Updating crates.io index Updating git repository `https://github.com/not-fl3/rust-stunclient` error: failed to run `rustc` to learn about target-specific information Caused by: process didn't exit successfully: `rustc - --crate-name ___ --print=file-names --target riscv64-unknown-linux-gnu --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit status: 1) --- stderr error: Error loading target specification: Could not find specification for target "riscv64-unknown-linux-gnu". Run `rustc --print target-list` for a list of built-in targets ==> ERROR: A failure occurred in prepare().  Aborting...