random532

I had the same problem. Somehow localbase defaults to "/" instead of "/usr/local". Use this command instead: make install LOCALBASE=/usr/local

The error message has one 'help' and one 'note' statement worth trying.

x86_64-kernel-freebsd is not in the list of build in targets, see: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_target/spec/index.html#modules