Can't install nightly-2018-05-23

[nox]

$ rustup -v install nightly-2018-05-23
verbose: read metadata version: '12'
verbose: installing toolchain 'nightly-2018-05-23-x86_64-apple-darwin'
verbose: toolchain directory: '/Users/nox/.rustup/toolchains/nightly-2018-05-23-x86_64-apple-darwin'
info: syncing channel updates for 'nightly-2018-05-23-x86_64-apple-darwin'
verbose: creating temp root: /Users/nox/.rustup/tmp
verbose: creating temp file: /Users/nox/.rustup/tmp/3qt0p5tat0zjvb_r_file
verbose: downloading file from: 'https://static.rust-lang.org/dist/2018-05-23/channel-rust-nightly.toml.sha256'
verbose: downloading with curl
verbose: deleted temp file: /Users/nox/.rustup/tmp/3qt0p5tat0zjvb_r_file
verbose: no update hash at: '/Users/nox/.rustup/update-hashes/nightly-2018-05-23-x86_64-apple-darwin'
verbose: creating temp file: /Users/nox/.rustup/tmp/dplg2yvi6rz6ws9y_file.toml
verbose: downloading file from: 'https://static.rust-lang.org/dist/2018-05-23/channel-rust-nightly.toml'
verbose: downloading with curl
verbose: checksum passed
verbose: deleted temp file: /Users/nox/.rustup/tmp/dplg2yvi6rz6ws9y_file.toml
info: latest update on 2018-05-23, rust version 1.28.0-nightly (71e87be38 2018-05-22)
info: downloading component 'rustc'
verbose: downloading file from: 'https://static.rust-lang.org/dist/2018-05-23/rustc-nightly-x86_64-apple-darwin.tar.xz'
verbose: downloading with curl
verbose: resuming partial download
 56.9 MiB /  56.9 MiB (100 %) 960.3 KiB/s ETA:   0 s
verbose: checksum passed
verbose: removing toolchain directory: '/Users/nox/.rustup/toolchains/nightly-2018-05-23-x86_64-apple-darwin'
error: component download failed for rustc-x86_64-apple-darwin
info: caused by: No such file or directory (os error 2)

[nox]

Killing both ~/.rustup and ~/.cargo/bin somehow solved the issue. Shrug.