Try to speed up builds.

.forgejo/workflows/ci.yml

@@ -6,6 +6,12 @@ on:
   pull_request:
     branches: [ main ]
 
+env:
+  # Should speed up builds.
+  CARGO_INCREMENTAL: 0
+  # Should reduce the size of ./target to improve cache load/store.
+  CARGO_PROFILE_TEST_DEBUG: 0
+
 jobs:
   check-backend:
     name: Backend
@@ -33,19 +39,19 @@ jobs:
       run: |
         # hurl needs libxml needs libclang
         apt update && apt install -y clang
-        cargo build --tests
+        cargo build --tests --locked
       working-directory: backend
     - name: "Lint"
       run: |
         rustup component add clippy
-        cargo clippy
+        cargo clippy --locked
       working-directory: backend
     - name: "Unit Tests"
       run: |
-        cargo test -- --skip api
+        cargo test --locked -- --skip api
       working-directory: backend
     - name: "Integration Tests"
-      run: cargo test --test api
+      run: cargo test --locked --test api
       working-directory: backend
 
   check-frontend: