use nextest image

.gitea/workflows/backend.yaml

@@ -4,7 +4,7 @@ on: [push]
 
 jobs:
   check:
-    runs-on: rust-latest
+    runs-on: rust-nextest
     defaults:
       run:
         working-directory: ./backend
@@ -23,7 +23,7 @@ jobs:
 
 
   build:
-    runs-on: rust-latest
+    runs-on: rust-nextest
     defaults:
       run:
         working-directory: ./backend
@@ -41,7 +41,7 @@ jobs:
         run: cargo build --release --locked
 
   test:
-    runs-on: rust-latest
+    runs-on: rust-nextest
     defaults:
       run:
         working-directory: ./backend
@@ -55,8 +55,6 @@ jobs:
             ~/.cargo/git
             backend/target
           key: ${{ runner.os }}-cargo-test-${{ hashFiles('backend/Cargo.lock') }}
-      - name: Install Nextest
-        run: cargo install --version '^0.9' cargo-nextest
       - name: Build Binary with Shutdown
         run: cargo build --features shutdown --bin nuchat
       - name: Run Tests