The Rust Release Process
Here’s how Rust is currently released:
Promote beta to stable (T-3 days, Monday)
Promote beta to stable. Temporarily turn off GitHub branch protection for the
stable branch in rust-lang/rust repo. In your local Rust repo:
$ git fetch rust-lang $ git push rust-lang rust-lang/beta:stable -f
Re-enable branch protection for the
stable branch. Send a PR to rust-lang/rust
on the stable branch making the following changes:
Once the PR is sent, r+ it and give it a high
The stable build will not deploy automatically to prod. The rust-central-station repository is configured to upload to dev every hour if it detects a change. You should be able to browse changes in dev.
As soon as this build is done post a message to irlo asking for testing. The index is https://dev-static-rust-lang-org.s3.amazonaws.com/dist/2015-09-17/index.html and our URL is then https://dev-static.rust-lang.org/dist/2015-09-17/index.html.
Test rustup with
RUSTUP_DIST_SERVER=https://dev-static.rust-lang.org rustup update stable
If something goes wrong, and we rebuild stable artifacts, you’ll need to invalidate the dev-static bucket for RCS to re-release it.
- Download https://dev-static.rust-lang/dist/channel-rust-1.35.0.toml The version number must be less than the current release, but otherwise doesn’t matter.
- Rename the file locally to channel-rust-stable.toml
- Upload the file to the dev-static bucket into the dist folder, replacing channel-rust-stable.toml.
- Go to CloudFront in AWS, to the dev-static bucket, and issue an invalidation for “/dist/channel-rust-stable.toml”. This is necessary until https://github.com/rust-lang/rust-central-station/issues/49 is fixed.
- (optional) login to central station, and run the following. This starts the dev-static promotion immediately, vs. waiting till the next hour.
docker exec -d -it rcs bash -c 'promote-release /tmp/stable stable /data/secrets-dev.toml 2>&1 | logger --tag release-stable'
Promote master to beta (T-2 days, Tuesday)
Create a new branch on
rust-lang/cargo for the new beta. Here,
the remote for https://github.com/rust-lang/rust.git. Replace
YY with the
minor version of master. First determine the branch point for cargo in
rust-lang/rust, and then create a new branch:
$ cd rust $ git fetch rust-lang $ CARGO_SHA=`git rev-parse rust-lang/master:src/tools/cargo` $ cd src/tools/cargo $ git branch rust-1.YY.0 $CARGO_SHA $ git push origin rust-1.YY.0
You’ll need to temporarily disable branch protection on GitHub to push the new branch.
In theory one day we’ll do the same for rust-lang/rls, but for now we haven’t done this yet.
Temporarily disable banch protection on GitHub for the
beta branch of the Rust
repo. Promote rust-lang/rust’s master branch to beta as with yesterday:
$ git fetch rust-lang $ git push rust-lang rust-lang/master:beta -f
Re-enable branch protection on GitHub. Send a PR to the freshly created beta branch of rust-lang/rust which:
- Update src/stage0.txt
dateto “YYYY-MM-DD” where the date is the archive date the stable build was uploaded
rustcto “X.Y.Z” where that’s the version of rustc you just build
cargoto “A.B.C” where it’s Cargo’s version. That’s typically “0.(Y+1).0” wrt the rustc version.
- Update src/ci/run.sh to pass “–release-channel=beta”.
Note that you probably don’t want to update the RLS if it’s working, but if it’s not working beta won’t land and it’ll need to get updated. After this PR merges (through @bors) the beta should be automatically released.
Master bootstrap update (T-1 day, Wednesday)
Write a new blog post, update rust-www, and update rust-forge. Submit PRs for tomorrow.
Send a PR to the master branch to:
- modify src/stage0.txt to bootstrap from yesterday’s beta
- modify src/bootstrap/channel.rs with the new version number
Release day (Thursday)
Decide on a time to do the release, T.
T-30m - This is on rust-central-station:
docker exec -d -it rcs bash -c 'promote-release /tmp/stable stable /data/secrets.toml 2>&1 | logger --tag release-stable-realz'
That’ll, in the background, schedule the
promote-releasebinary to run on the production secrets (not the dev secrets). That’ll sign everything, upload it, update the html index pages, and invalidate the CDN. Note that this takes about 30 minutes right now. Logs are in
T-10m - Locally, tag the new release and upload it. Use “x.y.z release” as the commit message.
$ git tag -u FA1BE5FE 1.3.0 $COMMIT_SHA $ git push rust-lang 1.3.0
After this Update thanks.rust-lang.org by triggering a build on Travis.
T-5m - Merge blog post.
T - Tweet and post everything!
T+5m - Tag Cargo the same way as rust-lang/rust and then run
cargo publishfor the tag you just created.
Also tag RLS the same way and then run
cargo publishfor the tag you just created.
T+1hr Send a PR to the beta branch to comment out
dev: 1again and update the date to download from (modifying
Bask in your success.
Update dependencies (T+1 day, Friday)
In the repo:
$ cd src $ cargo update
The very ambitious can use https://crates.io/crates/cargo-outdated and update through breaking changes.