Update charmcraft.yaml build tools (16/edge)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence	Update
poetry (changelog)	2.3.0 → 2.3.1			patch
rust-lang/rust	1.92.0 → 1.93.0			minor
uv (source, changelog)	0.9.26 → 0.9.27			patch

---

Release Notes

python-poetry/poetry (poetry)

v2.3.1

Compare Source

Fixed

• Fix an issue where cached information about each package was always considered outdated (#​10699).

Docs

• Document SHELL_VERBOSITY environment variable (#​10678).

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

v1.93.0

Compare Source

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

Language

• Stabilize several s390x vector-related target features and the is_s390x_feature_detected! macro
• Stabilize declaration of C-style variadic functions for the system ABI
• Emit error when using some keyword as a cfg predicate
• Stabilize asm_cfg
• During const-evaluation, support copying pointers byte-by-byte
• LUB coercions now correctly handle function item types, and functions with differing safeties
• Allow const items that contain mutable references to static (which is very unsafe, but not always UB)
• Add warn-by-default const_item_interior_mutations lint to warn against calls which mutate interior mutable const items
• Add warn-by-default function_casts_as_integer lint

Compiler

• Stabilize -Cjump-tables=bool. The flag was previously called -Zno-jump-tables.

Platform Support

• Promote riscv64a23-unknown-linux-gnu to Tier 2 (without host tools)

Refer to Rust's platform support page
for more information on Rust's tiered platform support.

Libraries

• Stop internally using specialization on the Copy trait as it is unsound in the presence of lifetime dependent Copy implementations. This may result in some performance regressions as some standard library APIs may now call Clone::clone instead of performing bitwise copies
• Allow the global allocator to use thread-local storage and std::thread::current()
• Make BTree::append not update existing keys when appending an entry which already exists
• Don't require T: RefUnwindSafe for vec::IntoIter<T>: UnwindSafe

Stabilized APIs

• <[MaybeUninit<T>]>::assume_init_drop
• <[MaybeUninit<T>]>::assume_init_ref
• <[MaybeUninit<T>]>::assume_init_mut
• <[MaybeUninit<T>]>::write_copy_of_slice
• <[MaybeUninit<T>]>::write_clone_of_slice
• String::into_raw_parts
• Vec::into_raw_parts
• <iN>::unchecked_neg
• <iN>::unchecked_shl
• <iN>::unchecked_shr
• <uN>::unchecked_shl
• <uN>::unchecked_shr
• <[T]>::as_array
• <[T]>::as_mut_array
• <*const [T]>::as_array
• <*mut [T]>::as_mut_array
• VecDeque::pop_front_if
• VecDeque::pop_back_if
• Duration::from_nanos_u128
• char::MAX_LEN_UTF8
• char::MAX_LEN_UTF16
• std::fmt::from_fn
• std::fmt::FromFn

Cargo

• Enable CARGO_CFG_DEBUG_ASSERTIONS in build scripts based on profile
• In cargo tree, support long forms for --format variables
• Add --workspace to cargo clean

Rustdoc

• Remove #![doc(document_private_items)]
• Include attribute and derive macros in search filters for "macros"
• Include extern crates in search filters for import
• Validate usage of crate-level doc attributes. This means if any of html_favicon_url, html_logo_url, html_playground_url, issue_tracker_base_url, or html_no_source either has a missing value, an unexpected value, or a value of the wrong type, rustdoc will emit the deny-by-default lint rustdoc::invalid_doc_attributes.

Compatibility Notes

• Introduce pin_v2 into the builtin attributes namespace
• Update bundled musl to 1.2.5
• On Emscripten, the unwinding ABI used when compiling with panic=unwind was changed from the JS exception handling ABI to the wasm exception handling ABI. If linking C/C++ object files with Rust objects, -fwasm-exceptions must be passed to the linker now. On nightly Rust, it is possible to get the old behavior with -Zwasm-emscripten-eh=false -Zbuild-std, but it will be removed in a future release.
• The #[test] attribute, used to define tests, was previously ignored in various places where it had no meaning (e.g on trait methods or types). Putting the #[test] attribute in these places is no longer ignored, and will now result in an error; this may also result in errors when generating rustdoc. Error when test attribute is applied to structs
• Cargo now sets the CARGO_CFG_DEBUG_ASSERTIONS environment variable in more situations. This will cause crates depending on static-init versions 1.0.1 to 1.0.3 to fail compilation with "failed to resolve: use of unresolved module or unlinked crate parking_lot". See the linked issue for details.
• User written types in the offset_of! macro are now checked to be well formed.
• cargo publish no longer emits .crate files as a final artifact for user access when the build.build-dir config is unset
• Upgrade the deref_nullptr lint from warn-by-default to deny-by-default
• Add future-incompatibility warning for ... function parameters without a pattern outside of extern blocks
• Introduce future-compatibility warning for repr(C) enums whose discriminant values do not fit into a c_int or c_uint
• Introduce future-compatibility warning against ignoring repr(C) types as part of repr(transparent)

astral-sh/uv (uv)

v0.9.27

Compare Source

Released on 2026-01-26.

Python

• Upgrade Pyodide to 0.29.2 (#​17652)
• Upgrade to GraalPy 25.0.2 (#​17634)

Enhancements

• Add -t shortform for --target to uv pip subcommands (#​17501)
• Add support for ROCm 7.0 and 7.1 accelerator backends (#​17681)
• Further improve free-threading ABI incompatibility errors (#​17491)
• Implement uv pip freeze --exclude flag (#​17045)
• Improve warnings for --system and --no-system in uv venv (#​17647)
• Make uv pip compile attempt to download a specified --python-version if it can. (#​17249)
• Support Trusted Publishing with pyx (#​17438)
• Fix JSON schema for exclude-newer-package (#​17665)

Preview features

• Better detection for conflicting packages (#​17623)
• Upgrade based on outdated build versions in uv python upgrade (#​17653)

Bug fixes

• Change chocolatey system test to ensure uv uses the right python (#​17533)
• Fix infinite loop when SSL_CERT_FILE is a directory (#​17503)

Documentation

• Add cargo-xwin to the CONTRIBUTING guide (#​17507)
• Fix typo in the documentation of UV_PUBLISH_INDEX (#​17672)
• Move MSRV to platform support section (#​17534)
• Update the testing instructions in the CONTRIBUTING guide (#​17528)
• Use --locked to install cargo-xwin in guide (#​17530)
• Warn about PyPy being unmaintained (#​17643)
• docs: Correct gitlab-ci.yml to .gitlab-ci.yml (#​17682)

Other changes

• Update MSRV to 1.91 (#​17677)

---

Configuration

📅 Schedule: Branch creation - Between 01:00 AM and 05:59 AM, only on Tuesday ( * 1-5 * * 2 ) in timezone Etc/UTC, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.53%. Comparing base (8ae83a7) to head (57454a3).
⚠️ Report is 2 commits behind head on 16/edge.

Additional details and impacted files

@@           Coverage Diff            @@
##           16/edge    #1399   +/-   ##
========================================
  Coverage    70.53%   70.53%           
========================================
  Files           16       16           
  Lines         4297     4297           
  Branches       691      691           
========================================
  Hits          3031     3031           
  Misses        1055     1055           
  Partials       211      211           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.