You can use this tarball for the next major release of Rust (1.51.0), if a newer Rust 1.50 hasn't been released.
To use them, do the following.
$ mkdir -p /path/to/rust-1.50.0/build/cache/2021-02-11/
$ cp *.tar.xz /path/to/rust-1.50.0/build/cache/2021-02-11/
You can use this tarball for the next major release of Rust (1.50.0), if a newer Rust 1.49 hasn't been released.
To use them, do the following.
$ mkdir -p /path/to/rust-1.50.0/build/cache/2020-12-31/
$ cp *.tar.xz /path/to/rust-1.50.0/build/cache/2020-12-31/