Can't install nightly-2019-01-10

[pietroalbini]

Installing rust nightly with rustup returns this error:

info: syncing channel updates for 'nightly-x86_64-unknown-linux-gnu'
info: latest update on 2019-01-10, rust version 1.33.0-nightly (6ecad3383 2019-01-09)
info: downloading component 'rustc'
error: failed to parse url: nightly/2019-01-10/rustc-nightly-x86_64-unknown-linux-gnu.tar.xz
info: caused by: relative URL without a base

We're aware of this and a fix is pending in #57484. Sorry for the trouble!

[dwijnand]

You can mitigate this by using rustup install nightly-2019-01-09 instead of today's nightly, and then use +nightly-2019-01-09 in place of +nightly.