When updating nightly, sometimes it fails, check here for last good build
Then install it with
rustup toolchain install
set default with
rustup default nightly-2019-05-12-x86_64-apple-darwin
check with
rustup toolchain list
When updating nightly, sometimes it fails, check here for last good build
Then install it with
rustup toolchain install
set default with
rustup default nightly-2019-05-12-x86_64-apple-darwin
check with
rustup toolchain list