16]
W: rustc source: missing-license-paragraph-in-dep5-copyright mpl-2.0+ [debian/copyright:2332]
W: rustc source: unknown-field Vendored-Sources-Rust
N: 0 hints overridden; 1 unused override
N: Some overrides were ignored.
N: Use --verbose for more information.
Finished running lintian.
Now signing changes and any dsc files...
-------

Autopkgtest reports:

https://autopkgtest.ubuntu.com/results/autopkgtest-noble-liushuyu-011-rust-updates-1.75/?format=plain

[Launchpad Janitor (janitor)]

This bug was fixed in the package rustc - 1.75.0+dfsg0ubuntu1-0ubuntu1

---------------
rustc (1.75.0+dfsg0ubuntu1-0ubuntu1) noble; urgency=medium

  * New upstream release 1.75.0 (LP: #2047858)
    - d/patches: Refresh patches
    - d/copyright: update the list of unused crates
    - d/copyright: update copyright data
    - d/libstd-rust-*: bump version to 1.75
    - d/patches: remove obsoleted patches
    - d/s/lintian-overrides: update lintian overrides
    - d/control: update vendored crate list

 -- Zixing Liu <email address hidden> Tue, 02 Jan 2024 12:09:03 -0700