Sam focused on strengthening the build infrastructure for the opentensor/subtensor repository by upgrading its Rust toolchain from version 1.85.0 to 1.86.0. This work involved updating the rust-toolchain.toml configuration and validating build stability across continuous integration pipelines, ensuring compatibility with the latest Rust ecosystem changes. Sam documented the migration process and rationale, supporting future maintenance and onboarding efforts. By aligning the project’s tooling with current standards, Sam established a solid foundation for upcoming feature development. The work demonstrated proficiency in Rust toolchain management and configuration using TOML, with an emphasis on long-term maintainability rather than immediate feature delivery.