chore: bump rust toolchain to 1.95.0

[hanabi1224]

Summary of changes

Changes introduced in this pull request:

• bump rust toolchain: https://releases.rs/docs/1.95.0/
• fix clippy warnings

warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
   --> src/cli/subcommands/net_cmd.rs:79:34
    |
 79 | ...                   .zip(agents.into_iter()),
    |                            ^^^^^^^^^^^^^^^^^^
    |
note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`


warning: iterating on a map's values
   --> src/db/memory.rs:117:20
    |
117 |           let cids = self
    |  ____________________^
118 | |             .eth_mappings_db
119 | |             .read()
120 | |             .iter()
121 | |             .filter_map(|(_, value)| fvm_ipld_encoding::from_slice::<(Cid, u64)>(value).ok())
    | |_____________________________________________________________________________________________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.95.0/index.html#iter_kv_map
    = note: `#[warn(clippy::iter_kv_map)]` on by default
	
	
warning: this `if` can be collapsed into the outer `match`
   --> src/db/gc/snapshot.rs:282:17
    |
282 | /                 if !map.is_empty() {
283 | |                     *self.memory_db.write() = Some(map);
284 | |                     *self.memory_db_head_key.write() = current_chain_head;
285 | |                 }
    | |_________________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.95.0/index.html#collapsible_match
    = note: `#[warn(clippy::collapsible_match)]` on by default
	
	
warning: this `if` can be collapsed into the outer `match`
   --> src/libp2p/discovery.rs:369:17
    |
369 | /                 if e.other_established == 0 {
370 | |                     self.n_node_connected += 1;
371 | |                     self.peers.insert(e.peer_id);
372 | |                     self.pending_events
373 | |                         .push_back(DiscoveryEvent::PeerConnected(e.peer_id));
374 | |                 }
    | |_________________^
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.95.0/index.html#collapsible_match
	
warning: casting to the same type is unnecessary (`usize` -> `usize`)
   --> src/eth/transaction.rs:639:41
    |
639 |         let mut eip_155_sig = vec![0u8; eip_155_sig_len as usize - v.len()];
    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `eip_155_sig_len`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.95.0/index.html#unnecessary_cast
    = note: `#[warn(clippy::unnecessary_cast)]` on by default
	
	
warning: manual checked division
  --> src/tool/subcommands/net_cmd.rs:48:20
   |
48 |                 if n_success > 0 {
   |                    ^^^^^^^^^^^^^ check performed here
49 |                     let avg_ms = total_duration.as_millis() / n_success;
   |                                  -------------------------------------- division performed here
   |
   = help: consider using `checked_div`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.95.0/index.html#manual_checked_ops
   = note: `#[warn(clippy::manual_checked_ops)]` on by default
   
   
warning: unneeded unit return type
   --> src/lotus_json/ipld.rs:279:25
    |
279 | fn quickcheck(val: Ipld) -> () {
    |                         ^^^^^^ help: remove the `-> ()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.95.0/index.html#unused_unit
    = note: `#[warn(clippy::unused_unit)]` on by default

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.

Outside contributions

• I have read and agree to the CONTRIBUTING document.
• I have read and agree to the AI Policy document. I understand that failure to comply with the guidelines will lead to rejection of the pull request.

Summary by CodeRabbit

• Chores

  • Updated Rust toolchain to 1.95.0.
  • Migrated test harness usage to the newer attribute-based test macros.

• Refactor

  • Simplified iterator and consumption patterns and tightened control-flow with guard patterns.
  • Minor control-flow adjustments in async/result handling.

• Bug Fixes

  • Added overflow-safe arithmetic to prevent division/overflow edge cases in progress and latency reporting.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 27d26b18-705d-4673-b9de-bad60673dbfa

📥 Commits

Reviewing files that changed from the base of the PR and between 3149b2c and a432ad4.

📒 Files selected for processing (1)

• src/utils/net/download_file.rs

🚧 Files skipped from review as they are similar to previous changes (1)

• src/utils/net/download_file.rs

---

Walkthrough

Updated Rust toolchain to 1.95.0; migrated many tests from quickcheck! macro to #[quickcheck_macros::quickcheck]; and applied small iterator, pattern, and overflow-safety refinements across several modules.

