fix workflow again

Author: sigaloid

.github/workflows/main-rust.yml

@@ -30,6 +30,9 @@ jobs:
         with:
           toolchain: stable
 
+      - name: Install musl-gcc
+        run: sudo apt-get install musl-tools
+
       - name: Install cargo musl target
         run: rustup target add x86_64-unknown-linux-musl