Fix Rust CI cache reuse

.cargo/config.toml

@@ -1,7 +1,7 @@
 # for Linux
 [target.x86_64-unknown-linux-gnu]
 linker = "clang"
-rustflags = ["-C", "link-arg=-fuse-ld=/usr/bin/mold", "-Zshare-generics=y", ]
+rustflags = ["-C", "link-arg=-fuse-ld=/usr/bin/mold", "-Zshare-generics=y", "-D", "warnings", ]
 
 [unstable]
 codegen-backend = true
@@ -10,4 +10,4 @@ codegen-backend = true
 codegen-backend = "llvm"
 
 [profile.dev.package."*"]
-codegen-backend = "llvm"
+codegen-backend = "llvm"

.gitea/workflows/ci.yml

@@ -25,6 +25,7 @@ jobs:
       - name: Cache Rust dependencies and build artifacts
         uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
         with:
+          prefix-key: v1-rust
           shared-key: linux-nightly
           cache-bin: false
 
@@ -45,7 +46,7 @@ jobs:
             pkg-config
 
       - name: Build
-        run: RUSTFLAGS="-D warnings" cargo build --locked -j 4
+        run: cargo build --locked -j 4
 
       - name: Run unit tests
         run: cargo test --locked --lib -j 4