There are a few things you can do to resolve the rust keep crashing problem if you're facing it. These are the things you need to do first.
1. As an administrator, run Steam.
2. Close all running applications.
3. Clear the prefetch and temp folders.
4. Install the Graphics Drivers.
5. Opt for the Steam Beta.
6. Power Off and Then On
7. Use verify that files are in good standing
8. Increase your virtual memory
9. Reinstall the Rust
You may also read this blog for more information - http://www.mayiassist.viamagus.com/blog/how-to-stop-rust-from-crashing-in-windows-10-.html
1. As an administrator, run Steam.
2. Close all running applications.
3. Clear the prefetch and temp folders.
4. Install the Graphics Drivers.
5. Opt for the Steam Beta.
6. Power Off and Then On
7. Use verify that files are in good standing
8. Increase your virtual memory
9. Reinstall the Rust
You may also read this blog for more information - http://www.mayiassist.viamagus.com/blog/how-to-stop-rust-from-crashing-in-windows-10-.html