ci: edit cron-update-rust

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

@@ -1,7 +1,7 @@
 name: Update stable rustc
 on:
   schedule:
-    - cron: "0 0 * * 6" # runs every Saturday 00:00
+    - cron: "0 0 1,15 * *" # At 00:00 on day-of-month 1 and 15.
   workflow_dispatch: # allows manual triggering
 jobs:
   format:
@@ -14,10 +14,10 @@ jobs:
         run: |
           set -x
           # Extract the date from whatever version of the compiler dtolnay/rust-toolchain gives us.
-          RUSTC_VERSION=$(rustc --verbose --version | sed -ne 's/^release: //p')
+          RUST_VERSION=$(rustc --verbose --version | sed -ne 's/^release: //p')
           # Update the version in the reference file.
-          echo "${RUSTC_VERSION}" > rustc-version
-          echo "rustc_version=${RUSTC_VERSION}" >> $GITHUB_ENV
+          echo "${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."
@@ -33,8 +33,8 @@ jobs:
           token: ${{ secrets.CREATE_PR_TOKEN }}
           author: Update Rustc Bot <bot@example.com>
           committer: Update Rustc Bot <bot@example.com>
-          title: Automated weekly update to rustc (to ${{ env.rustc_version }})
+          title: Automated weekly update to rustc (to ${{ env.rust_version }})
           body: |
            Automated update to Github CI workflow `rust.yml` by [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action
-          commit-message: Automated update to Github CI to rustc ${{ env.rustc_version }}
+          commit-message: Automated update to Github CI to rustc ${{ env.rust_version }}
           branch: create-pull-request/weekly-stable-update

.github/workflows/rust.yml

@@ -13,13 +13,13 @@ jobs:
   Prepare:
     runs-on: ubuntu-latest
     outputs:
-      rustc_version: ${{ steps.read_toolchain.outputs.rustc_version }}
+      rust_version: ${{ steps.read_toolchain.outputs.rust_version }}
     steps:
       - name: "Checkout repo"
         uses: actions/checkout@v4
       - name: "Read rustc version"
         id: read_toolchain
-        run: echo "rustc_version=$(cat rustc-version)" >> $GITHUB_OUTPUT
+        run: echo "rust_version=$(cat rust-version)" >> $GITHUB_OUTPUT
 
   Check:
     runs-on: ubuntu-latest
@@ -40,7 +40,7 @@ jobs:
     - name: "Select toolchain"
       uses: dtolnay/rust-toolchain@v1
       with:
-        toolchain: ${{ needs.Prepare.outputs.rustc_version }}
+        toolchain: ${{ needs.Prepare.outputs.rust_version }}
     - name: "Install clippy"
       run: rustup component add clippy
     - name: "Lint"