Fix build warnings

[UnArbosFour]

Motivation

Rust builds currently report warnings in the vendored Frontier and w3f-bls sources. This PR removes those warnings without changing runtime behavior.

Changes

• Add explicit anonymous lifetimes to borrowed Frontier RPC and precompile return types.
• Remove an unused w3f-bls context constant.
• Avoid an unnecessary clone of a copyable w3f-bls public-key value.

Files of interest:

• vendor/frontier/client/rpc/src/eth/pending.rs
• vendor/frontier/precompiles/src/evm/handle.rs
• vendor/frontier/precompiles/src/testing/execution.rs
• vendor/w3f-bls/src/double_pop.rs
• vendor/w3f-bls/src/verifiers.rs

Behavioral impact

None expected. These changes only make inferred lifetimes explicit and remove unused or redundant operations.

Migration and spec version

No storage migration is required, and no runtime spec-version bump is needed.

Testing

The changes were reviewed statically as warning-only, behavior-preserving cleanup.

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Project	Deployment	Actions	Updated (UTC)
subtensor	Ready	Preview, Comment	Jul 15, 2026 8:59am

[github-actions]

🛡️ AI Review — Skeptic (security review)

VERDICT: SAFE

VERY HIGH scrutiny due to a <30-day-old account with one public repo; mitigated by repository write permission, matching author/committer, and no known Gittensor association. Branch targets main.

The 13-line vendor-only diff is mechanical: it makes elided lifetimes explicit, removes an unused constant, and removes a redundant clone from a copyable public-key value. No dependencies, runtime behavior, security configuration, or trusted AI-review files are changed.

Findings

No findings.

Conclusion

No malicious behavior or security vulnerability was found in the static review.

---

🔍 AI Review — Auditor (domain review)

VERDICT: 👍

UNKNOWN gittensor association; newer contributor with repository write access and one prior merged PR, so the small vendored-code cleanup received strict static scrutiny.

PR body was empty/trivial; the Auditor has auto-filled it. Please review.

This is a minimal warning cleanup across vendored Frontier and w3f-bls code. The explicit anonymous lifetimes preserve existing borrowing behavior, the unused constant removal is inert, and replacing clone() on the copyable public-key value does not alter verification semantics. No runtime code, storage, weights, dependencies, or migrations change; no spec-version bump is required. No duplicate or overlapping PR was identified.

Findings

No findings.

Conclusion

The changes are narrowly scoped, behavior-preserving warning fixes with no substantive correctness or runtime-safety concerns.

[github-actions]

🔄 AI review updated — Skeptic: SAFE Auditor: 👍