Make a new point release

[Aaron1011]

It would be nice to have a release that includes #298 and #297, which fix issues in libstd and miri respectively.

[Amanieu]

A new version was just released 1 hour ago. We're just missing an update to Cargo.lock in rust-lang/rust.

[Aaron1011]

I checked this repository earlier today, and didn't check again before making this issue 😆