Do not run cargo test for xtask

Author: qryxip

.github/workflows/ci.yml

@@ -92,7 +92,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --workspace --no-fail-fast
+          args: --no-fail-fast
         env:
           RUST_BACKTRACE: full