Fix clippy

Author: chriseth

backend/src/lib.rs

@@ -7,7 +7,21 @@ mod plonky3;
 #[cfg(feature = "stwo")]
 mod stwo;
 
+#[cfg(any(
+    feature = "halo2",
+    feature = "estark-polygon",
+    feature = "estark-starky",
+    feature = "plonky3",
+    feature = "stwo"
+))]
 mod composite;
+#[cfg(any(
+    feature = "halo2",
+    feature = "estark-polygon",
+    feature = "estark-starky",
+    feature = "plonky3",
+    feature = "stwo"
+))]
 mod field_filter;
 mod mock;
 

pipeline/src/test_util.rs

@@ -113,6 +113,7 @@ pub fn asm_string_to_pil<T: FieldElement>(contents: &str) -> Analyzed<T> {
         .clone()
 }
 
+#[cfg(any(feature = "estark-starky", feature = "halo2", feature = "plonky3"))]
 fn should_generate_proofs() -> bool {
     match env::var("POWDR_GENERATE_PROOFS") {
         Ok(value) => match value.as_str() {