Rust 1.45.2

You can use this tarball for the next major release of Rust (1.46.0).

To use them, do the following.

$ mkdir -p /path/to/rust-1.46.0/build/cache/2020-08-03/
$ cp *.tar.xz /path/to/rust-1.46.0/build/cache/2020-08-03/