March 2026 monthly summary for FuelLabs/fuel-core focused on CI/CD modernization and reliability improvements. Delivered a comprehensive overhaul of the CI/CD pipeline, enabling faster, more reliable releases and improved developer experience while reducing maintenance overhead. Overview of scope: - Repository: FuelLabs/fuel-core - Primary focus: CI/CD pipeline modernization and tooling improvements with a strong emphasis on performance, security, and cross-platform support. Key outcomes: - Reduced build and test times via modernized runners, caching, and pre-built tooling. - Improved cross-architecture support and artifact reliability for arm64/x64 builds. - Streamlined multi-platform Docker workflows for faster, more reliable images. Key achievements for the month: 1) CI/CD Pipeline Modernization: Migrated CI/CD workflows from BuildJet to WarpBuild runners, upgraded GitHub Actions to latest versions, and adopted pre-built binaries for cargo-nextest and cargo-audit. 2) Performance and reliability improvements: Implemented Swatinem/rust-cache@v2 and cache-on-failure to accelerate and stabilize builds. 3) Tooling and security upgrades: Replaced non-optimal tooling with pre-built binaries (taiki-e/install-action) and modernized steps to improve security checks and overall workflow efficiency. 4) Docker workflow refactor and multi-platform support: Consolidated per-arch builds into single multi-platform workflows, added profiling and concurrency controls, and streamlined image provisioning with Warpbuilds/build-push-action@v6. 5) ARM cross-compilation fix: Corrected arm64 release build path by using cross-compilation on x64 runners to ensure reliable ARM artifacts. Impact: - Faster and more reliable release cycles for fuel-core, with less maintenance burden on the CI system. - Improved cross-arch support and artifact reliability, reducing manual debug cycles for ARM builds. - Enhanced security posture and build integrity through upgraded actions and pre-built tooling. Technologies/skills demonstrated: - CI/CD modernization and workflow engineering (WarpBuild, GitHub Actions v4–v6, caching strategies) - Cross-platform and multi-arch build practices (cross, multi-platform Docker builds) - Tooling modernization and automation (taiki-e/install-action, cargo-audit, cargo-nextest) - Performance optimizations and reliability engineering (cache-on-failure, allocator/build caching, profiling-related workflows)

April 2025 monthly summary for FuelLabs/sway: Delivered a CI infrastructure upgrade for CodSpeed benchmarks by migrating from Ubuntu runners to BuildJet runners and updating the benchmark workflow. This change unlocked greater compute resources, reduced queue times, and improved benchmarking reliability, providing faster, more trustworthy performance signals to guide development.