Merge #1564: ci: add cron-update-rust.yml

b92f8c9 ci: add cron-update-rust.yml (valued mammal)

Pull request description:

  This adds a cronjob to watch for updates to rust stable once a month. If the latest version changed, then a pull request is opened to see if clippy passes CI using the new toolchain.

  ### Notes to the reviewers

  Let me know what you think @notmandatory

  fixes #1431

  ### Changelog notice

  ### Checklists

  #### TODO

  * [ ] Setup access token for [create-pull-request](https://github.com/marketplace/actions/create-pull-request)

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  oleonardolima:
    tACK b92f8c9

Tree-SHA512: e251fb8d0456c30a244f4611131baea1afc4f8323a3bdc8d9536d276a8b4bb2c0269beba6b04b72ab2ea96897e421a16c3e8e6065a755d62ff98bfe13d0b02bd

.github/workflows/cont_integration.yml

@@ -4,6 +4,17 @@ name: CI
 
 jobs:
 
+ prepare:
+ runs-on: ubuntu-latest
+ outputs:
+ rust_version: ${{ steps.read_toolchain.outputs.rust_version }}
+ steps:
+ - name: "Checkout repo"
+ uses: actions/checkout@v4
+ - name: "Read rust version"
+ id: read_toolchain
+ run: echo "rust_version=$(cat rust-version)" >> $GITHUB_OUTPUT
+
  build-test:
  name: Build and test
  runs-on: ubuntu-latest
@@ -116,12 +127,13 @@ jobs:
  run: cargo fmt --all -- --config format_code_in_doc_comments=true --check
 
  clippy_check:
+ needs: prepare
  runs-on: ubuntu-latest
  steps:
  - uses: actions/checkout@v1
  - uses: actions-rs/toolchain@v1
  with:
- toolchain: 1.78.0
+ toolchain: ${{ needs.prepare.outputs.rust_version }}
  components: clippy
  override: true
  - name: Rust Cache

.github/workflows/cron-update-rust.yml

@@ -0,0 +1,42 @@
+name: Update rust version
+on:
+ schedule:
+ - cron: "0 0 15 * *" # At 00:00 on day-of-month 15.
+ workflow_dispatch: # allows manual triggering
+jobs:
+ format:
+ name: Update rustc
+ runs-on: ubuntu-latest
+ steps:
+ - uses: actions/checkout@v4
+ - uses: dtolnay/rust-toolchain@stable
+ - name: Update rust-version to use latest stable
+ run: |
+ set -x
+ # Extract the version from whatever version of the compiler dtolnay/rust-toolchain gives us.
+ RUST_VERSION=$(rustc --verbose --version | sed -ne 's/^release: //p')
+ # Update the version in the reference file.
+ echo "${RUST_VERSION}" > rust-version
+ echo "rust_version=${RUST_VERSION}" >> $GITHUB_ENV
+ # In case of no new version don't make an empty PR.
+ if ! git diff --exit-code > /dev/null; then
+ echo "Updated rustc. Opening PR."
+ echo "changes_made=true" >> $GITHUB_ENV
+ else
+ echo "Attempted to update rustc but the latest stable date did not change. Not opening any PR."
+ echo "changes_made=false" >> $GITHUB_ENV
+ fi
+ - name: Create Pull Request
+ if: env.changes_made == 'true'
+ uses: peter-evans/create-pull-request@v6
+ with:
+ token: ${{ secrets.GITHUB_TOKEN }}
+ author: Update Rustc Bot <bot@example.com>
+ committer: Update Rustc Bot <bot@example.com>
+ branch: create-pull-request/update-rust-version
+ title: |
+ ci: automated update to rustc ${{ env.rust_version }}
+ commit-message: |
+ ci: automated update to rustc ${{ env.rust_version }}
+ body: |
+ Automated update to Github CI workflow `cont_integration.yml` by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action

rust-version

@@ -0,0 +1 @@
+1.79.0