Update charmcraft.yaml build tools (16/edge)

[renovate]

This PR contains the following updates:

Package	Update	Change	Age	Adoption	Passing	Confidence
rust-lang/rust	minor	1.85.1 -> 1.86.0
uv (source, changelog)	patch	0.6.11 -> 0.6.13

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Release Notes

rust-lang/rust (rust-lang/rust)

v1.86.0

Compare Source

==========================

Language

• Stabilize upcasting trait objects to supertraits.
• Allow safe functions to be marked with the #[target_feature] attribute.
• The missing_abi lint now warns-by-default.
• Rust now lints about double negations, to catch cases that might have intended to be a prefix decrement operator (--x) as written in other languages. This was previously a clippy lint, clippy::double_neg, and is now available directly in Rust as double_negations.
• More pointers are now detected as definitely not-null based on their alignment in const eval.
• Empty repr() attribute applied to invalid items are now correctly rejected.
• Inner attributes #![test] and #![rustfmt::skip] are no longer accepted in more places than intended.

Compiler

• Debug-assert that raw pointers are non-null on access.
• Change -O to mean -C opt-level=3 instead of -C opt-level=2 to match Cargo's defaults.
• Fix emission of overflowing_literals under certain macro environments.

Platform Support

• Replace i686-unknown-redox target with i586-unknown-redox.
• Increase baseline CPU of i686-unknown-hurd-gnu to Pentium 4.
• New tier 3 targets:
  • {aarch64-unknown,x86_64-pc}-nto-qnx710_iosock.
    For supporting Neutrino QNX 7.1 with io-socket network stack.
  • {aarch64-unknown,x86_64-pc}-nto-qnx800.
    For supporting Neutrino QNX 8.0 (no_std-only).
  • {x86_64,i686}-win7-windows-gnu.
    Intended for backwards compatibility with Windows 7. {x86_64,i686}-win7-windows-msvc are the Windows MSVC counterparts that already exist as Tier 3 targets.
  • amdgcn-amd-amdhsa.
  • x86_64-pc-cygwin.
  • {mips,mipsel}-mti-none-elf.
    Initial bare-metal support.
  • m68k-unknown-none-elf.
  • armv7a-nuttx-{eabi,eabihf}, aarch64-unknown-nuttx, and thumbv7a-nuttx-{eabi,eabihf}.

Refer to Rust's [platform support page][platform-support-doc]
for more information on Rust's tiered platform support.

Libraries

• The type of FromBytesWithNulError in CStr::from_bytes_with_nul(bytes: &[u8]) -> Result<&Self, FromBytesWithNulError> was changed from an opaque struct to an enum, allowing users to examine why the conversion failed.
• Remove RustcDecodable and RustcEncodable.
• Deprecate libtest's --logfile option.
• On recent versions of Windows, std::fs::remove_file will now remove read-only files.

Stabilized APIs

• {float}::next_down
• {float}::next_up
• <[_]>::get_disjoint_mut
• <[_]>::get_disjoint_unchecked_mut
• slice::GetDisjointMutError
• HashMap::get_disjoint_mut
• HashMap::get_disjoint_unchecked_mut
• NonZero::count_ones
• Vec::pop_if
• sync::Once::wait
• sync::Once::wait_force
• sync::OnceLock::wait

These APIs are now stable in const contexts:

• hint::black_box
• io::Cursor::get_mut
• io::Cursor::set_position
• str::is_char_boundary
• str::split_at
• str::split_at_checked
• str::split_at_mut
• str::split_at_mut_checked

Cargo

• When merging, replace rather than combine configuration keys that refer to a program path and its arguments.
• Error if both --package and --workspace are passed but the requested package is missing. This was previously silently ignored, which was considered a bug since missing packages should be reported.
• Deprecate the token argument in cargo login to avoid shell history leaks.
• Simplify the implementation of SourceID comparisons. This may potentially change behavior if the canonicalized URL compares differently in alternative registries.

Rustdoc

• Add a sans-serif font setting.

Compatibility Notes

• The wasm_c_abi future compatibility warning is now a hard error.
  Users of wasm-bindgen should upgrade to at least version 0.2.89, otherwise compilation will fail.
• Remove long-deprecated no-op attributes #![no_start] and #![crate_id].
• The future incompatibility lint cenum_impl_drop_cast has been made into a hard error. This means it is now an error to cast a field-less enum to an integer if the enum implements Drop.
• SSE2 is now required for "i686" 32-bit x86 hard-float targets; disabling it causes a warning that will become a hard error eventually.
  To compile for pre-SSE2 32-bit x86, use a "i586" target instead.

Internal Changes

These changes do not affect any public interfaces of Rust, but they represent
significant improvements to the performance or internals of rustc and related
tools.

• Build the rustc on AArch64 Linux with ThinLTO + PGO.
  The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster.

astral-sh/uv (uv)

v0.6.13

Compare Source

Enhancements

• Add --show-version to uv python find (#​12376)
• Remove --no-config warning from uv pip compile and uv pip sync (#​12642)
• Skip repeated directories in PATH when searching for Python interpreters (#​12367)
• Unset SCRIPT_PATH in relocatable activation script (#​12672)
• Add UV_PYTHON_DOWNLOADS_JSON_URL to set custom managed python sources (#​10939)
• Reject pyproject.toml files in uv pip compile -o (#​12673)
• Respect the --offline flag for Git operations (#​12619)

Bug fixes

• Warn instead of error if CRC appears to be missing (#​12722)
• Avoid infinite loop in uv export with conflicts (#​12726)

Rust API

• Update MSRV to 1.84 (#​12670)

v0.6.12

Compare Source

Enhancements

• Report the queried executable path in uv python list (#​12628)
• Improve archive unpack error messages (#​12627)

Bug fixes

• Respect authenticate when using explicit = true (#​12631)
• Normalize extra and group names in uv add and uv remove (#​12586)
• Enforce CRC-32 checks when unpacking archives (#​12623)
• Fix parsing of python-platform in settings files (#​12592)

Documentation

• Add note about uv build to package = false (#​12608)
• Add index fallback note to authenticate = always documentation (#​12498)
• Fix invalid 'kind' reference in flat index docs (#​12583)

---

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.47%. Comparing base (6030b87) to head (8fc429e).
Report is 1 commits behind head on 16/edge.

Additional details and impacted files

@@           Coverage Diff            @@
##           16/edge     #917   +/-   ##
========================================
  Coverage    74.47%   74.47%           
========================================
  Files           12       12           
  Lines         3550     3550           
  Branches       508      508           
========================================
  Hits          2644     2644           
  Misses         709      709           
  Partials       197      197           

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