From dddc7287f5552732fe3b16f8d11b42e5493d369a Mon Sep 17 00:00:00 2001
From: Eugene Lozovoy <uzix.ls@gmail.com>
Date: Tue, 28 May 2024 17:11:09 +0300
Subject: [PATCH] 1716905469

---
 action.yml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/action.yml b/action.yml
index 2380a05..aa618b2 100644
--- a/action.yml
+++ b/action.yml
@@ -158,3 +158,21 @@ runs:
         DATE=$(rustc --version --verbose | sed -ne 's/^commit-date: \(20[0-9][0-9]\)-\([01][0-9]\)-\([0-3][0-9]\)$/\1\2\3/p')
         HASH=$(rustc --version --verbose | sed -ne 's/^commit-hash: //p')
         echo "cachekey=$(echo $DATE$HASH | head -c12)" >> $GITHUB_OUTPUT
+
+    - name: Downgrade registry access protocol when needed
+      shell: bash
+      run: |
+        # Not all versions support setting CARGO_REGISTRIES_CRATES_IO_PROTOCOL
+        # On versions 1.66, 1.67, and 1.68.0-nightly the value "sparse" is still unstable.
+        # https://github.com/dtolnay/rust-toolchain/pull/69#discussion_r1107268108
+        # If we detect an incompatible value, set it to "git" which is always supported.
+        if [[ "${{steps.versions.outputs.rustc-version}}" =~ ^rustc\ (1\.6[67]\.|1\.68\.0-nightly) && "${CARGO_REGISTRIES_CRATES_IO_PROTOCOL}" == "sparse" ]]; then
+          echo "Downgrade cargo registry protocol to git"
+          echo "CARGO_REGISTRIES_CRATES_IO_PROTOCOL=git" >> $GITHUB_ENV
+        fi
+
+    - name: Setup Rust Caching
+      if: inputs.cache == 'true'
+      uses: Swatinem/rust-cache@v2
+      with:
+        workspaces: ${{inputs.cache-workspaces}}