Rustup fails with 'error: invalid sha256' on OSX

[shadowmint]

rustup: CFG_CURL             := /usr/bin/curl (curl 7.37.1 (x86_64-apple-darwin14.0) libcurl/7.37.1 SecureTransport zlib/1.2.5)
rustup: CFG_TAR              := /usr/bin/tar (bsdtar 2.8.3 - libarchive 2.8.3)
rustup: CFG_FILE             := /usr/bin/file
rustup: CFG_SHA256SUM        :=
rustup: CFG_SHASUM           := /usr/bin/shasum (5.84)
rustup:
rustup: processing sh args
rustup:
rustup: CFG_PREFIX           :=
rustup: CFG_DATE             :=
rustup:
rustup: validating sh args
rustup:
rustup: host triple: x86_64-apple-darwin
rustup: Downloading https://static.rust-lang.org/dist/rust-nightly-x86_64-apple-darwin.tar.gz to /var/folders/vh/mky23skx2z11h8rwhyvkdxy40000gn/T/rustup-tmp-install.fSJoNFMQ/rust-nightly-x86_64-apple-darwin.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  105M  100  105M    0     0   546k      0  0:03:17  0:03:17 --:--:--  680k
rustup: Downloading https://static.rust-lang.org/dist/rust-nightly-x86_64-apple-darwin.tar.gz.sha256
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   106  100   106    0     0     71      0  0:00:01  0:00:01 --:--:--    71
rustup: Verifying hash
rustup: error: invalid sha256.
 329396d75ed016014dba0129d9abf0f98b656c5db7dec67cc9f63ea8b7a4edc8 https://static.rust-lang.org/dist/rust-nightly-x86_64-apple-darwin.tar.gz
 f4b90c037c2ef95850a6aaee6c32be0bf917449e9dc87c40cf47f11781d92853 /var/folders/vh/mky23skx2z11h8rwhyvkdxy40000gn/T/rustup-tmp-install.fSJoNFMQ/rust-nightly-x86_64-apple-darwin.tar.gz

Can't see anything obvious on http://buildbot.rust-lang.org/builders that's causing this.

[shadowmint]

uh... failed three times in a row, then suddenly worked. Maybe an upload was in progress or something?

...anyhow, seems to be working now, so I'll just close this I guess...