Update CI to new paths

.github/workflows/validation-rust.yaml

@@ -28,7 +28,7 @@ jobs:
         with:
           components: clippy
       - uses: Swatinem/rust-cache@v2
-      - run: cargo clippy --manifest-path rust/Cargo.toml -- -D warnings
+      - run: cargo clippy -- -D warnings
 
   test:
     strategy:
@@ -50,7 +50,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: dtolnay/rust-toolchain@nightly
       - uses: Swatinem/rust-cache@v2
-      - run: cargo test --manifest-path rust/Cargo.toml
+      - run: cargo test
 
   mtr:
     name: Run mtr integration tests
@@ -121,7 +121,7 @@ jobs:
         with:
           components: rustfmt
       - uses: Swatinem/rust-cache@v2
-      - run: cargo fmt --manifest-path rust/Cargo.toml --all -- --check
+      - run: cargo fmt --all -- --check
 
   audit:
     name: Audit dependencies for security & license compatibility
@@ -134,8 +134,6 @@ jobs:
         run: cd rust/ && cargo audit
       - name: Audit dependency licenses with cargo-deny
         uses: EmbarkStudios/cargo-deny-action@v1
-        with:
-          arguments: --manifest-path rust/Cargo.toml
 
     #   uses: rustsec/[email protected]
     #   with:
@@ -151,7 +149,7 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       # test docs for everything
       - name: Test build all docs
-        run: cargo doc --manifest-path rust/Cargo.toml --no-deps
+        run: cargo doc --no-deps
       # create docs for the crate we care about
       - name: Build docs for publish
         run: |