Use working_directory to set clippy dirs

Author: webmaster128

Diff for: .circleci/config.yml

@@ -234,13 +234,16 @@ jobs:
           command: rustup component add clippy
       - run:
           name: Clippy linting on std
-          command: cd lib/std && cargo clippy -- -D warnings
+          working_directory: ~/project/lib/std
+          command: cargo clippy -- -D warnings
       - run:
           name: Clippy linting on vm (use flags for Rust stable support)
-          command: cd lib/vm && cargo clippy --no-default-features --features default-cranelift
+          working_directory: ~/project/lib/vm
+          command: cargo clippy --no-default-features --features default-cranelift
       - run:
           name: Clippy linting on hackatom
-          command: cd contracts/hackatom && cargo clippy -- -D warnings
+          working_directory: ~/project/contracts/hackatom
+          command: cargo clippy -- -D warnings
       - save_cache:
           paths:
             - /usr/local/cargo/registry