Rust 1.46.0
You can use this tarball for the next major release of Rust (1.47.0), if a newer Rust 1.46 hasn't been released.
To use them, do the following.
$ mkdir -p /path/to/rust-1.47.0/build/cache/2020-08-27/
$ cp *.tar.xz /path/to/rust-1.47.0/build/cache/2020-08-27/