update rust

[mcandre]

https://blog.rust-lang.org/2025/03/18/Rust-1.85.1.html

• various bugfixes

https://github.com/rust-lang/rust/releases/tag/1.85.0

• lifetime logic accuracy improvements
• better log behavior when multiple threads crash
• various linter refinements and stablized API's

[mcandre]

relates to #507