From bf2c4a29d08423f7b1c28877aef3b386917f0a13 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Thu, 19 Jan 2023 13:37:00 -0800
Subject: [PATCH] Enable Cargo nightly sparse-registry feature

---
 action.yml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/action.yml b/action.yml
index d292238..5a671c2 100644
--- a/action.yml
+++ b/action.yml
@@ -90,5 +90,10 @@ runs:
         echo CARGO_TERM_COLOR=always >> $GITHUB_ENV
       shell: bash
 
+    - run: |
+        : enable Cargo sparse registry
+        echo CARGO_UNSTABLE_SPARSE_REGISTRY=true >> $GITHUB_ENV
+      shell: bash
+
     - run: rustc +${{steps.parse.outputs.toolchain}} --version --verbose
       shell: bash