nightly -> MSRV, add build step before tests

.github/workflows/basic.yml

@@ -12,18 +12,27 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@v2
 
-      - name: Install latest nightly toolchain
+      - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: 1.65.0
           target: wasm32-unknown-unknown
           override: true
 
+      - name: Run build
+        uses: actions-rs/cargo@v1
+        with:
+          toolchain: 1.65.0
+          command: build
+          args: --workspace
+        env:
+          RUST_BACKTRACE: 1
+
       - name: Run tests
         uses: actions-rs/cargo@v1
         with:
-          toolchain: nightly
+          toolchain: 1.65.0
           command: test
           args: --workspace
         env:
@@ -32,7 +41,7 @@ jobs:
       - name: Compile WASM contract
         uses: actions-rs/cargo@v1
         with:
-          toolchain: nightly
+          toolchain: 1.65.0
           command: wasm
         env:
           RUSTFLAGS: "-C link-arg=-s"
@@ -44,24 +53,24 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@v2
 
-      - name: Install stable toolchain
+      - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly
+          toolchain: 1.65.0
           override: true
           components: rustfmt, clippy
 
       - name: Run cargo fmt
         uses: actions-rs/cargo@v1
         with:
-          toolchain: nightly
+          toolchain: 1.65.0
           command: fmt
           args: --all -- --check
 
       - name: Run cargo clippy
         uses: actions-rs/cargo@v1
         with:
-          toolchain: nightly
+          toolchain: 1.65.0
           command: clippy
           args: --all-targets -- -D warnings