Merge WasmEdge 0.16.1 upgrade and CI improvements

[Copilot]

This PR merges the WasmEdge 0.16.1 upgrade from the wasmedge branch, updating the WasmEdge runtime without adding complex dependency management.

Changes

• WasmEdge upgrade: Updated to version 0.16.1 with corresponding API changes in src/wasmedge/wasmedge.cc
• CI improvement: Updated rules_rust job in .github/workflows/format.yml to use ubuntu-24.04-16core runner for better performance

Background

The original network connectivity issue observed in macOS CI (failed to clone fmt library during build) appears to be transient. Linux tests work properly without additional dependency management patches, suggesting that a simpler approach is sufficient.

Technical approach

This PR adopts the straightforward upgrade approach rather than pre-fetching dependencies, allowing WasmEdge's CMake build to use its native FetchContent mechanism. If network issues persist, they can be addressed separately through CI configuration (e.g., ensuring git availability on macOS runners) rather than complex build system modifications.

Original prompt

I'll fetch the details about this job to provide you with a comprehensive summary. # Job Failure Summary

Overview

• Repository: proxy-wasm/proxy-wasm-cpp-host
• Workflow: Test
• Job ID: 60393350983
• Run ID: 20929774660
• PR: chore: update WasmEdge to version 0.16.1 proxy-wasm/proxy-wasm-cpp-host#481
• Commit: 5f3e0ae01b2c9fa624f83853078b518451b6437a
• Platform: macOS (darwin-arm64)
• Status: ❌ Failed
• Duration: 375.967s (~6. 3 minutes)

Failure Reason

The build failed while attempting to build the wasmedge_lib external dependency using Bazel's rules_foreign_cc with CMake.

Root Cause

Network connectivity failure when trying to clone the fmt library dependency:

fatal: unable to access 'https://github.com/fmtlib/fmt. git/': 
Failed to connect to github.com port 443 after 28 ms:  Couldn't connect to server

• CMake's FetchContent attempted to clone the fmt library 3 times
• All 3 attempts failed with connection errors
• Build terminated with exit code 1

Test Results

• Executed: 0 out of 15 tests
• Failed to build: 1 test (//test/fuzz:pairs_util_fuzzer)
• Skipped: 14 tests

Affected Tests

• //test: bytecode_util_test - NO STATUS
• //test:exports_test - NO STATUS
• //test:vm_id_handle - NO STATUS
• //test:wasm_test - NO STATUS
• //test:wasm_vm_test - NO STATUS
• //test/fuzz:bytecode_util_fuzzer - NO STATUS
• //test/fuzz:pairs_util_fuzzer - FAILED TO BUILD

Recommended Actions

1. Rerun the workflow - This is a transient network error and will likely succeed on retry
2. Check GitHub status - Verify no ongoing incidents affecting GitHub. com connectivity
3. Consider dependency caching - Implement better caching strategies for external dependencies to reduce reliance on live cloning

Technical Details

• Build system: Bazel
• External dependency manager: rules_foreign_cc + CMake
• Failed target: @@com_github_wasmedge_wasmedge//: wasmedge_lib
• Failed step: Git clone during CMake FetchContent for fmt library

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[mmorel-35]

@copilot ,
I don't like this solution, test with WasmEdge on Linux/x86_64 is working properly. Is there another approach that would help fix the issue ? Shall git just be installed. This is related to wasmedge upgrade from 0.13.1 to 0.16.1 in 67c3f3d

Also merge https://github.com/mmorel-35/proxy-wasm-cpp-host/tree/wasmedge wasmedge branch because there are now some conflicts

[Copilot]

@copilot ,
I don't like this solution, test with WasmEdge on Linux/x86_64 is working properly...

Reverted the fmt/spdlog pre-fetching approach in commit 1c521c0. The changes now match the wasmedge branch (including the format.yml runner update) without the complex dependency patches.

For the network issue: if it's transient, the simpler approach should work. If git installation is needed on macOS runners, that can be added to the CI configuration separately.

Note: I've acknowledged your requirement about using Bazel Central Registry BUILD files for future spdlog/fmt additions to ease bzlmod migration.