chore: ugprade rust-tool chain to 1.91.0

[hanabi1224]

Summary of changes

Changes introduced in this pull request:

• upgrade tool to 1.91.0
• cargo update

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code
  adheres to the team's
  documentation standards,
• I have added tests that prove my fix is effective or that my feature works
  (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes
  should be reflected in this document.

Summary by CodeRabbit

• Chores
  • Updated Rust toolchain version to 1.91.0.

[coderabbitai]

Walkthrough

Updates the Rust toolchain version from 1.89.0 to 1.91.0 in rust-toolchain.toml. All components and targets remain unchanged with no behavioral modifications.

Changes

Cohort / File(s)	Summary
Rust toolchain update rust-toolchain.toml	Version bump: 1.89.0 → 1.91.0

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Suggested labels

dependencies, rust

Suggested reviewers

• LesnyRumcajs
• sudo-shashank

Poem

🐰 A rabbit hops with glee,
The toolchain's fresh—1-9-1!
From ancient 89, we flee,
New Rust has just begun! 🦀

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title contains a typo ('ugprade' instead of 'upgrade') but clearly describes the main change: updating the Rust toolchain version. The title is specific and related to the primary modification in the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch hm/rust-1.91

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between f88cd42 and dbb38f5.

⛔ Files ignored due to path filters (1)

• Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (1)

• rust-toolchain.toml (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (6)

• GitHub Check: lint
• GitHub Check: codedov
• GitHub Check: E2E API Tests
• GitHub Check: deploy
• GitHub Check: E2E Claim Token API CORS Tests
• GitHub Check: E2E Browser Tests

🔇 Additional comments (2)

rust-toolchain.toml (2)

2-2: Cargo.lock was successfully updated in the commit—no action required.

Note: Be aware that libraries in /usr/local/lib may no longer be linked automatically in 1.91.0, which may require adjustments to build.rs if your project relies on this.

---

2-2: Build verification confirms Rust 1.91.0 compatibility—no blocking issues detected.

Analysis of the three breaking changes in Rust 1.91.0 shows your codebase is not affected:

• semicolon_in_expressions_from_macros (deny-by-default): The lotus_json_with_self macro generates clean trait implementations without problematic semicolons in expressions.
• Pattern bindings drop order: Pattern bindings in the codebase are simple tuple destructuring (let (var1, var2) = ...), not complex destructors sensitive to drop ordering.
• FFI ABI stabilization: No FFI code found using the affected ABIs (sysv64, win64, efiapi, aapcs).

To fully confirm, run cargo build && cargo test with the new toolchain to verify compilation and test suite success.

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 41.09%. Comparing base (f88cd42) to head (dbb38f5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #352   +/-   ##
=======================================
  Coverage   41.09%   41.09%           
=======================================
  Files          40       40           
  Lines        2667     2667           
=======================================
  Hits         1096     1096           
  Misses       1571     1571           

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