Highlights from #666:

• Rust’s first Maintainers in Residence are announced, and the next-generation trait solver is now available on nightly.
• Supply-chain security gets attention with the arrayref attack and a broader critique of Rust’s current defenses.
• Function overloading is seeking experimentation; --remap-path-scope and Cargo -Zembed-metadata remain under testing.
• Performance reports include a 17% interpreter speedup from replacing an enum with a 64-bit word, plus three seconds shaved from compilation through metadata analysis.
• Other useful deep dives cover AI-assisted C/C++ rewrites, retained state in e-paper drivers, an async MCP server for rust-analyzer, and bpftrace validation of SQLx’s statement cache.
• Crate of the week: swift-topomap, a microarchitectural observability tool.

Full issue