Worked on the casey/bdk repository to improve the reliability of documentation builds by addressing a recurring issue with network-dependent downloads during docs.rs generation. Focused on the build system and dependency management in Rust, the solution involved disabling the default 'download' feature for the bdk_testenv crate specifically in documentation builds. This targeted change prevented automatic downloads of bitcoind and electrsd binaries, reducing CI flakiness and speeding up build times without impacting runtime behavior. The approach demonstrated careful problem isolation and precise configuration management, resulting in more stable documentation generation across environments while maintaining the integrity of the existing build process.