toolchain-upgrade.yml

# Copyright Kani Contributors
# SPDX-License-Identifier: Apache-2.0 OR MIT

name: Attempt toolchain update

on:
  schedule:
    - cron: "30 2 * * *" # Run this every day at 02:30 UTC
  workflow_dispatch:     # Allow manual dispatching for a custom branch / tag.

permissions:
  checks: write
  contents: write
  issues: write
  pull-requests: write

jobs:
  create-toolchain-pr:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout Kani
        uses: actions/checkout@v3

      - name: Setup Kani Dependencies
        uses: ./.github/actions/setup
        with:
          os: ubuntu-22.04

      - name: Update toolchain config
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          current_toolchain_date=$(grep ^channel rust-toolchain.toml | sed 's/.*nightly-\(.*\)"/\1/')
          echo "current_toolchain_date=$current_toolchain_date" >> $GITHUB_ENV
          current_toolchain_epoch=$(date --date $current_toolchain_date +%s)
          next_toolchain_date=$(date --date "@$(($current_toolchain_epoch + 86400))" +%Y-%m-%d)
          echo "next_toolchain_date=$next_toolchain_date" >> $GITHUB_ENV
          if gh issue list -S \
              "Toolchain upgrade to nightly-$next_toolchain_date failed" \
              --json number,title | grep title ; then
            echo "next_step=none" >> $GITHUB_ENV
          elif ! git ls-remote --exit-code origin toolchain-$next_toolchain_date ; then
            echo "next_step=create_pr" >> $GITHUB_ENV
            sed -i "/^channel/ s/$current_toolchain_date/$next_toolchain_date/" rust-toolchain.toml
            git diff
            git clone --filter=tree:0 https://github.com/rust-lang/rust rust.git
            cd rust.git
            current_toolchain_hash=$(curl https://static.rust-lang.org/dist/$current_toolchain_date/channel-rust-nightly-git-commit-hash.txt)
            echo "current_toolchain_hash=$current_toolchain_hash" >> $GITHUB_ENV
            next_toolchain_hash=$(curl https://static.rust-lang.org/dist/$next_toolchain_date/channel-rust-nightly-git-commit-hash.txt)
            echo "next_toolchain_hash=$next_toolchain_hash" >> $GITHUB_ENV
            EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
            echo "git_log<<$EOF" >> $GITHUB_ENV
            git log --oneline $current_toolchain_hash..$next_toolchain_hash | \
              sed 's#^#https://github.com/rust-lang/rust/commit/#' >> $GITHUB_ENV
            echo "$EOF" >> $GITHUB_ENV
            cd ..
            rm -rf rust.git
            if ! cargo build-dev ; then
              echo "next_step=create_issue" >> $GITHUB_ENV
            else
              if ! ./scripts/kani-regression.sh ; then
                echo "next_step=create_issue" >> $GITHUB_ENV
              fi
            fi
          else
            echo "next_step=none" >> $GITHUB_ENV
          fi
      - name: Create Pull Request
        if: ${{ env.next_step == 'create_pr' }}
        uses: peter-evans/create-pull-request@v5
        with:
          commit-message: Upgrade Rust toolchain to nightly-${{ env.next_toolchain_date }}
          branch: toolchain-${{ env.next_toolchain_date }}
          delete-branch: true
          title: 'Automatic toolchain upgrade to nightly-${{ env.next_toolchain_date }}'
          body: >
            Update Rust toolchain from nightly-${{ env.current_toolchain_date }} to
            nightly-${{ env.next_toolchain_date }} without any other source changes.

            This is an automatically generated pull request. If any of the CI checks fail,
            manual intervention is required. In such a case, review the changes at
            https://github.com/rust-lang/rust from
            https://github.com/rust-lang/rust/commit/${{ env.current_toolchain_hash }} up to
            https://github.com/rust-lang/rust/commit/${{ env.next_toolchain_hash }}. The log
            for this commit range is:

            ${{ env.git_log }}
      - name: Create Issue
        if: ${{ env.next_step == 'create_issue' }}
        uses: dacbd/create-issue-action@main
        with:
          token: ${{ github.token }}
          title: 'Toolchain upgrade to nightly-${{ env.next_toolchain_date }} failed'
          body: >
            Updating Rust toolchain from nightly-${{ env.current_toolchain_date }} to
            nightly-${{ env.next_toolchain_date }} requires source changes.

            The failed automated run
            [can be found here.](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})

            Please review the changes at
            https://github.com/rust-lang/rust from
            https://github.com/rust-lang/rust/commit/${{ env.current_toolchain_hash }} up to
            https://github.com/rust-lang/rust/commit/${{ env.next_toolchain_hash }}. The log
            for this commit range is:

            ${{ env.git_log }}