Revert "Test workspace at once"

This reverts commit e355652.

Author: camsteffen

.github/workflows/clippy.yml

@@ -53,8 +53,16 @@ jobs:
     - name: Test "--fix -Zunstable-options"
       run: cargo run --features deny-warnings,internal-lints --bin cargo-clippy -- clippy --fix -Zunstable-options
 
-    - name: Test Workspace
-      run: cargo test --all --features deny-warnings,internal-lints
+    - name: Test
+      run: cargo test --features deny-warnings,internal-lints
+
+    - name: Test clippy_lints
+      run: cargo test --features deny-warnings,internal-lints
+      working-directory: clippy_lints
+
+    - name: Test rustc_tools_util
+      run: cargo test --features deny-warnings
+      working-directory: rustc_tools_util
 
     - name: Test clippy_dev
       run: cargo test --features deny-warnings

.github/workflows/clippy_bors.yml

@@ -112,8 +112,16 @@ jobs:
     - name: Build
       run: cargo build --features deny-warnings,internal-lints
 
-    - name: Test Workspace
-      run: cargo test --all --features deny-warnings,internal-lints
+    - name: Test
+      run: cargo test --features deny-warnings,internal-lints
+
+    - name: Test clippy_lints
+      run: cargo test --features deny-warnings,internal-lints
+      working-directory: clippy_lints
+
+    - name: Test rustc_tools_util
+      run: cargo test --features deny-warnings
+      working-directory: rustc_tools_util
 
     - name: Test clippy_dev
       run: cargo test --features deny-warnings