to run this shell in my macbook pro(10.10.1),
$ curl -s https://static.rust-lang.org/rustup.sh | sudo sh
… …
nstall: CFG_DESTDIR :=
install: CFG_PREFIX := /usr/local
install: CFG_LIBDIR := /usr/local/lib
install: CFG_MANDIR := /usr/local/share/man
install:
install: validating /tmp/rustup-tmp-install.biZem3k5/rust-nightly-x86_64-apple-darwin/install.sh args
install:
install: verifying platform can run binaries
install: verifying destination is writable
install: verifying destination is not the same as source
mkdir: /usr/local/lib/rustlib: Input/output error
install: error: failed to create rustlib
rustup: error: failed to install Rust