Changes

Cohort / File(s)	Summary
Toolchain Update rust-toolchain.toml	Bumped Rust toolchain version from 1.94.0 to 1.95.0.
Quickcheck Macro Migration (tests) src/blocks/tipset.rs, src/cid_collections/hash_map.rs, src/cid_collections/mod.rs, src/cli/humantoken.rs, src/db/car/forest/index/hash.rs, src/db/car/forest/index/mod.rs, src/lotus_json/ipld.rs, src/lotus_json/mod.rs, src/lotus_json/opt.rs, src/lotus_json/raw_bytes.rs, src/lotus_json/vec.rs, src/rpc/methods/chain.rs	Replaced quickcheck::quickcheck! macro blocks with #[quickcheck_macros::quickcheck] attribute functions; removed explicit -> () return annotations and adjusted imports accordingly.
Iterator / Pattern Simplifications src/cli/subcommands/net_cmd.rs, src/db/memory.rs, src/state_manager/mod.rs, src/db/gc/snapshot.rs, src/libp2p/discovery.rs	Simplified iterator usage (e.g., use .values() or zip(receipts)), converted nested if to match/guard patterns, and tightened branching to avoid unnecessary moves.
Arithmetic Safety & Minor Fixes src/tool/subcommands/net_cmd.rs, src/utils/net/download_file.rs, src/eth/transaction.rs	Made divisions overflow-safe using checked_div/checked ops and removed a redundant cast; small test-only adjustment for signature padding length.
Other small refactors src/cli/subcommands/net_cmd.rs (other minor iterator simplification)	Minor iterator-expression simplification in peer-to-agent mapping.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

• chore: upgrade rust to 1.91.0 #6226: Also bumps rust-toolchain.toml (toolchain version update).
• chore: upgrade rust toolchain to 1.94.0 #6697: Related rust-toolchain version bump to a nearby release.
• chore: rust toolchain 1.93.0 #6470: Another rust-toolchain update affecting the same file.

Suggested reviewers

• akaladarshi
• LesnyRumcajs

🚥 Pre-merge checks | ✅ 3

✅ 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 'chore: bump rust toolchain to 1.95.0' directly matches the primary change in the PR: updating the Rust toolchain version in rust-toolchain.toml from 1.94.0 to 1.95.0, with all other changes being downstream Clippy warning fixes resulting from the upgrade.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch hm/rust-1.95

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch hm/rust-1.95

---

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@src/utils/net/download_file.rs`:
- Line 383: The percent calculation currently does multiplication then
checked_div which risks overflow; update the computation of percent (using the
downloaded and total_size variables where percent is assigned) to first use
checked_mul(100) and then checked_div(total_size), preserving the final
unwrap_or(0) fallback so division-by-zero and overflow are both handled safely
(e.g., downloaded.checked_mul(100).and_then(|v|
v.checked_div(total_size)).unwrap_or(0)); change the assignment where percent is
computed in download_file.rs accordingly.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: f5effd13-c8cc-43bb-b27d-a614ecb0a447

📥 Commits

Reviewing files that changed from the base of the PR and between 0790343 and 3149b2c.

📒 Files selected for processing (21)

• rust-toolchain.toml
• src/blocks/tipset.rs
• src/cid_collections/hash_map.rs
• src/cid_collections/mod.rs
• src/cli/humantoken.rs
• src/cli/subcommands/net_cmd.rs
• src/db/car/forest/index/hash.rs
• src/db/car/forest/index/mod.rs
• src/db/gc/snapshot.rs
• src/db/memory.rs
• src/eth/transaction.rs
• src/libp2p/discovery.rs
• src/lotus_json/ipld.rs
• src/lotus_json/mod.rs
• src/lotus_json/opt.rs
• src/lotus_json/raw_bytes.rs
• src/lotus_json/vec.rs
• src/rpc/methods/chain.rs
• src/state_manager/mod.rs
• src/tool/subcommands/net_cmd.rs
• src/utils/net/download_file.rs

[codecov]

Codecov Report

❌ Patch coverage is 82.81250% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.87%. Comparing base (0790343) to head (a432ad4).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/libp2p/discovery.rs	45.45%	6 Missing ⚠️
src/utils/net/download_file.rs	0.00%	4 Missing ⚠️
src/cid_collections/hash_map.rs	89.28%	3 Missing ⚠️
src/db/gc/snapshot.rs	0.00%	3 Missing ⚠️
src/lotus_json/ipld.rs	81.25%	2 Missing and 1 partial ⚠️
src/cli/subcommands/net_cmd.rs	0.00%	1 Missing ⚠️
src/db/car/forest/index/mod.rs	97.05%	1 Missing ⚠️
src/tool/subcommands/net_cmd.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
src/blocks/tipset.rs	84.80% <100.00%> (+0.08%)	⬆️
src/cid_collections/mod.rs	97.01% <100.00%> (+0.24%)	⬆️
src/cli/humantoken.rs	99.34% <100.00%> (+0.02%)	⬆️
src/db/car/forest/index/hash.rs	100.00% <100.00%> (ø)
src/db/memory.rs	88.81% <100.00%> (ø)
src/eth/transaction.rs	86.84% <100.00%> (-0.15%)	⬇️
src/lotus_json/mod.rs	75.00% <ø> (ø)
src/lotus_json/opt.rs	86.66% <100.00%> (+3.33%)	⬆️
src/lotus_json/raw_bytes.rs	100.00% <100.00%> (ø)
src/lotus_json/vec.rs	61.53% <100.00%> (+5.01%)	⬆️
... and 10 more

... and 7 files with indirect coverage changes

---

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