From 75e29c1781518c23353770b22f439f2b51a6d340 Mon Sep 17 00:00:00 2001
From: Brandon Cheng <gluxon@users.noreply.github.com>
Date: Sat, 14 May 2022 17:31:15 -0400
Subject: [PATCH] Add matrix.os to Swatinem/rust-cache key to fix test job

---
 .github/workflows/primary.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.github/workflows/primary.yml b/.github/workflows/primary.yml
index 0f28ac9..b156cec 100644
--- a/.github/workflows/primary.yml
+++ b/.github/workflows/primary.yml
@@ -42,6 +42,12 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: Swatinem/rust-cache@v1
+        with:
+          # A rough approximation of the current operating system version is needed on the
+          # rust-cache key. This fixes a problem with the grcov command throwing "version
+          # `GLIBC_2.32' not found" before this fix. It's likely a grcov binary dynamically linked
+          # with a different Ubuntu version was getting restored.
+          key: ${{ matrix.os }}
       - name: Install llvm-tools-preview
         uses: actions-rs/toolchain@v1
         with: