解决设置rust workspace带来的“工具链不一致”的问题 (#345)

更改workflow

user/libs/Makefile

@@ -16,4 +16,9 @@ clean:
 		echo "Clean in dir: $$subdir";\
 		cd $$subdir && $(MAKE) clean;\
 		cd .. ;\
-	done
+	done
+
+.PHONY: clean
+fmt:
+	@echo "格式化代码: user/libs"
+	FMT_CHECK=$(FMT_CHECK) $(MAKE) -C libc fmt

user/libs/libc/Makefile

@@ -4,4 +4,8 @@ all:
 
 clean:
 	rm -f Cargo.lock
-	$(MAKE) -C src clean
+	$(MAKE) -C src clean
+
+.PHONY: fmt
+fmt:
+	cargo fmt --all $(FMT_CHECK)