Rust 1.98.0 pre-release testing

The 1.98.0 pre-release is ready for testing. The release is scheduled for August 20. Release notes can be found here. You can try it out locally by running: RUSTUP_DIST_SERVER=https://dev-static.rust-lang.org rustup update stable The index is https://dev-static.rust-lang.org/dist/2026-08-18/index.html. General feedback about our pre-release process is welcome on this GitHub issue.