1.44.1
You can use this tarball for the next major release of Rust (1.45.0), if Rust 1.44.2 isn't released.
To use them, do the following.
$ mkdir -p /path/to/rust-1.45.0/build/cache/2020-06-18/
$ cp *.tar.xz /path/to/rust-1.45.0/build/cache/2020-06-18/