Tiny cleanup

src/field/extension_field/quartic.rs

@@ -247,7 +247,7 @@ impl DivAssign for QuarticCrandallField {
 #[cfg(test)]
 mod tests {
     use crate::field::extension_field::quartic::QuarticCrandallField;
-    use crate::field::extension_field::{FieldExtension, Frobenius, OEF};
+    use crate::field::extension_field::{FieldExtension, Frobenius};
     use crate::field::field::Field;
 
     fn exp_naive<F: Field>(x: F, power: u128) -> F {

src/gadgets/arithmetic_extension.rs

@@ -1,5 +1,4 @@
-use std::convert::{TryFrom, TryInto};
-use std::ops::Range;
+use std::convert::TryInto;
 
 use itertools::Itertools;
 use num::Integer;
@@ -7,7 +6,6 @@ use num::Integer;
 use crate::circuit_builder::CircuitBuilder;
 use crate::field::extension_field::target::{ExtensionAlgebraTarget, ExtensionTarget};
 use crate::field::extension_field::{Extendable, OEF};
-use crate::field::field::Field;
 use crate::gates::arithmetic::ArithmeticExtensionGate;
 use crate::generator::SimpleGenerator;
 use crate::target::Target;

src/gadgets/rotate.rs

@@ -158,9 +158,10 @@ mod tests {
     }
 
     #[test]
-    fn test_rotate() {
+    fn test_rotate() -> Result<()> {
         for len in 1..5 {
-            test_rotate_given_len(len);
+            test_rotate_given_len(len)?;
         }
+        Ok(())
     }
 }

src/gates/gate_testing.rs

@@ -1,6 +1,6 @@
 use crate::field::extension_field::Extendable;
 use crate::field::field::Field;
-use crate::gates::gate::{Gate, GateRef};
+use crate::gates::gate::GateRef;
 use crate::polynomial::polynomial::{PolynomialCoeffs, PolynomialValues};
 use crate::util::{log2_ceil, transpose};
 use crate::vars::EvaluationVars;

src/gates/gmimc.rs

@@ -421,7 +421,7 @@ mod tests {
             local_wires: &wires,
         };
 
-        let ev = gate.0.eval_unfiltered((vars));
+        let ev = gate.0.eval_unfiltered(vars);
 
         let wires_t = builder.add_virtual_extension_targets(Gate::end());
         for i in 0..Gate::end() {