Rust's next-gen trait solver enters final comment period ahead of 1.101.0

Rust's next-generation trait solver has entered its Final Comment Period, a 10-day window before stabilization. If no regressions surface, it will ship in stable release 1.101.0, scheduled for December 24. The solver prunes invalid paths earlier, cutting backtracking in trait resolution.

• FCP runs 10 days before stabilization in Rust 1.101.0
• Release 1.101.0 is scheduled for December 24
• Solver prunes invalid paths earlier, reducing backtracking
• Risks: regressions in associated and higher-kinded types