Downgrade once_cell for MSRV jobs

Author: djc

.github/workflows/ci.yml

@@ -28,6 +28,9 @@ jobs:
           override: true
       - name: Checkout
         uses: actions/checkout@v3
+      - name: MSRV dependencies
+        if: matrix.rust == '1.66.0'
+        run: make msrv-lock
       - name: Check
         env:
           CARGO_BUILD_TARGET: ${{ matrix.target }}
@@ -76,7 +79,8 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install gcc-multilib
-      - name: Copy MSRV Lock
+      - name: MSRV dependencies
+        if: matrix.rust == '1.66.0'
         run: make msrv-lock
       - name: Test
         env:

Makefile

@@ -33,4 +33,7 @@ lint:
 	@rustup component add clippy 2> /dev/null
 	@cargo clippy --examples --tests --all-features -- --deny warnings
 
+msrv-lock:
+	@cargo update -p once_cell --precise 1.20.3
+
 .PHONY: all doc build check test format format-check lint check-minver msrv-lock