CI: enforce format with cargo fmt (#6)

* CI: enforce format with `cargo fmt`

* apply cargo fmt

.github/workflows/ci.yml

@@ -45,6 +45,9 @@ jobs:
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
           restore-keys: ${{ runner.os }}-cargo-
 
+      - name: Cargo fmt
+        run: cargo fmt --check
+
       - name: Get Stone submodule version
         id: get-stone-version
         run: |

src/cairo_vm.rs

@@ -131,7 +131,7 @@ pub fn make_bootloader_tasks(
         pie.map(|pie| TaskSpec {
             task: Task::Pie(pie),
         })
-            .map_err(BootloaderTaskError::Pie)
+        .map_err(BootloaderTaskError::Pie)
     });
 
     program_tasks.chain(cairo_pie_tasks).collect()

src/error.rs

@@ -16,4 +16,4 @@ pub enum VerifierError {
     IoError(#[from] std::io::Error),
     #[error("verifier run failed")]
     CommandError(std::process::Output),
-}
+}